WO2013180376A1 - New electron transport material and organic electroluminescent device using the same - Google Patents

New electron transport material and organic electroluminescent device using the same Download PDF

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WO2013180376A1
WO2013180376A1 PCT/KR2013/001371 KR2013001371W WO2013180376A1 WO 2013180376 A1 WO2013180376 A1 WO 2013180376A1 KR 2013001371 W KR2013001371 W KR 2013001371W WO 2013180376 A1 WO2013180376 A1 WO 2013180376A1
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alkyl
compound
aryl
heteroaryl
electron transport
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PCT/KR2013/001371
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French (fr)
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Hyun Goog Nam
Dae Won Lim
Jae Yong Kim
Sang Mi Park
Seung Hee Jang
Sang Youn Lee
Ju Seok Ham
Kyu Oh Cho
Hyun Don Kim
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Alpha Chem Co., Ltd.
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Priority claimed from KR1020120120910A external-priority patent/KR101474713B1/en
Application filed by Alpha Chem Co., Ltd. filed Critical Alpha Chem Co., Ltd.
Publication of WO2013180376A1 publication Critical patent/WO2013180376A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/70—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/70—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
    • C07D239/72—Quinazolines; Hydrogenated quinazolines
    • C07D239/74—Quinazolines; Hydrogenated quinazolines with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, attached to ring carbon atoms of the hetero ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/10—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
    • C07D413/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
    • C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
    • C07D513/04—Ortho-condensed systems
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14—Carrier transporting layers
    • H10K50/16—Electron transporting layers

Definitions

  • the following disclosure relates to a new electron transport material and an organic electroluminescent device using the same.
  • An organic electroluminescent device is a device emitting light while electrons and holes disappear after being coupled in pairs when an electron charge is injected into an organic film formed between an electron injection electrode (cathode) and a hole injection electrode (anode).
  • the organic electroluminescent device has advantages in that the device may be formed on a flexible transparent substrate made of, for example, plastic material, driven at a low voltage (10V or less) as compared with a plasma display panel or an inorganic electroluminescent (EL) display, has relatively low power consumption and excellent color sensation.
  • the organic electroluminescent device has a structure consisting of a substrate, an anode, a hole injection layer receiving a hole from the anode, a hole transport layer transporting the hole, a luminescent layer emitting light while the hole and an electron are bonded, an electron transport layer receiving the electrode from a cathode to transport the electron to the luminescent layer, and the cathode.
  • the luminescent layer may be configured by applying a small amount of a fluorescent or phosphorescent dye to the electron transport layer or the hole transport layer without a separate luminescent layer.
  • one polymer may entirely serve as the hole transport layer, the luminescent layer, and the electron transport layer.
  • Organic thin film layers between two electrodes may be formed by a method such as a vacuum deposition method, a spin coating method, an inkjet printing method, a roll coating method, or the like, and for effective injection of the electron from the cathode, a separate electron injection layer may be inserted.
  • the hole and the electron may be effectively transported to the luminescent layer.
  • the organic electroluminescent device is manufactured to have a multi-layer thin film structure.
  • TPBI which was reported by Kodak in 1996 disclosed in US Patent No. 5,645,948, (See the following structure), is known to be a representative material for electron transport layer having an imidazole group.
  • This material contains three N-phenyl benzimidazole groups at 1, 3, and 5 substitution positions of benzene, and has a function of blocking holes from a luminescent layer as well as transporting electrons.
  • stability of TPBI is too low to be actually used in the device.
  • the material may slightly improve only a driving voltage, or there are problems such as significant deterioration of a device driving lifespan or negative properties such as variation in the device lifespan according to the color, and deterioration of thermal stability, or the like.
  • a fluorescent material was used in the organic electroluminescent device according to the related art, but gradually, phosphorescent material has been mainly used in the organic electroluminescent device. Therefore, in the electron transport material, which is a common material of the organic electroluminescent device, electron mobility appropriate for the phosphorescent material, low driving voltage, and a hole blocking property have been required.
  • An embodiment of the present invention is directed to providing a new electron transport material capable of significantly improving luminescence efficiency, stability and a lifespan of a device.
  • an embodiment of the present invention is directed to providing an organic electroluminescent device capable of having an excellent luminescence property by using the new electron transport material and decreasing consumption power by decreasing driving voltage to induce increase in power efficiency.
  • an electron transport material represented by the following Chemical Formula 1 represented by the following Chemical Formula 1, and an organic electroluminescent device containing the same.
  • the electron transport material according to the present invention is used, such that excellent luminescence property may be obtained, and an increase in power efficiency is induced by decreasing driving voltage, such that the organic electroluminescent device using less consumption power may be manufactured.
  • A, B, C, and D each are independently C-(L 1 ) m -Ar 1 or N, but two of A, B, C, and D are N, the other two are C-(L 1 ) m -Ar 1 , and each of -(L 1 ) m -Ar 1 may be the same as or different from each other, but two -(L 1 ) m -Ar 1 are not hydrogen at the same time;
  • L is (C1-C20)alkylene or (C2-C20)alkenylene
  • R 1 to R 4 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
  • L 1 (s) each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
  • n is an integer of 1 to 3, and in the case in which m is an integer of 2 or more, L 1 (s) each are the same as or different from each other;
  • Ar 1 (s) each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
  • alkyl, cycloalkyl, aryl, heteroaryl of R 1 to R 4 , alkylene or alkenylene of L, arylene and heteroarylene of L 1 , and aryl and heteroaryl of Ar 1 may be substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)
  • alkyl alkoxy and other substituents including an “alkyl” part described in the present invention include both of the straight chain type and the branched chain type, and the term “cycloalkyl” includes polycyclic hydrocarbon such as substituted or unsubstituted adamantyl or substituted or unsubstituted (C7-C30)bicycloalkyl as well as monocyclic ring system.
  • aryl which is an organic radical derived from aromatic hydrocarbon by the removal of one hydrogen atom, may include a single ring or a fused ring containing, preferably 4 to 7 ring atoms, and more preferably 5 or 6 ring atoms, and include rings in which two or more aryl groups are combined through a single bond(s).
  • aryl include phenyl, naphthyl, biphenyl, terphenyl, anthryl, indenyl, fluorenyl, phenanthryl, triphenylenyl, pyrenyl, perylenyl, chrysenyl, naphtacenyl, fluoranthenyl, and the like.
  • the heteroaryl may be a 5- or 6-membered monocyclic heteroaryl or a polycyclic heteroaryl which is fused with one or more benzene ring(s), and may be partially saturated.
  • the “heteroaryl”in the present invention may include the structures having one or more heteroaryl group(s) bonded through a single bond.
  • the heteroaryl groups may include divalent aryl groups of which the heteroatoms are oxidized or quarternized, for example, to form N-oxides, quaternary salts, or the like.
  • Specific examples of the heteroaryl group include monocyclic heteroaryl groups such as furyl, thiophenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, triazinyl, tetrazinyl, triazolyl, tetrazolyl, furazanyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, or the like; polycyclic heteroaryl groups such as benzofuranyl, benzothiophenyl, isobenzofuranyl, benzimidazolyl, benzothiazolyl,
  • ‘(C1-C30)alkyl’described herein may be preferably (C1-C20)alkyl, more preferably, (C1-C10)alkyl
  • ‘(C6-C30)aryl’described herein may be preferably (C6-C20)aryl.
  • ‘(C3-C30)heteroaryl’ may be preferably (C3-C20)heteroaryl.
  • ‘(C3-C30)cycloalkyl’ may be preferably (C3-C20)cycloalkyl, more preferably (C3-C7)cycloalkyl.
  • the electron transport material according to the present invention may be represented by the following Chemical Formula 2 or 3.
  • R 1 to R 4 and L each has the same definition in Chemical Formula 1;
  • L 2 and L 3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
  • x and y each are independently an integer of 1 to 3, wherein when x is an integer of 2 or more, L 2 (s) are the same as or different from each other, and when y is an integer of 2 or more, L 3 (s) are the same as or different from each other;
  • Ar 2 and Ar 3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
  • Arylene and heteroarylene of L 2 and L 3 , and aryl and heteroaryl of Ar 2 and Ar 3 may be substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)aryl, mono or di(C1-C30)alkylamino, mono or di(C6-C30)aryla
  • the electron transport material according to the present invention may be represented by the following Chemical Formulas 4 to 9.
  • R 1 to R 6 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
  • L 2 and L 3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
  • x is an integer of 1 to 3, and when x is an integer of 2 or more, L 1 (s) each are the same as or different from each other,
  • Ar 2 and Ar 3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl; and arylene of L 2 and L 3 and aryl and heteroaryl of Ar 2 and Ar 3 may be further substituted with at least one selected from a group consisting of (C1-C30)alkyl, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, and (C3-C30)heteroaryl.]
  • L 2 and L 3 each are a single bond, phenylene, biphenylene, 9,9-dimethylfluorenylene, naphthylene, anthrylene, pyridinylene, or pyrimidinylene;
  • Ar 2 and Ar 3 each are independently hydrogen, (C1-C30)alkyl, or selected from the following structure;
  • R', R'', and R'' each may be independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, or (C1-C30)alkyl(C6-C30)aryl.
  • the electron transport material may be, for example, the following compounds, but is not limited thereto.
  • a process of preparing an electron transport material of Chemical Formula 2 when x and y are 1 is represented by the following Reaction Formula 1
  • a process of preparing an electron transport material of Chemical Formula 2 in the case in which x is 3 and y is 1 is represented by the following Reaction Formulas 2 to 4.
  • the electron transport material is not limited thereto, but may be prepared by an organic reaction known in the art.
  • R 1 to R 4 , L, L 2 , L 3 , Ar 2 , and Ar 3 each has the same definition in Chemical Formula 2, X 1 and X 2 are halogen or but are not equal to each other.]
  • an organic electroluminescent device including a first electrode; a second electrode; and at least one organic layer interposed between the first and second electrodes, wherein the organic layer includes an electron transport layer containing an electron transport material of Chemical Formula 1.
  • driving voltage may be decreased, such that an increase in power efficiency may be induced, thereby decreasing consumption power.
  • the organic layer may include at least one electron transport layer in which the electron transport material of Chemical Formula 1 is contained and at least one luminescent layer configured of a fluorescent host and a fluorescent dopant or a phosphorescent host and a phosphorescent dopant, wherein the fluorescent host, the fluorescent dopant, the phosphorescent host, or the phosphorescent dopant are not particularly limited.
  • the electron transport material according to the present invention may have the excellent luminescence property and decrease the driving voltage to increase the power efficiency, such that the organic electroluminescent device using less consumption power may be manufactured.
  • FIG. 1 is a graph showing efficiency (cd/A) and luminance (cd/m 2 ) of organic electroluminescent devices manufactured in Examples 7 to 12 and Comparative Example 1.
  • FIG. 2 is a graph showing efficiency (cd/A) and luminance (cd/m 2 ) of organic electroluminescent devices manufactured in Examples 22 to 30 and Comparative Example 1
  • N1-phenylbenzene-1,2-diamine (48g, 260mmol) was completely dissolved in N,N-Dimethyl acetamide (DMAC, 100mL) at 0°C, and then 4-bromobenzoyl chloride (63g, 287mmol) was dropped thereinto and stirred. After 2 hours 30 minutes, pyridine (60mL) and water (100mL) were added thereto. After stirring the mixture for 30 minutes, the prepared solid was filtered while being washed with methanol, thereby obtaining Compound F-1 (95g, 95%) as a white solid.
  • DMAC N,N-Dimethyl acetamide
  • 1,4-dibromonaphthalene 25g, 87.4mmol
  • bis(pinacolato)diboron 46.62g, 184mmol
  • 1,4-dioxane 300mL
  • 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.71g, 0.9mmol)
  • potassium acetate 17.16g, 174.8mmol
  • 1,3-dibromothiophene (10g, 41.3mmol), Compound J (Preparation Example 10, 39.2g, 82.7mmol), THF (200mL), Pd(PPh 3 ) 4 (1.91g, 1.65mmol), K 2 CO 3 (68.6g, 496mmol), and distilled water (100mL) were mixed and stirred under reflux for 18 hours.
  • the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol, thereby obtaining Compound 120 (22g, 68.5%).
  • a glass substrate (25mm x 25mm x 0.7mm) having an indium tin oxide (ITO) transparent electrode line having a thickness of 150nm was subjected to ultrasonic cleaning for 10 minutes in distilled water in which a detergent was dissolved and then cleaned with distilled water again for 10 minutes. After washing with distilled water, the substrate was subjected to ultrasonic cleaning with solvents in a sequence of isopropyl alcohol, acetone, and methanol for 10 minutes, respectively, and dried. Thereafter, the substrate was dry cleaned using oxygen/argon plasma, then the glass substrate having the transparent electrode line was mounted on a substrate holder of a vacuum vapor deposition apparatus.
  • ITO indium tin oxide
  • a film having a thickness of 60nm was formed on a surface on which the transparent electrode line was formed as a hole injection layer using IDE-406 (the following structure, Idemitsu) so as to cover the transparent electrode.
  • IDE-406 the following structure, Idemitsu
  • a film having a thickness of 30nm was formed on the IDE-406 film as a hole transport layer using H-1 (tetrakis-N-biphenyl-4-yl-benzidine, hereinafter, referred to as the H-1 film ).
  • BD-1 having the following structure and ⁇ -ADN(9,10-di(naphthalene-2-yl)anthracene) were deposited on the H-1 film as a dopant and a luminescent host at a weight ratio of 5%, to thereby form a film having a thickness of 20nm as a luminescent layer.
  • a film having a thickness of 20nm was formed on the luminescent layer as an electron transport layer by depositing Compound 100 according to the present invention. Subsequently, lithium quinolate (Liq) was deposited thereon to form an electron injection layer. Metal aluminum was deposited on this Liq film to form a metal cathode, thereby manufacturing the organic electroluminescent device.
  • Liq lithium quinolate
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 98 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 105 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 106 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 113 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 110 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 114 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 115 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 116 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 117 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 118 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 119 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 120 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 121 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 123 was used as an electron transport material instead of Compound 100 in Example 16.
  • An organic electroluminescent device was manufactured by the same process in Example 7 except that Compound ETM-1 having the following structure was used as an electron transport material instead of Compound 100 in Example 7.
  • the material according to the present invention had excellent luminescence properties as compared with the material according to the related art.
  • the organic electroluminescent device using the heteroaromatic cyclic compound according to the present invention as the electron transport layer had an excellent luminescence property and decreased driving current to increase the power efficiency, thereby using less consumption power.

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Abstract

Provided are a new electron transport material and an organic electroluminescent device including the same. The electron transport material according to the present invention may have the excellent luminescence property and reduce the driving voltage to increase the power efficiency, such that the organic electroluminescent device using less consumption power may be manufactured.

Description

NEW ELECTRON TRANSPORT MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
The following disclosure relates to a new electron transport material and an organic electroluminescent device using the same.
An organic electroluminescent device is a device emitting light while electrons and holes disappear after being coupled in pairs when an electron charge is injected into an organic film formed between an electron injection electrode (cathode) and a hole injection electrode (anode). The organic electroluminescent device has advantages in that the device may be formed on a flexible transparent substrate made of, for example, plastic material, driven at a low voltage (10V or less) as compared with a plasma display panel or an inorganic electroluminescent (EL) display, has relatively low power consumption and excellent color sensation.
Generally, the organic electroluminescent device has a structure consisting of a substrate, an anode, a hole injection layer receiving a hole from the anode, a hole transport layer transporting the hole, a luminescent layer emitting light while the hole and an electron are bonded, an electron transport layer receiving the electrode from a cathode to transport the electron to the luminescent layer, and the cathode. In some cases, the luminescent layer may be configured by applying a small amount of a fluorescent or phosphorescent dye to the electron transport layer or the hole transport layer without a separate luminescent layer. In the case of using a polymer, generally, one polymer may entirely serve as the hole transport layer, the luminescent layer, and the electron transport layer. Organic thin film layers between two electrodes may be formed by a method such as a vacuum deposition method, a spin coating method, an inkjet printing method, a roll coating method, or the like, and for effective injection of the electron from the cathode, a separate electron injection layer may be inserted.
In the case in which an interface between the electrode and an organic material is stabilized, or in the case of the organic material, since there is a large difference in a movement rate between the hole and the electron, an appropriate hole transport layer and electron transport layer are used, the hole and the electron may be effectively transported to the luminescent layer. In addition, in order to balance the hole and the electron densities in the luminescent layer to increase luminescence efficiency, the organic electroluminescent device is manufactured to have a multi-layer thin film structure.
Meanwhile, as a representative example of the existing electron transport material, there are aluminum complex and beryllium complex such as Alq3 (tris(8-hydroxyquinoline)aluminum(III)) and Bebq (bis(10-hydroxybenzo-[h]quinolinato)beryllium). However, in the case in which these materials are used in a blue electroluminescent device, color purity may be decreased due to luminescence caused by exciton diffusion.
In addition, TPBI, which was reported by Kodak in 1996 disclosed in US Patent No. 5,645,948, (See the following structure), is known to be a representative material for electron transport layer having an imidazole group. This material contains three N-phenyl benzimidazole groups at 1, 3, and 5 substitution positions of benzene, and has a function of blocking holes from a luminescent layer as well as transporting electrons. However, stability of TPBI is too low to be actually used in the device.
Figure PCTKR2013001371-appb-I000001
In the case of the electron transport material according to the related art, unlike the reported contents, actually, the material may slightly improve only a driving voltage, or there are problems such as significant deterioration of a device driving lifespan or negative properties such as variation in the device lifespan according to the color, and deterioration of thermal stability, or the like.
In addition, a fluorescent material was used in the organic electroluminescent device according to the related art, but gradually, phosphorescent material has been mainly used in the organic electroluminescent device. Therefore, in the electron transport material, which is a common material of the organic electroluminescent device, electron mobility appropriate for the phosphorescent material, low driving voltage, and a hole blocking property have been required.
An embodiment of the present invention is directed to providing a new electron transport material capable of significantly improving luminescence efficiency, stability and a lifespan of a device.
In addition, an embodiment of the present invention is directed to providing an organic electroluminescent device capable of having an excellent luminescence property by using the new electron transport material and decreasing consumption power by decreasing driving voltage to induce increase in power efficiency.
In one general aspect, there are provided an electron transport material represented by the following Chemical Formula 1, and an organic electroluminescent device containing the same. The electron transport material according to the present invention is used, such that excellent luminescence property may be obtained, and an increase in power efficiency is induced by decreasing driving voltage, such that the organic electroluminescent device using less consumption power may be manufactured.
[Chemical Formula 1]
Figure PCTKR2013001371-appb-I000002
[In Chemical Formula 1,
A, B, C, and D each are independently C-(L1)m-Ar1 or N, but two of A, B, C, and D are N, the other two are C-(L1)m-Ar1, and each of -(L1)m-Ar1 may be the same as or different from each other, but two -(L1)m-Ar1 are not hydrogen at the same time;
L is (C1-C20)alkylene or (C2-C20)alkenylene, a carbon atom (-CH2-) of alkylene of L may be substituted with a heteroatom selected from NR(R is (C1-C30)alkyl), O, and S, and a carbon atom (=CH-) of alkenylene of L may be substituted with N;
R1 to R4 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
L1(s) each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
m is an integer of 1 to 3, and in the case in which m is an integer of 2 or more, L1(s) each are the same as or different from each other;
Ar1(s) each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
alkyl, cycloalkyl, aryl, heteroaryl of R1 to R4, alkylene or alkenylene of L, arylene and heteroarylene of L1, and aryl and heteroaryl of Ar1 may be substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)aryl, mono or di(C1-C30)alkylamino, mono or di(C6-C30)arylamino, tri(C1-C30)alkylsilyl, di(C1-C30)alkyl(C6-C30)arylsilyl, tri(C6-C30)arylsilyl, nitro, and hydroxy; and
Heteroarylene and heteroaryl contains at least one hetero atom selected from B, N, O, S, P(=O), Si and P.
The terms “alkyl”, “alkoxy” and other substituents including an “alkyl" part described in the present invention include both of the straight chain type and the branched chain type, and the term “cycloalkyl” includes polycyclic hydrocarbon such as substituted or unsubstituted adamantyl or substituted or unsubstituted (C7-C30)bicycloalkyl as well as monocyclic ring system. The term “aryl” described herein, which is an organic radical derived from aromatic hydrocarbon by the removal of one hydrogen atom, may include a single ring or a fused ring containing, preferably 4 to 7 ring atoms, and more preferably 5 or 6 ring atoms, and include rings in which two or more aryl groups are combined through a single bond(s). Specific examples of aryl include phenyl, naphthyl, biphenyl, terphenyl, anthryl, indenyl, fluorenyl, phenanthryl, triphenylenyl, pyrenyl, perylenyl, chrysenyl, naphtacenyl, fluoranthenyl, and the like. The term “heteroaryl” described herein means an aryl group containing 1 to 4 hetero atom(s) selected from B, N, O, S, P(=O), Si, and P for the aromatic cyclic backbone atoms, and carbon atom(s) for remaining aromatic cyclic backbone atoms. The heteroaryl may be a 5- or 6-membered monocyclic heteroaryl or a polycyclic heteroaryl which is fused with one or more benzene ring(s), and may be partially saturated. In addition, the “heteroaryl”in the present invention may include the structures having one or more heteroaryl group(s) bonded through a single bond. The heteroaryl groups may include divalent aryl groups of which the heteroatoms are oxidized or quarternized, for example, to form N-oxides, quaternary salts, or the like. Specific examples of the heteroaryl group include monocyclic heteroaryl groups such as furyl, thiophenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, triazinyl, tetrazinyl, triazolyl, tetrazolyl, furazanyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, or the like; polycyclic heteroaryl groups such as benzofuranyl, benzothiophenyl, isobenzofuranyl, benzimidazolyl, benzothiazolyl, benzisothiazolyl, benzisoxazolyl, benzoxazolyl, isoindolyl, indolyl, indazolyl, benzothiadiazolyl, quinolyl, isoquinolyl, cinnolinyl, quinazolinyl, quinoxalinyl, carbazolyl, phenanthridinyl, benzodioxolyl, dibenzofuranyl, dibenzothiophenyl, or the like; and corresponding N-oxides (for example, pyridyl N-oxide, quinolyl N-oxide); quaternary salts thereof, and the like.
Further,‘(C1-C30)alkyl’described herein may be preferably (C1-C20)alkyl, more preferably, (C1-C10)alkyl, and ‘(C6-C30)aryl’described herein may be preferably (C6-C20)aryl. ‘(C3-C30)heteroaryl’may be preferably (C3-C20)heteroaryl. ‘(C3-C30)cycloalkyl’may be preferably (C3-C20)cycloalkyl, more preferably (C3-C7)cycloalkyl.
More specifically, the electron transport material according to the present invention may be represented by the following Chemical Formula 2 or 3.
[Chemical Formula 2]
Figure PCTKR2013001371-appb-I000003
[Chemical Formula 3]
Figure PCTKR2013001371-appb-I000004
[In Chemical Formulas 2 and 3,
R1 to R4 and L each has the same definition in Chemical Formula 1;
L2 and L3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
x and y each are independently an integer of 1 to 3, wherein when x is an integer of 2 or more, L2(s) are the same as or different from each other, and when y is an integer of 2 or more, L3(s) are the same as or different from each other;
Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
Arylene and heteroarylene of L2 and L3, and aryl and heteroaryl of Ar2 and Ar3 may be substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)aryl, mono or di(C1-C30)alkylamino, mono or di(C6-C30)arylamino, tri(C1-C30)alkylsilyl, di(C1-C30)alkyl(C6-C30)arylsilyl, tri(C6-C30)arylsilyl, nitro, and hydroxy; and
-(L2)x-Ar2 and -(L3)y-Ar3 are not hydrogen at the same time.]
More specifically, the electron transport material according to the present invention may be represented by the following Chemical Formulas 4 to 9.
[Chemical Formula 4]
Figure PCTKR2013001371-appb-I000005
[Chemical Formula 5]
Figure PCTKR2013001371-appb-I000006
[Chemical Formula 6]
Figure PCTKR2013001371-appb-I000007
[Chemical Formula 7]
Figure PCTKR2013001371-appb-I000008
[Chemical Formula 8]
Figure PCTKR2013001371-appb-I000009
[Chemical Formula 9]
Figure PCTKR2013001371-appb-I000010
[In Chemical Formulas 4 to 9,
R1 to R6 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
L2 and L3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
x is an integer of 1 to 3, and when x is an integer of 2 or more, L1(s) each are the same as or different from each other,
Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl; and arylene of L2 and L3 and aryl and heteroaryl of Ar2 and Ar3 may be further substituted with at least one selected from a group consisting of (C1-C30)alkyl, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, and (C3-C30)heteroaryl.]
In the electron transport material of Chemical Formula 1, L2 and L3 each are a single bond, phenylene, biphenylene, 9,9-dimethylfluorenylene, naphthylene, anthrylene, pyridinylene, or pyrimidinylene; Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, or selected from the following structure; and
Figure PCTKR2013001371-appb-I000011
R', R'', and R''' each may be independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, or (C1-C30)alkyl(C6-C30)aryl.
The electron transport material may be, for example, the following compounds, but is not limited thereto.
Figure PCTKR2013001371-appb-I000012
Figure PCTKR2013001371-appb-I000013
Figure PCTKR2013001371-appb-I000014
Figure PCTKR2013001371-appb-I000015
Figure PCTKR2013001371-appb-I000016
Figure PCTKR2013001371-appb-I000017
Figure PCTKR2013001371-appb-I000018
Figure PCTKR2013001371-appb-I000019
Figure PCTKR2013001371-appb-I000020
Figure PCTKR2013001371-appb-I000021
Figure PCTKR2013001371-appb-I000022
Figure PCTKR2013001371-appb-I000023
Figure PCTKR2013001371-appb-I000024
Figure PCTKR2013001371-appb-I000025
Figure PCTKR2013001371-appb-I000026
Figure PCTKR2013001371-appb-I000027
Figure PCTKR2013001371-appb-I000028
Figure PCTKR2013001371-appb-I000029
Figure PCTKR2013001371-appb-I000030
Figure PCTKR2013001371-appb-I000031
Figure PCTKR2013001371-appb-I000032
Figure PCTKR2013001371-appb-I000033
Figure PCTKR2013001371-appb-I000034
Figure PCTKR2013001371-appb-I000035
Figure PCTKR2013001371-appb-I000036
Figure PCTKR2013001371-appb-I000037
Figure PCTKR2013001371-appb-I000038
Figure PCTKR2013001371-appb-I000039
Figure PCTKR2013001371-appb-I000040
Figure PCTKR2013001371-appb-I000041
Figure PCTKR2013001371-appb-I000042
Figure PCTKR2013001371-appb-I000043
Figure PCTKR2013001371-appb-I000044
Figure PCTKR2013001371-appb-I000045
Figure PCTKR2013001371-appb-I000046
Figure PCTKR2013001371-appb-I000047
Figure PCTKR2013001371-appb-I000048
Figure PCTKR2013001371-appb-I000049
Figure PCTKR2013001371-appb-I000050
Figure PCTKR2013001371-appb-I000051
Figure PCTKR2013001371-appb-I000052
Figure PCTKR2013001371-appb-I000053
Figure PCTKR2013001371-appb-I000054
Figure PCTKR2013001371-appb-I000055
Among the electron transport materials according to the present invention, a process of preparing an electron transport material of Chemical Formula 2 when x and y are 1 is represented by the following Reaction Formula 1, and a process of preparing an electron transport material of Chemical Formula 2 in the case in which x is 3 and y is 1 is represented by the following Reaction Formulas 2 to 4. However, The electron transport material is not limited thereto, but may be prepared by an organic reaction known in the art.
[Reaction Formula 1]
Figure PCTKR2013001371-appb-I000056
[R1 to R4, L, L2, L3, Ar2, and Ar3 each has the same definition in Chemical Formula 2, X1 and X2 are halogen or
Figure PCTKR2013001371-appb-I000057
but are not equal to each other.]
[Reaction Formula 2]
Figure PCTKR2013001371-appb-I000058
[Reaction Formula 3]
Figure PCTKR2013001371-appb-I000059
[Reaction Formula 4]
Figure PCTKR2013001371-appb-I000060
In another general aspect, there is provided an organic electroluminescent device including a first electrode; a second electrode; and at least one organic layer interposed between the first and second electrodes, wherein the organic layer includes an electron transport layer containing an electron transport material of Chemical Formula 1. In the case in which the electron transport material of Chemical Formula 1 is used in the electron transport layer, driving voltage may be decreased, such that an increase in power efficiency may be induced, thereby decreasing consumption power.
Further, the organic layer may include at least one electron transport layer in which the electron transport material of Chemical Formula 1 is contained and at least one luminescent layer configured of a fluorescent host and a fluorescent dopant or a phosphorescent host and a phosphorescent dopant, wherein the fluorescent host, the fluorescent dopant, the phosphorescent host, or the phosphorescent dopant are not particularly limited.
The electron transport material according to the present invention may have the excellent luminescence property and decrease the driving voltage to increase the power efficiency, such that the organic electroluminescent device using less consumption power may be manufactured.
FIG. 1 is a graph showing efficiency (cd/A) and luminance (cd/m2) of organic electroluminescent devices manufactured in Examples 7 to 12 and Comparative Example 1.
FIG. 2 is a graph showing efficiency (cd/A) and luminance (cd/m2) of organic electroluminescent devices manufactured in Examples 22 to 30 and Comparative Example 1
Hereinafter, an electron transport compound according to the present invention, a preparing method thereof, and luminescence properties of a device will be described in detail using a representative compound of the present invention as an example. However, the examples are for illustrating the present invention and not for limiting the present invention.
[Preparation Example 1] Preparation of Compound A
Figure PCTKR2013001371-appb-I000061
Preparation of Compound A-1
Alpha-tetralone (80g, 0.55mol) and 4-bromobenzaldehyde (106.5g, 0.58mol) were dissolved in ethanol (480mL), and then sodium hydroxide (27.4g, 0.68mol) was slowly added thereto at 0℃. After the mixture was stirred at room temperature for 3 hours, the prepared solid was separated by filtering under reduced pressure and sequentially washed with methanol, distilled water, and methanol. The washed material was dried, thereby obtaining Compound A-1 (148g, 69.8%) as a yellow solid.
1H NMR (CDCl3) d 7.97 (1H, d), 7.67-7.54 (7H, m), 7.46 (1H, t), 2.91 (2H, t), 2.73 (2H, t)
Preparation of Compound A-2
Compound A-1 (80g, 0.26mol), benzamidinehydrochloride (44g, 0.28mol), sodium hydroxide (15g, 0.38mol), and ethanol (1200mL) were mixed and refluxed for 12 hours. When the reaction was completed, the resultant material was cooled to room temperature, and the precipitated solid was filtered under reduced pressure and washed with water and ethanol. The washed material was dried, thereby obtaining Compound A-2 (50g, 47.4%) as a white solid.
1H NMR (CDCl3) d 8.65 (3H, m), 7.70 (4H, q), 7.51 (5H, m), 7.28 (1H, s), 3.09 (2H, t), 2.93 (2H, t)
Preparation of Compound A-3
Compound A-2 (20g, 0.048mol), 2,3-dichloro-5,6-dicyanoparabenzoquinone (DDQ, 27.5g, 0.12mol), and dichlorobenzene (200mL) were mixed and stirred at 120 for 4 hours. When the reaction was completed, the resultant material was cooled to room temperature and dispersed in methanol, followed by filtering under reduced pressure, thereby obtaining Compound A-3 (13.2g, 66.3%) as a white solid.
1H NMR (CDCl3) d 8.65 (3H, m), 7.70 (6H, q), 7.51 (7H, m), 7.28 (1H, s)
Preparation of Compound A
Compound A-3(10g, 24.3mmol), bis(pinacolato)diboron (6.48g, 25.5mmol), 1,4-dioxane (200mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.36g, 0.49mmol), and potassium acetate (4.8g, 48.6mmol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound A (9.8g, 87.9%) as a yellow solid.
1H NMR (CDCl3) d 8.62 (3H, m), 7.68 (6H, q), 7.55 (7H, m), 7.12 (1H, s), 1.40 (s, 12H)
[Preparation Example 2] Preparation of Compound B
Figure PCTKR2013001371-appb-I000062
Preparation of Compound B-1
2-bromo-9,9-dimethylfluorene (10g, 24.3mmol), bis(pinacolato)diboron (19.52g, 76.88mmol), 1,4-dioxane (400mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.07g, 1.46mmol), and potassium acetate (14.37g, 146.43mmol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound B-1 (18g, 76.8%) as a white solid.
1H NMR (CDCl3) d 7.78 (2H, d), 7.57 (2H, m), 7.38 (3H, m), 1.58 (s, 6H), 1.40 (s, 12H)
Preparation of Compound B
Trichloropyrimidine (5g, 27.26mmol), Compound B-1(17.6g, 55.1mmol), Pd(PPh3)4(0.63g, 0.55mmol), K2CO3(7.53g, 54.52mmol), distilled water (25mL), and THF(50mL) were mixed and stirred under reflux for 12 hours. After an organic layer was extracted with MC, the extracted organic layer was concentrated under reduced pressure and washed with acetone, thereby obtaining Compound B (9.3g, 68.4%).
1H NMR (CDCl3) d 8.29 (d, 2H), 8.18-8.16 (d, 2H), 8.12 (s, 1H), 7.9 (d, 2H), 7.84-7.82 (m, 2H), 7.53-7.51 (m, 2H), 7.44-7.41 (m, 4H), 1.62 (s, 12H)
[Preparation Example 3] Preparation of Compound C
Figure PCTKR2013001371-appb-I000063
Preparation of Compound C-1
Dichloromethane (31mL) and 3-bromobenzoyl chloride (25g, 0.1139mol) were mixed and stirred at -10℃. After 3-bromobenzoyl chloride was completely dissolved, a mixing solution of pyridine (106mL) and 2-chloropyridine-3-amine (13.2g, 0.1026mol) was slowly dropped thereinto and stirred. After 2 hours 30 minutes, water (1250mL) was added thereto, and the prepared solid compound was filtered and washed with methanol. The resultant material was dried, thereby obtaining Compound C-1(28.0g, 87%) as a white solid.
1H NMR (CDCl3) d 8.58 (m, 1H), 8.31 (d, 1H), 8.30 (t, 1H), 8.14 (m, 1H), 7.90 (m, 1H), 7.45 (q, 1H), 7.40 (t, 1H)
Preparation of Compound C-2
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU, 110mL), Compound C-1 (27g, 0.0866mol), and Lawesson`s reagent (35.1g) were mixed and stirred under reflux. After 2 hours 30 minutes, the mixture was extracted with ethyl acetate (EA) and concentrated, thereby obtaining Compound C-2 (20g, 80%) as a light yellow solid.
1H NMR (CDCl3) d 8.62-8.60 (d, 1H), 8.33 (d, 1H), 8.30 (t, 1H), 8.03-8.00 (d, 1H), 7.68-7.65 (d, 1H), 7.50-7.46 (q, 1H), 7.41 (t, 1H)
Preparation of Compound C
Compound C-2 (27.47g, 103mmol), bis(pinacolato)diboron (27.47g, 108mmol), 1,4-dioxane (450mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.68g, 2.1mmol), and potassium acetate (20.22g, 206.1mmol) were mixed and stirred under reflux for 12 hours. Then, the mixture was cooled to room temperature. An organic layer was extracted by adding saturated sodium chloride (NaCl) aqueous solution and ethyl acetate (EA) to the reactant, dried over magnesium sulfate (MgSO4), and treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended and stirred in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound C (41.8g, 89 %).
1H NMR (CDCl3) d 8.60-8.58 (d, 1H), 8.50 (s, 1H), 8.32-8.30 (d, 1H), 8.25-8.22 (d, 1H), 7.99-7.97 (d, 1H), 7.55 (t, 1H), 7.48-7.44 (q, 1H), 1.40 (s, 12H)
[Preparation Example 4] Preparation of Compound D
Figure PCTKR2013001371-appb-I000064
Preparation of Compound D-1
4-bromophenacyl bromide (100g, 360mmol) was slowly added to pyridine (1000mL) while stirring pyridine (1000mL). After the mixture was stirred at room temperature for 2 hours, the precipitated solid was separated by filtering under reduced pressure and washed with methanol. The prepared compound (120g, 336mmol), trans-Chalcone (35g, 168mmol), ammonium acetate (25.9g, 336mmol), and methanol (450mL) were mixed and stirred under reflux for 12 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was separated by filtering under reduced pressure and washed with methanol, thereby obtaining Compound D-1 (25.5g, 47%) as a white solid.
1H NMR (CDCl3) d 7.46-7.58(m, 6H), 7.65(d, 2H), 7.76(d, 2H), 7.78(d, 2H), 8.12(d, 2H), 8.22(d, 2H)
Preparation of Compound D
Compound D-1 (25g, 64.7mmol), bis(pinacolato)diboron, (19.7g, 77.6mmol), 1,4-dioxane (600mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.6g, 1.9mmol), and potassium acetate (12.7g, 129mmol) were mixed and stirred under reflux for 12 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered under reduced pressure and separated using a silica gel column (hexane: ethyl acetate =10:1), thereby obtaining Compound D (21.6g, 77%) as a white solid.
1H NMR (CDCl3) d 1.41(s, 12H), 7.47-7.58(m, 6H), 7.77(d, 2H), 7.92-7.99(m, 4H), 8.21-8.25(m, 4H)
[Preparation Example 5] Preparation of Compound E
Figure PCTKR2013001371-appb-I000065
Preparation of Compound E-1
3-bromobenzaldehyde (35g, 239mmol) and 1-tetralone (46.6g, 252mmol) were dissolved in ethanol (200mL), and then sodium hydroxide (11.9g, 299mmol) was slowly added thereto at 0℃. After the mixture was stirred at room temperature for 12 hours, the prepared solid was separated by filtering under reduced pressure and washed with methanol, thereby obtaining Compound E-1 (64.2g, 85%) as a light yellow solid.
1H NMR (CDCl3) d 2.98(t, 2H), 3.12(t, 2H), 7.27-7.41(m, 4H), 7.49-7.54(m, 2H), 7.59(s, 1H), 7.79(s, 1H), 8.14(d, 1H)
Preparation of Compound E-2
Compound E-1 (60g, 190mmol), benzamidinehydrochloride (33g, 210mmol), sodium hydroxide (11.4g, 290mmol), and ethanol (600mL) were mixed and refluxed for 12 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered under reduced pressure and separated using a silica gel column (hexane: methylene chloride =1:1), thereby obtaining Compound E-2 (54.4g, 68%) as a light yellow solid.
1H NMR (CDCl3) d 2.87(t, 2H), 3.02(t, 2H), 7.24(s, 1H), 7.34-7.61(m, 7H), 7.87(s, 2H), 8.56-8.63(m, 3H)
Preparation of Compound E
Compound E-2 (62.7g, 151mmol), DDQ (34g, 151mmol), and 1,2-dichlorobenzene (600mL) were mixed and refluxed at 120℃ for 12 hours. When the reaction was completed, the reactant was cooled to room temperature and extracted with water and methylene chloride, followed by separation using a silica gel column (hexane: methylene chloride =1:1), thereby obtaining Compound E (22.42g, 36%) as a light yellow solid.
1H NMR (CDCl3) d 7.47-7.59(m, 4H), 7.72-8.07(m, 8H), 8.82(d, 2H), 9.54(m, 1H)
[Preparation Example 6] Preparation of Compound F
Figure PCTKR2013001371-appb-I000066
Preparation of Compound F-1
N1-phenylbenzene-1,2-diamine (48g, 260mmol) was completely dissolved in N,N-Dimethyl acetamide (DMAC, 100mL) at 0℃, and then 4-bromobenzoyl chloride (63g, 287mmol) was dropped thereinto and stirred. After 2 hours 30 minutes, pyridine (60mL) and water (100mL) were added thereto. After stirring the mixture for 30 minutes, the prepared solid was filtered while being washed with methanol, thereby obtaining Compound F-1 (95g, 95%) as a white solid.
Preparation of Compound F-2
Compound F-1 (50g, 136mmol), p-toluene sulfonic acid (PTSA, 46.9g, 272mmol), and toluene (500mL) were mixed and stirred under reflux with a Dean-stark trap under nitrogen atmosphere. After 2 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid obtained by concentrating the filtrate under reduced pressure was re-crystallized, thereby obtaining Compound F-2 (39g, 81%).
1H NMR (CDCl3) d 8.24(d, 1H), 7.66(m, 3H), 7.62-7.46(m, 6H), 7.40(m, 2H), 7.32(d, 2H)
Preparation of Compound F
Compound F-2 (38.6g, 110mmol), potassium acetate (32.4g, 330mmol), bis(pinacolato)diboron (36.5g, 143mmol), 1,4-dioxane (390mL), and PdCl2(dppf) (1.8g, 2mmol) were mixed and stirred at 80 for 18 hours, and then cooled at room temperature. Water (400mL) was added to the reactant and stirred. After stirring, an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, dried over magnesium sulfate, and treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was re-crystallized, thereby obtaining Compound F (36g, 82%).
1H NMR (CDCl3) d 7.92(d, 1H), 7.76(d, 2H), 7.59(d, 2H), 7.56-7.45(m, 3H), 7.41-7.29(m, 4H), 7.27(s, 1H), 1.35(s, 12H)
[Preparation Example 7] Preparation of Compound G
Figure PCTKR2013001371-appb-I000067
Preparation of Compound G-1
1-indanone (80g, 0.61mol) and 4-bromobenzaldehyde (117.8g, 0.64mol) were dissolved in ethanol (1280mL), and then sodium hydroxide (30.3g, 0.76mol) was slowly added thereto at 0℃. After the mixture was stirred at room temperature for 3 hours, the prepared solid was separated by filtering under reduced pressure and sequentially washed with methanol, distilled water, and methanol. The resultant material was dried, thereby obtaining Compound G-1 (130g, 71.8%) as a yellow solid.
1H NMR (CDCl3) d 7.97 (1H, d), 7.67-7.54 (7H, m), 7.46 (1H, t), 3.32 (2H, d)
Preparation of Compound G-2
Compound G-1 (60g, 0.20mol), benzamidinehydrochloride (94.2g, 0.60mol), sodium hydroxide (24.1g, 0.60mol), and ethanol (1200mL) were mixed and refluxed for 12 hours. When the reaction was completed, the reactant was cooled to room temperature, and the precipitated solid was filtered under reduced pressure and washed with water and ethanol. The resultant material was dried, thereby obtaining Compound G-2 (43g, 53.7%) as a yellow solid.
1H NMR (CDCl3) d 8.65 (3H, m), 7.70 (4H, q), 7.51 (5H, m), 7.28 (1H, s), 3.40 (2H, d)
Preparation of Compound G
Compound G-2 (50g, 0.13mol), potassium tertiary butoxide (t-BuOK, 29.5g, 0.26mol), and tetrahydrofuran (THF, 750mL) were mixed and stirred at 0℃ until the mixture was completely dissolved. Then, methyliodide (MeI, 44.4g, 0.31mol) was slowly added thereto. When the reaction was completed after stirring at room temperature for 4 hours, water is added thereto. Then, the resultant was extracted with MC and dried over anhydrous magnesium sulfate, followed by filtration and concentration under reduce pressure, thereby obtaining Compound G (24g, 44.9%) as a white solid.
1H NMR (CDCl3) d 8.65 (3H, m), 7.70 (4H, q), 7.51 (5H, m), 7.28 (1H, s), 3.40 (2H, d), 1.67 (6H, s)
[Preparation Example 8] Preparation of Compound H
Figure PCTKR2013001371-appb-I000068
Preparation of Compound H-1
9-bromophenanthrene (67.2g, 0.26mol), bis(pinacolato)diboron, (69.68g, 0.27mol), 1,4-dioxane (1350mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (3.82g, 5.23mmol), and potassium acetate (51.3g, 0.52mol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over anhydrous magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound H-1 (69.2g, 69.2%) as a solid.
1H NMR (CDCl3) d 8.89 (d, 1H), 8.86 (d, 1H), 8.11-7.78 (m, 7H) , 1.40 (s, 12H)
Preparation of Compound H-2
Compound H-1 (64.5g, 0.21mol), 1-bromo-4-iodobenzene (60.0g, 0.21mol), Pd(PPh3)4 (4.9g, 4.2mmol), 2M K2CO3 aqueous solution (300mL), and THF (600mL) were mixed and stirred under reflux for 24 hours. After an organic layer was extracted with MC, the extracted organic layer was concentrated under reduced pressure and washed with acetone, thereby obtaining Compound H-2 (60.1g, 84.9%).
1H NMR (CDCl3) d 8.89 (d, 1H), 8.86 (d, 1H), 8.11-7.78 (m, 11H)
Preparation of the compound H
Compound H-2 (60.0g, 0.18mol), bis(pinacolato)diboron, (48.0g, 0.19mol), 1,4-dioxane (1200mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (2.64g, 3.60mmol), and potassium acetate (35.4g, 0.36mol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound H (32.0g, 46.7%) as a solid.
1H NMR (CDCl3) d 8.89 (d, 1H), 8.86 (d, 1H), 8.11-7.78 (m, 11H), 1.40 (s, 12H)
[Preparation Example 9] Preparation of Compound I
Figure PCTKR2013001371-appb-I000069
2-bromodibenzothiophene (50g, 190mmol), bis(pinacolato)diboron, (50.7g, 199.5mmol), 1,4-dioxane (1000mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (2.78g, 3.8mmol), and potassium acetate (37.3g, 380mmol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over anhydrous magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. The filtrate was concentrated under reduced pressure, thereby obtaining Compound I (23g, 39%).
1H NMR (CDCl3) d 7.88 (m, 4H), 7.32 (m, 3H), 1.40 (s, 12H)
[Preparation Example 10] Preparation of Compound J
Figure PCTKR2013001371-appb-I000070
Compound G (10g, 23.4mmol), bis(pinacolato)diboron, (6.5g, 25.5mmol), 1,4-dioxane (200mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.2g, 0.3mmol), and potassium acetate (4.6g, 46.8mmol) were mixed and stirred under reflux. After 12 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound J (9.8g, 87.9%) as a yellow solid.
1H NMR (CDCl3) d 8.62 (3H, m), 7.68 (4H, q), 7.55 (5H, m), 7.12 (1H, s), 1.40 (s, 12H)
[Preparation Example 11] Preparation of Compound K
Figure PCTKR2013001371-appb-I000071
1-bromopyrene (40g, 142mmol), bis(pinacolato)diboron, (39.74g, 157mmol), 1,4-dioxane (480mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.16g, 1.4mmol), and potassium acetate (27.93g, 284mmol) were mixed and stirred under reflux. After 9 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was re-crystallized in ethylacetate, thereby obtaining Compound K (34.09g, 73%).
1H NMR (CDCl3) d 8.12-8.1 (d, 2H), 7.93-7.70 (m, 5H), 7.71 (d, 2H), 1.26 (q, 12H)
[Preparation Example 12] Preparation of Compound L
Figure PCTKR2013001371-appb-I000072
Preparation of Compound L-1
Dichloromethane (31mL) and 4-bromobenzoyl chloride (25g, 0.1139mol) were mixed and stirred at -10℃. After 4-bromobenzoyl chloride was completely dissolved, a mixing solution of pyridine (106mL) and 2-chloropyridine-3-amine (13.2g, 0.1026mol) was slowly dropped thereinto and stirred. After 2 hours 30 minutes, water (1250mL) was added thereto, and the prepared solid compound was filtered and washed with methanol. The resultant material was dried, thereby obtaining Compound L-1(28.0g, 87%) as a white solid.
1H NMR (CDCl3) d 8.43 (d, 1H), 8.00 (s, 1H), 7.84-7.15 (d, 2H), 7.69-7.17 (m, 4H)
Preparation of Compound L-2
1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU, 100mL), Compound L-1 (27g, 0.0866mol), and Lawesson s reagent (35.1g) were mixed and stirred under reflux. After 2 hours 30 minutes, an organic layer was extracted with ethylacetate (EA) and dried over magnesium sulfate, followed by filtering. Then, a solid prepared by concentrating the filtrate under reduced pressure was washed with methanol, thereby obtaining Compound L-2 (20g, 80%).
1H NMR (CDCl3) d 8.59 (d, 1H), 7.75 (d, 1H), 7.49-7.26 (d, 2H), 7.38-7.15 (m, 3H)
Preparation of the compound L
Compound L-2 (27.47g, 103mmol), bis(pinacolato)diboron, (27.47g, 108mmol), 1,4-dioxane (450mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.68g, 2.1mmol), and potassium acetate (20.22g, 206.1mmol) were mixed and stirred under reflux for 12 hours. Then, the mixture was cooled to room temperature. An organic layer was extracted by adding saturated sodium chloride (NaCl) aqueous solution and ethylacetate (EA) to the reactant, dried over magnesium sulfate (MgSO4), and treated with activated charcoal, followed by filtering with celite. After a solid prepared by concentrating the filtrate under reduced pressure was suspended and stirred in hexane, the suspension was filtered again and washed with hexane, thereby obtaining Compound L (41.8g, 89 %).
1H NMR (CDCl3) d 8.59 (d, 1H), 7.75 (d, 1H), 7.50-7.22 (m, 2H), 7.38-7.06 (m, 3H), 1.26 (s, 12H)
[Preparation Example 13] Preparation of Compound M
Figure PCTKR2013001371-appb-I000073
2.7-dibromo-9,9-dimethyl-9H-fluorene (25g, 71.0mmol), bis(pinacolato)diboron, (37.87g, 149mmol), 1,4-dioxane (300mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.58g, 0.7mmol), and potassium acetate (13.94g, 142mmol) were mixed and stirred under reflux. After 9 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was re-crystallized in ethylacetate, thereby obtaining Compound M (30.9g, 61%).
1H NMR (CDCl3) d 7.80 (m, 2H), 7.60 (m, 2H), 7.40 (m, 2H), 1.67-0.86 (s, 6H), 1.26 (s, 24H)
[Preparation Example 14] Preparation of Compound N
Figure PCTKR2013001371-appb-I000074
1,4-dibromonaphthalene (25g, 87.4mmol), bis(pinacolato)diboron, (46.62g, 184mmol), 1,4-dioxane (300mL), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.71g, 0.9mmol), and potassium acetate (17.16g, 174.8mmol) were mixed and stirred under reflux. After 9 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was re-crystallized in ethylacetate, thereby obtaining Compound N (21.93g, 66%).
1H NMR (CDCl3) d 7.70-7.67 (m, 2H), 7.30-7.32 (m, 4H), 1.26 (s, 30H)
[Example 1] Preparation of Compound 100
Figure PCTKR2013001371-appb-I000075
Preparation of Compound 100
Compound A (Preparation Example 1, 9.8g, 23.83mmol), Compound B (Preparation Example 2, 12.0g, 24.1mmol), Pd(PPh3)4 (0.55g, 0.48mmol), K2CO3 (6.59g, 47.65mmol), distilled water (49mL), and THF(98mL) were mixed and stirred under reflux for 12 hours. When the reaction was completed, the reactant was cooled to room temperature, and the prepared solid was washed with water and methanol, thereby obtaining Compound 100 (12.1g, 63.4%).
1H NMR (CDCl3) d 9.61(t, 1H), 9.05(d, 2H), 8.94(d, 2H), 8.47(s, 2H), 8.38(dd, 2H), 8.20(d. 3H), 8.15(d, 1H), 7.98(d, 3H), 7.86(m, 5H), 7.59(m, 5H), 7.44(t, 4H), 1.68(12H)
MALDI-TOF MS: m/z 694.98, cal. 695.61
[Example 2] Preparation of Compound 98
Figure PCTKR2013001371-appb-I000076
2-bromo-9,9-dimethyl-9H-fluorene (9g, 32.9mmol), Compound A (Preparation Example 1, 15.10g, 32.9mmol), THF (135mL), Pd(PPh3)4 (0.38g, 0.3mmol), and 1M potassium carbonate aqueous solution (68mL) were mixed and stirred under reflux. After reaction for 18 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, dried over magnesium sulfate, and treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was re-crystallized, thereby obtaining Compound 98 (14.58g, 84%).
1H NMR (CDCl3) d 8.62(3H,m), 7.78(2H,d), 7.68(6H,q), 7.60(2H,m), 7.55(5H,m), 7.42(1H,s), 7.38(3H,m), 1.58 (s, 6H)
MALDI-TOF MS: m/z 524.65, cal. 525.23
[Example 3] Preparation of Compound 105
Figure PCTKR2013001371-appb-I000077
Compound A-3 (Preparation Example 1, 16.87g, 36.8mmol), Compound C (Preparation Example 3, 11.8g, 40.5mmol), THF (300mL), Pd(PPh3)4 (0.85g, 0.74mmol), and 2M potassium carbonate aqueous solution (55mL) were mixed and stirred under reflux. After reaction for 18 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and ethyl acetate, and dried over magnesium sulfate, followed by concentration under reduced pressure. After the solid obtained after concentration was input in ethyl acetate and suspended under heating, the suspension was filtered and washed with ethyl acetate, thereby obtaining Compound 105 (17.7g, 89%).
1H NMR (CDCl3) d 9.62(d, 1H),8.91 (d, 2H), 8.64 (d, 1H), 8.50(s, 1H), 8.38 (d, 1H), 8.16 (d, 1H), 8.11-7.92 (m, 2H), 7.91(d, 2H), 7.88-7.72 (m, 3H), 7.70 (t, 1H), 7.63-7.57 (m, 2H), 7.52 (dd, 1H)
MALDI-TOF MS: m/z 542.652 cal. 542.979
[Example 4] Preparation of Compound 106
Figure PCTKR2013001371-appb-I000078
Compound A-3 (Preparation Example 1, 14g, 34mmol), Compound D (Preparation Example 4, 17.7g, 41mmol), Pd(PPh3)4 (0.4g, 0.3mmol), THF (150mL), potassium carbonate (27.6g, 199mmol), and water (200mL) were mixed and stirred under reflux. After reaction for 12 hours, the reactant was cooled to room temperature and extracted with methylene chloride, followed by concentration. The resultant material was recrystallized using methanol, thereby obtaining Compound 106 (16.4g, 75%) as a white solid.
1H NMR (CDCl3) d 7.50-7.61(m, 9H), 7.80-7.98(m, 12H), 8.08(t, 3H), 8.26(d, 2H), 8.38(d, 2H), 8.89(d, 2H), 9.58(t, 1H)
MALDI-TOF MS: m/z 638.16, cal. 637.77
[Example 5] Preparation of compound 113
Figure PCTKR2013001371-appb-I000079
Compound E (Preparation Example 5, 8g, 19mmol), Compound D (Preparation Example 4, 10.11g, 23mmol), Pd(PPh3)4 (0.2g, 0.19mmol), THF (150mL), potassium carbonate (13.8g, 99mmol), and water (100mL) were mixed and stirred under reflux. After reaction for 12 hours, the reactant was cooled to room temperature and extracted with methylene chloride, followed by concentration. The resultant material was washed with hexane and ethyl acetate, thereby obtaining Compound 113 (8.6g, 69%) as a light yellow solid.
1H NMR (CDCl3) d 7.44-7.60(m, 9H), 7.73-7.96(m, 14H), 8.06(d, 1H), 8.22(d, 2H), 8.34(d, 2H), 8.88(d, 2H), 9.58(t, 1H)
MALDI-TOF MS: m/z 638.07, cal. 637.77
[Example 6] Preparation of Compound 110
Figure PCTKR2013001371-appb-I000080
Compound F (Preparation Example 6, 14.74g, 37.2mmol), Compound A-3 (Preparation Example 1, 15.3g, 37.2mmol), THF (230mL), Pd(PPh3)4 (0.43g, 0.4mmol), and 1M potassium carbonate aqueous solution (115mL) were mixed and stirred under reflux. After reaction for 18 hours, the reactant was cooled to room temperature, and an organic layer was extracted by adding saturated sodium chloride aqueous solution and dichloromethane, dried over magnesium sulfate, and treated with activated charcoal, followed by filtering with celite. A solid obtained by concentrating the filtrate under reduced pressure was re-crystallized, thereby obtaining Compound 110 (15.47g, 69%).
1H NMR (CDCl3) d 8.81(d, 2H), 8.64(d,2H), 7.92(d, 1H), 7.75(d, 2H), 7.61(d, 5H), 7.59-7.38(m, 7H), 7.36-7.24(m, 7H), 7.19(s, 2H)
MALDI-TOF MS: m/z 601.32 , cal. 600.71
[Example 7] Preparation of Compound 118
Figure PCTKR2013001371-appb-I000081
Compound G (Preparation Example 7, 10g, 23.4mmol), Compound H (Preparation Example 8, 8.9g, 23.4mmol), THF (150mL), Pd(PPh3)4 (0.54g, 0.47mmol), K2CO3 (19.4g, 140.4mmol), and distilled water (75mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol. The prepared white solid was filtered with celite in toluene with heating. A solid prepared by concentrating the filtrate under reduced pressured was washed with methanol and suspended, followed by filtering, thereby obtaining Compound 118 (11.5g, 81.8%).
1H NMR (CDCl3) d 8.89 (d, 1H), 8.86 (d, 1H), 8.65 (3H, m), 8.11-7.78 (m, 11H), 7.70 (4H, q), 7.51 (5H, m), 7.28 (1H, s), 3.40 (2H, d)
MALDI-TOF MS: m/z 600.71, cal. 600.75
[Example 8] Preparation of Compound 119
Figure PCTKR2013001371-appb-I000082
Compound G (Preparation Example 7, 10g, 23.4mmol), Compound I (Preparation Example 9, 8.9g, 23.4mmol), THF (150mL), Pd(PPh3)4 (0.54g, 0.47mmol), K2CO3 (19.4g, 140.4mmol), and distilled water (75mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol. The prepared white solid was filtered with celite in toluene with heating. A solid prepared by concentrating the filtrate under reduced pressured was washed with methanol and suspended, followed by filtering, thereby obtaining Compound 119 (13g, 91%).
1H NMR (CDCl3) d 8.62 (3H, m), 7.88 (m, 4H), 7.68 (4H, q), 7.55 (5H, m), 7.32 (m, 3H), 7.12 (1H, s), 1.40 (s, 12H)
MALDI-TOF MS: m/z 310.18, cal. 310.22
[Example 9] Preparation of Compound 120
Figure PCTKR2013001371-appb-I000083
1,3-dibromothiophene (10g, 41.3mmol), Compound J (Preparation Example 10, 39.2g, 82.7mmol), THF (200mL), Pd(PPh3)4 (1.91g, 1.65mmol), K2CO3 (68.6g, 496mmol), and distilled water (100mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol, thereby obtaining Compound 120 (22g, 68.5%).
1H NMR (CDCl3) d 8.62 (3H, m), 7.68 (4H, q), 7.55 (5H, m), 7.12 (1H, s), 6.64 (d, 1H)
MALDI-TOF MS: m/z 776.95, cal. 776.99
[Example 10] Preparation of Compound 123
Figure PCTKR2013001371-appb-I000084
Compound G (Preparation Example 7, 15g, 35.1mmol), Compound J (Preparation Example 10, 16.65g, 35.1mmol), THF (250mL), Pd(PPh3)4 (0.81g, 0.70mmol), K2CO3 (29.11g, 210.6mmol), and distilled water (125mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol, thereby obtaining Compound 123 (21.7g, 88.97%).
1H NMR (CDCl3) d 8.62 (3H, m), 7.68 (4H, q), 7.55 (5H, m), 7.12 (1H, s)
MALDI-TOF MS: m/z 694.84, cal. 694.86
[Example 11] Preparation of Compound 121
Figure PCTKR2013001371-appb-I000085
Compound G (Preparation Example 7, 13g, 30.4mmol), Compound B-1 (Preparation Example 2, 9.7g, 30.4mmol), THF (200mL), Pd(PPh3)4 (0.7g, 0.61mmol), K2CO3 (25.2g, 182.5mmol), and distilled water (100mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, the precipitated solid was filtered and washed with methanol, thereby obtaining Compound 121 (14.2g, 86.33%).
1H NMR (CDCl3) d 8.62 (3H, m), 7.78 (2H, d), 7.68 (4H, q), 7.55 (7H, m), 7.38 (3H, m), 7.12 (1H, s)
MALDI-TOF MS: m/z 540.58, cal. 540.70
[Example 12] Preparation of Compound 115
Figure PCTKR2013001371-appb-I000086
Compound G (Preparation Example 7, 24g, 56.2mmol), Compound K (Preparation Example 11, 18.43g, 56.2mmol), THF (360mL), Pd(PPh3)4 (0.65g, 0.56mmol), and 1M K2CO3 aqueous solution (180mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, an organic layer was extracted with saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was suspended in ethyl acetate with heating, followed by filtering, thereby obtaining Compound 115 (21.8g, 71%).
1H NMR (CDCl3) d 8.18-8.12 (d, 2H), 8.04-7.82 (d, 1H), 7.88-7.80 (d, 2H), 7.71-7.65 (m, 4H), 7.54-7.26 (d, 4H), 7.48-7.16 (d, 2H), 7.40-7.22 (d, 1H), 7.32-7.26 (m, 3H), 7.19-7.13 (d, 1H), 7.14-7.18 (d, 2H), 1.67 (s, 6H)
MALDI-TOF MS:m/z 548.7, cal. 548.67
[Example 13] Preparation of Compound 116
Figure PCTKR2013001371-appb-I000087
Compound G (Preparation Example 7, 24g, 56.2mmol), Compound L (Preparation Example 12, 19g, 56.2mmol), THF (360mL), Pd(PPh3)4 (0.65g, 0.56mmol), and 1M K2CO3 aqueous solution (180mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, an organic layer was extracted with saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was suspended in ethyl acetate with heating, followed by filtering, thereby obtaining Compound 116 (22.9g, 73%).
1H NMR (CDCl3) d 8.59 (d, 1H), 7.75 (d, 1H), 7.54-7.26 (m, 10H), 7.40-7.22 (m, 5H), 7.19-7.06 (m, 3H), 1.67 (s, 6H)
MALDI-TOF MS : m/z 558.8, cal. 558.69
[Example 14] Preparation of Compound 114
Figure PCTKR2013001371-appb-I000088
Compound G (Preparation Example 7, 24g, 56.2mmol), Compound M (Preparation Example 13, 15g, 33.6mmol), THF (225mL), Pd(PPh3)4 (0.39g, 0.336mmol), and 1M K2CO3 aqueous solution (113mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, an organic layer was extracted with saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and then treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was suspended in ethyl acetate with heating, followed by filtering, thereby obtaining Compound 114 (21.56g, 70%).
1H NMR (CDCl3) d 7.90-7.84 (d, 2H), 7.77-7.38 (d, 4H), 7.54-7.26 (m, 12H), 7.40-7.22 (d, 2H), 7.32-7.06 (m, 6H), 7.19-7.04 (m, 6H), 1.67 (s, 24H)
LC-MS:m/z 887.2, cal. 887.12
[Example 15] Preparation of Compound 117
Figure PCTKR2013001371-appb-I000089
Compound G (Preparation Example 7, 35.42g, 82.9mmol), Compound N (Preparation Example 14, 15g, 39.5mmol), THF (225mL), Pd(PPh3)4 (0.46g, 0.395mmol), and 1M K2CO3 aqueous solution (113mL) were mixed and stirred under reflux for 18 hours. When the reaction was completed, the reactant was cooled to room temperature. Then, an organic layer was extracted with saturated sodium chloride aqueous solution and ethylacetate, dried over magnesium sulfate, and treated with activated charcoal, followed by filtering with celite. A solid prepared by concentrating the filtrate under reduced pressure was suspended in ethyl acetate with heating, followed by filtering, thereby obtaining Compound 117 (19.4g, 60%).
1H NMR (CDCl3) d 7.67 (d, 2H), 7.60-7.32 (d, 2H), 7.54-7.26 (m, 8H), 7.48-7.22 (m, 6H), 7.32-7.06 (m, 6H), 7.22-7.04 (m, 4H), 7.14-7.01 (m, 4H), 1.67 (s, 12H)
MALDI-TOF MS:m/z 821.1, cal. 821.02
[Example 16] Manufacturing organic electroluminescent device using Compound 100 according to the present invention
A glass substrate (25mm x 25mm x 0.7mm) having an indium tin oxide (ITO) transparent electrode line having a thickness of 150nm was subjected to ultrasonic cleaning for 10 minutes in distilled water in which a detergent was dissolved and then cleaned with distilled water again for 10 minutes. After washing with distilled water, the substrate was subjected to ultrasonic cleaning with solvents in a sequence of isopropyl alcohol, acetone, and methanol for 10 minutes, respectively, and dried. Thereafter, the substrate was dry cleaned using oxygen/argon plasma, then the glass substrate having the transparent electrode line was mounted on a substrate holder of a vacuum vapor deposition apparatus. A film having a thickness of 60nm was formed on a surface on which the transparent electrode line was formed as a hole injection layer using IDE-406 (the following structure, Idemitsu) so as to cover the transparent electrode. Next, a film having a thickness of 30nm was formed on the IDE-406 film as a hole transport layer using H-1 (tetrakis-N-biphenyl-4-yl-benzidine, hereinafter, referred to as the H-1 film ). Then, BD-1 having the following structure and β-ADN(9,10-di(naphthalene-2-yl)anthracene) were deposited on the H-1 film as a dopant and a luminescent host at a weight ratio of 5%, to thereby form a film having a thickness of 20nm as a luminescent layer.
Figure PCTKR2013001371-appb-I000090
A film having a thickness of 20nm was formed on the luminescent layer as an electron transport layer by depositing Compound 100 according to the present invention. Subsequently, lithium quinolate (Liq) was deposited thereon to form an electron injection layer. Metal aluminum was deposited on this Liq film to form a metal cathode, thereby manufacturing the organic electroluminescent device.
[Example 17] Manufacturing organic electroluminescent device using Compound 98 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 98 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 18] Manufacturing organic electroluminescent device using Compound 105 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 105 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 19] Manufacturing organic electroluminescent device using Compound 106 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 106 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 20] Manufacturing organic electroluminescent device using Compound 113 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 113 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 21] Manufacturing organic electroluminescent device using Compound 110 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 110 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 22] Manufacturing organic electroluminescent device using Compound 114 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 114 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 23] Manufacturing organic electroluminescent device using Compound 115 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 115 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 24] Manufacturing organic electroluminescent device using Compound 116 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 116 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 25] Manufacturing organic electroluminescent device using Compound 117 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 117 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 26] Manufacturing organic electroluminescent device using Compound 118 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 118 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 27] Manufacturing organic electroluminescent device using Compound 119 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 119 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 28] Manufacturing organic electroluminescent device using Compound 120 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 120 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 29] Manufacturing organic electroluminescent device using Compound 121 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 121 was used as an electron transport material instead of Compound 100 in Example 16.
[Example 30] Manufacturing organic electroluminescent device using Compound 123 according to the present invention
An organic electroluminescent device was manufactured by the same process in Example 16 except that Compound 123 was used as an electron transport material instead of Compound 100 in Example 16.
[Comparative Example 1] Manufacturing organic electroluminescent device using Compound ETM-1
An organic electroluminescent device was manufactured by the same process in Example 7 except that Compound ETM-1 having the following structure was used as an electron transport material instead of Compound 100 in Example 7.
Figure PCTKR2013001371-appb-I000091
Measurement results of electroluminescence properties and basic physical properties of the organic electroluminescent devices manufactured in Examples 16 to 30 and Comparative Example 1 were shown in Table 1, and a graph of efficiency (cd/A) and luminance (cd/m2) of the organic electroluminescent devices manufactured in Examples 16 to 21 and Comparative Example 1 was shown in FIG. 1. In addition, a graph of efficiency (cd/A) and luminance (cd/m2) of the organic electroluminescent devices manufactured in Examples 22 to 30 and Comparative Example 1 was shown in FIG. 2.
Table 1
Figure PCTKR2013001371-appb-T000001
As shown in Table 1, it may be confirmed that the material according to the present invention had excellent luminescence properties as compared with the material according to the related art. In addition, the organic electroluminescent device using the heteroaromatic cyclic compound according to the present invention as the electron transport layer had an excellent luminescence property and decreased driving current to increase the power efficiency, thereby using less consumption power.

Claims (7)

  1. An electron transport material represented by the following Chemical Formula 1.
    [Chemical Formula 1]
    Figure PCTKR2013001371-appb-I000092
    [In Chemical Formula 1,
    A, B, C, and D each are independently C-(L1)m-Ar1 or N, but two of A, B, C, and D are N, the other two are C-(L1)m-Ar1, and each of -(L1)m-Ar1 are the same as or different from each other, but two -(L1)m-Ar1 are not hydrogen at the same time;
    L is (C1-C20)alkylene or (C2-C20)alkenylene, a carbon atom (-CH2-) of alkylene of L is substituted with a heteroatom selected from NR(R is (C1-C30)alkyl), O, and S, and a carbon atom (=CH-) of alkenylene of L is substituted with N;
    R1 to R4 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
    L1(s) each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
    m is an integer of 1 to 3, and when m is an integer of 2 or more, L1(s) are the same as or different from each other;
    Ar1(s) each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
    alkyl, cycloalkyl, aryl, heteroaryl of R1 to R4, alkylene or alkenylene of L, arylene and heteroarylene of L1, and aryl and heteroaryl of Ar1 are substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)aryl, mono or di(C1-C30)alkylamino, mono or di(C6-C30)arylamino, tri(C1-C30)alkylsilyl, di(C1-C30)alkyl(C6-C30)arylsilyl, tri(C6-C30)arylsilyl, nitro, and hydroxy; and
    heteroarylene and heteroaryl contains at least one hetero atom selected from B, N, O, S, P(=O), Si, and P.
  2. The electron transport material of claim 1, wherein it is represented by the following Chemical Formula 2 or 3.
    [Chemical Formula 2]
    Figure PCTKR2013001371-appb-I000093
    [Chemical Formula 3]
    Figure PCTKR2013001371-appb-I000094
    [In Chemical Formulas 2 and 3,
    R1 to R4 and L each has the same definition in Chemical Formula 1 of claim 1;
    L2 and L3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
    x and y each are independently an integer of 1 to 3, wherein when x is an integer of 2 or more, L2(s) are the same as or different from each other, and when y is an integer of 2 or more, L3(s) are the same as or different from each other;
    Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
    arylene and heteroarylene of L2 and L3, and aryl and heteroaryl of Ar2 and Ar3 are substituted with at least one selected from a group consisting of (C1-C30)alkyl, halo(C1-C30)alkyl, halogen, cyano, (C3-C30)cycloalkyl, (C1-C30)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, (C3-C30)heteroaryl, (C3-C30)heteroaryl substituted with (C1-C30)alkyl, (C3-C30)heteroaryl substituted with (C6-C30)aryl, mono or di(C1-C30)alkylamino, mono or di(C6-C30)arylamino, tri(C1-C30)alkylsilyl, di(C1-C30)alkyl(C6-C30)arylsilyl, tri(C6-C30)arylsilyl, nitro, and hydroxy; and -(L2)x-Ar2 and -(L3)Y-Ar3 are not hydrogen at the same time.]
  3. The electron transport material of claim 2, wherein it is represented by the following Chemical Formulas 4 to 9.
    [Chemical Formula 4]
    Figure PCTKR2013001371-appb-I000095
    [Chemical Formula 5]
    Figure PCTKR2013001371-appb-I000096
    [Chemical Formula 6]
    Figure PCTKR2013001371-appb-I000097
    [Chemical Formula 7]
    Figure PCTKR2013001371-appb-I000098
    [Chemical Formula 8]
    Figure PCTKR2013001371-appb-I000099
    [Chemical Formula 9]
    Figure PCTKR2013001371-appb-I000100
    [In Chemical Formulas 4 to 9,
    R1 to R6 each are independently hydrogen, (C1-C30)alkyl, (C3-C30)cycloalkyl, (C6-C30)aryl, or (C3-C30)heteroaryl;
    L2 and L3 each are independently a single bond, (C6-C30)arylene, or (C3-C30)heteroarylene;
    x is an integer of 1 to 3, and when x is an integer of 2 or more, L2(s) are the same as or different from each other;
    Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, or (C3-C30)heteroaryl; and
    arylene of L2 and L3 and aryl and heteroaryl of Ar2 and Ar3 are further substituted with at least one selected from a group consisting of (C1-C30)alkyl, (C6-C30)aryl, (C6-C30)ar(C1-C30)alkyl, (C1-C30)alkyl(C6-C30)aryl, and (C3-C30)heteroaryl.]
  4. The electron transport material of claim 3, wherein L2 and L3 each are a single bond, phenylene, biphenylene, 9,9-dimethylfluorenylene, naphthylene, anthrylene, pyridinylene, or pyrimidinylene;
    Ar2 and Ar3 each are independently hydrogen, (C1-C30)alkyl, or selected from the following structure; and
    Figure PCTKR2013001371-appb-I000101
    R', R'', and R''' each are independently hydrogen, (C1-C30)alkyl, (C6-C30)aryl, (C3-C30)heteroaryl, or (C1-C30)alkyl(C6-C30)aryl.
  5. The electron transport material of claim 4, wherein it is selected from the following compounds.
    Figure PCTKR2013001371-appb-I000102
    Figure PCTKR2013001371-appb-I000103
    Figure PCTKR2013001371-appb-I000104
    Figure PCTKR2013001371-appb-I000105
    Figure PCTKR2013001371-appb-I000106
    Figure PCTKR2013001371-appb-I000107
    Figure PCTKR2013001371-appb-I000108
    Figure PCTKR2013001371-appb-I000109
    Figure PCTKR2013001371-appb-I000110
    Figure PCTKR2013001371-appb-I000111
    Figure PCTKR2013001371-appb-I000112
    Figure PCTKR2013001371-appb-I000113
    Figure PCTKR2013001371-appb-I000114
  6. An organic electroluminescent device containing the electron transport material of any one of claims 1 to 5.
  7. The organic electroluminescent device of claim 6, wherein it includes:
    a first electrode; a second electrode; and at least one organic layer interposed between the first and second electrodes, the organic layer including an electron transport layer in which the electron transport material is contained.
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