WO2012098849A1 - 置換されたビピリジル基とピリドインドール環構造を有する化合物および有機エレクトロルミネッセンス素子 - Google Patents
置換されたビピリジル基とピリドインドール環構造を有する化合物および有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2012098849A1 WO2012098849A1 PCT/JP2012/000206 JP2012000206W WO2012098849A1 WO 2012098849 A1 WO2012098849 A1 WO 2012098849A1 JP 2012000206 W JP2012000206 W JP 2012000206W WO 2012098849 A1 WO2012098849 A1 WO 2012098849A1
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 111
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 title claims abstract description 33
- IVCGJOSPVGENCT-UHFFFAOYSA-N 1h-pyrrolo[2,3-f]quinoline Chemical group N1=CC=CC2=C(NC=C3)C3=CC=C21 IVCGJOSPVGENCT-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 63
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- 239000012044 organic layer Substances 0.000 claims abstract description 12
- 239000000470 constituent Substances 0.000 claims abstract description 10
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- 230000000903 blocking effect Effects 0.000 claims description 33
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 22
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 22
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 125000001424 substituent group Chemical group 0.000 claims description 11
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 9
- 229910052805 deuterium Inorganic materials 0.000 claims description 9
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
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- 230000015572 biosynthetic process Effects 0.000 description 3
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 3
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- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 3
- NTKDNCICORVTES-UHFFFAOYSA-M 1-naphthalen-2-yl-2-pyridin-1-ium-1-ylethanone;iodide Chemical compound [I-].C=1C=C2C=CC=CC2=CC=1C(=O)C[N+]1=CC=CC=C1 NTKDNCICORVTES-UHFFFAOYSA-M 0.000 description 2
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 2
- AJKVQEKCUACUMD-UHFFFAOYSA-N 2-Acetylpyridine Chemical compound CC(=O)C1=CC=CC=N1 AJKVQEKCUACUMD-UHFFFAOYSA-N 0.000 description 2
- IWOLQJJBKQOFBB-UHFFFAOYSA-N 4-(4-bromophenyl)-2-naphthalen-2-yl-6-pyridin-2-ylpyridine Chemical compound C1=CC(Br)=CC=C1C1=CC(C=2C=C3C=CC=CC3=CC=2)=NC(C=2N=CC=CC=2)=C1 IWOLQJJBKQOFBB-UHFFFAOYSA-N 0.000 description 2
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 2
- BUMRSVKXWKUSSF-UHFFFAOYSA-N 8-[4-(2-naphthalen-2-yl-6-pyridin-2-ylpyridin-4-yl)phenyl]-5-phenylpyrido[4,3-b]indole Chemical compound C1=CC=CC=C1N1C2=CC=C(C=3C=CC(=CC=3)C=3C=C(N=C(C=3)C=3C=C4C=CC=CC4=CC=3)C=3N=CC=CC=3)C=C2C2=CN=CC=C21 BUMRSVKXWKUSSF-UHFFFAOYSA-N 0.000 description 2
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- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 2
- 125000004062 acenaphthenyl group Chemical group C1(CC2=CC=CC3=CC=CC1=C23)* 0.000 description 2
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- 125000001164 benzothiazolyl group Chemical group S1C(=NC2=C1C=CC=C2)* 0.000 description 2
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- 125000000319 biphenyl-4-yl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 2
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- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- ZBELDPMWYXDLNY-UHFFFAOYSA-N methyl 9-(4-bromo-2-fluoroanilino)-[1,3]thiazolo[5,4-f]quinazoline-2-carboximidate Chemical compound C12=C3SC(C(=N)OC)=NC3=CC=C2N=CN=C1NC1=CC=C(Br)C=C1F ZBELDPMWYXDLNY-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- YGBMCLDVRUGXOV-UHFFFAOYSA-N n-[6-[6-chloro-5-[(4-fluorophenyl)sulfonylamino]pyridin-3-yl]-1,3-benzothiazol-2-yl]acetamide Chemical compound C1=C2SC(NC(=O)C)=NC2=CC=C1C(C=1)=CN=C(Cl)C=1NS(=O)(=O)C1=CC=C(F)C=C1 YGBMCLDVRUGXOV-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- IOMMMLWIABWRKL-WUTDNEBXSA-N nazartinib Chemical compound C1N(C(=O)/C=C/CN(C)C)CCCC[C@H]1N1C2=C(Cl)C=CC=C2N=C1NC(=O)C1=CC=NC(C)=C1 IOMMMLWIABWRKL-WUTDNEBXSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- PIDFDZJZLOTZTM-KHVQSSSXSA-N ombitasvir Chemical compound COC(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@H]1C(=O)NC1=CC=C([C@H]2N([C@@H](CC2)C=2C=CC(NC(=O)[C@H]3N(CCC3)C(=O)[C@@H](NC(=O)OC)C(C)C)=CC=2)C=2C=CC(=CC=2)C(C)(C)C)C=C1 PIDFDZJZLOTZTM-KHVQSSSXSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- XEXYATIPBLUGSF-UHFFFAOYSA-N phenanthro[9,10-b]pyridine-2,3,4,5,6,7-hexacarbonitrile Chemical group N1=C(C#N)C(C#N)=C(C#N)C2=C(C(C#N)=C(C(C#N)=C3)C#N)C3=C(C=CC=C3)C3=C21 XEXYATIPBLUGSF-UHFFFAOYSA-N 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- BJDYCCHRZIFCGN-UHFFFAOYSA-N pyridin-1-ium;iodide Chemical compound I.C1=CC=NC=C1 BJDYCCHRZIFCGN-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- GRONZTPUWOOUFQ-UHFFFAOYSA-M sodium;methanol;hydroxide Chemical compound [OH-].[Na+].OC GRONZTPUWOOUFQ-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- C07D401/14—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 three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- H—ELECTRICITY
- 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
-
- H—ELECTRICITY
- 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]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
-
- 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
-
- H—ELECTRICITY
- 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]
- H10K50/18—Carrier blocking layers
Definitions
- the present invention relates to a compound suitable for an organic electroluminescence element (hereinafter abbreviated as an organic EL element) which is a self-luminous element suitable for various display devices, and an organic EL element using the compound.
- an organic EL element an organic electroluminescence element
- organic EL elements are self-luminous elements, they have been actively researched because they are brighter and more visible than liquid crystal elements and are capable of clear display.
- Non-Patent Document 1 To date, many improvements have been made for practical application of organic EL devices, and various roles have been further subdivided, and sequentially on the substrate, anode, hole injection layer, hole transport layer, light emitting layer, electron transport High efficiency and durability are achieved by an electroluminescent element provided with a layer, an electron injection layer, and a cathode (see, for example, Non-Patent Document 1).
- Non-Patent Document 2 the use of triplet excitons has been attempted for the purpose of further improving the luminous efficiency, and the use of phosphorescent emitters has been studied (for example, see Non-Patent Document 2).
- the light emitting layer can also be prepared by doping a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- the light injected from both electrodes is recombined in the light emitting layer to obtain light emission.
- the hole moving speed is faster than the electron moving speed, some of the holes pass through the light emitting layer. There is a problem of efficiency reduction due to passing through. Therefore, an electron transport material having a high electron moving speed is demanded.
- Tris (8-hydroxyquinoline) aluminum (hereinafter abbreviated as Alq 3 ), which is a typical luminescent material, is generally used as an electron transport material, but has a low electron mobility and a work function of 5 The hole blocking performance is not sufficient because of .6 eV.
- a method for preventing a part of holes from passing through the light emitting layer and improving the probability of charge recombination in the light emitting layer is to insert a hole blocking layer.
- a hole blocking material triazole derivatives (for example, refer to Patent Document 3), bathocuproine (hereinafter abbreviated as BCP), mixed ligand complexes of aluminum [aluminum (III) bis (2-methyl-8) -Quinolinato) -4-phenylphenolate (hereinafter abbreviated as BAlq)] (for example, see Non-Patent Document 2).
- TAZ 3- (4-biphenylyl) -4-phenyl-5- (4-t-butylphenyl) -1,2,4-triazole
- TAZ has a large work function of 6.6 eV and high hole blocking ability
- an electron transporting hole blocking layer laminated on the cathode side of a fluorescent light emitting layer or phosphorescent light emitting layer produced by vacuum deposition or coating contributes to high efficiency of the organic EL element (see, for example, Non-Patent Document 3).
- BCP also has a high work function of 6.7 eV and a high hole blocking ability, but its glass transition point (Tg) is as low as 83 ° C., so that the stability of the thin film is poor and it functions sufficiently as a hole blocking layer. I can't say that.
- JP-A-8-48656 Japanese Patent No. 3194657 Japanese Patent No. 2734341 WO2003 / 060956
- the physical properties that the organic compound to be provided by the present invention should have include (1) good electron injection properties, (2) fast electron transfer speed, and (3) hole blocking ability. It can be mentioned that it is excellent, (4) the thin film state is stable, and (5) it is excellent in heat resistance. Further, the physical characteristics to be provided by the organic EL element to be provided by the present invention are (1) high luminous efficiency and power efficiency, (2) low emission start voltage, and (3) practical driving. It can be mentioned that the voltage is low.
- the present inventors have the ability to coordinate the nitrogen atom of the pyridine ring, which is electron affinity, to the metal, and the pyridoindole ring structure has a high electron transport ability.
- a compound in which a substituted bipyridyl group and a pyridoindole ring structure are linked via a phenylene group focusing on the fact that the pyridine ring and the pyridoindole ring structure are excellent in heat resistance.
- the present invention is a compound in which a substituted bipyridyl group represented by the general formula (1) and a pyridoindole ring structure are linked via a phenylene group.
- Ar 1 and Ar 2 may be the same or different and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- R 1 to R 17 may be the same or different and are a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched group having 1 to 6 carbon atoms
- the present invention is a compound in which a substituted bipyridyl group represented by the following general formula (1 ') and a pyridoindole ring structure are linked via a phenylene group.
- Ar 1 and Ar 2 may be the same or different and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- R 1 to R 17 may be the same or different and are a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched group having 1 to 6 carbon atoms
- the present invention is a compound in which a substituted bipyridyl group represented by the following general formula (1 ′′) and a pyridoindole ring structure are connected via a phenylene group.
- Ar 1, Ar 2 may be the same or different, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group
- R 1 to R 17 may be the same or different and are a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched group having 1 to 6 carbon atoms
- W, X, Y, and Z are carbon atoms.
- organic EL device having a pair of electrodes and at least one organic layer sandwiched therebetween, at least one of the organic layers is represented by the general formula (1), the general formula (1 ′), or the general formula.
- An organic EL device comprising a compound in which a substituted bipyridyl group represented by (1 ′′) and a pyridoindole ring structure are linked via a phenylene group.
- Substituted or unsubstituted aromatic hydrocarbon group represented by Ar 1 or Ar 2 in the general formula (1), (1 ') or (1 "),” substituted or unsubstituted aromatic complex
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” of the “ring group” or “substituted or unsubstituted condensed polycyclic aromatic group” is specifically a phenyl group , Biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl group, naphthyl group, anthryl group, acenaphthenyl group, phenanthryl group, fluorenyl group, indenyl group, pyrenyl group, pyridyl group, triazyl group, pyrimidyl group, furanyl group, pyronyl group, Thienyl, quinolyl, isoquinolyl, be
- Specific examples of the “substituent” in the “ring aromatic group” include a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a hydroxyl group, a nitro group, a straight chain having 1 to 6 carbon atoms or Dialkyl substituted with a branched alkyl group, a cyclopentyl group, a cyclohexyl group, a linear or branched alkoxy group having 1 to 6 carbon atoms, or a linear or branched alkyl group having 1 to 6 carbon atoms
- Examples include amino groups, phenyl groups, naphthyl groups, anthryl groups, fluorenyl groups,
- Ar 1 in the general formula (1), (1 ′) or (1 ′′) is “substituted or unsubstituted aromatic hydrocarbon group” or “substituted or unsubstituted condensed polycyclic aromatic group”. Particularly preferred is a substituted or unsubstituted phenyl group, naphthyl group, anthryl group or fluorenyl group.
- Ar 2 in the general formula (1), (1 ′) or (1 ′′) a “substituted or unsubstituted aromatic hydrocarbon group” is preferable, and a substituted or unsubstituted phenyl group is particularly preferable.
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” of the “ring group” or “substituted or unsubstituted condensed polycyclic aromatic group” is specifically a phenyl group , Biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl group, naphthyl group, anthryl group, acenaphthenyl group, phenanthryl group, fluorenyl group, indenyl group, pyrenyl group, pyridyl group, triazyl group, pyrimidyl group, furanyl group, pyronyl group, Thienyl, quinolyl, isoquino
- substituted or unsubstituted aromatic heterocyclic group represented by R 1 to R 4
- a substituted or unsubstituted pyridyl group is preferable, and an improvement in electron injection characteristics can be expected.
- substituted aromatic hydrocarbon group “substituted aromatic heterocyclic group” or “substituted condensed polyvalent group” represented by R 1 to R 17 in the general formula (1), (1 ′) or (1 ′′)
- substituted condensed polyvalent group represented by R 1 to R 17 in the general formula (1), (1 ′) or (1 ′′)
- substituents in the “ring aromatic group” include a deuterium atom, a fluorine atom, a chlorine atom, a trifluoromethyl group, a linear or branched alkyl group having 1 to 6 carbon atoms, and a phenyl group.
- Biphenylyl group, terphenylyl group, tetrakisphenyl group, styryl group, naphthyl group, fluorenyl group, phenanthryl group, indenyl group, pyrenyl group, pyridoindolyl group, and these substituents are further substituted. May be.
- Examples of the “linear or branched alkyl group having 1 to 6 carbon atoms” represented by R 1 to R 17 in the general formula (1), (1 ′) or (1 ′′) include In particular, methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, t-butyl group, n-pentyl group, i-pentyl group, t-pentyl group, n- Examples thereof include hexyl group, i-hexyl group and t-hexyl group.
- bipyridyl group in a compound represented by the general formula (1), (1 ′) or (1 ′′) of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are linked via a phenylene group From the viewpoint of properties, a [2,3 ′] bipyridyl group is preferred.
- the compound represented by the general formula (1), (1 ′) or (1 ′′) of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are linked via a phenylene group is a novel compound.
- the electron transfer is faster than that of the conventional electron transport material, has an excellent hole blocking capability, and is stable in a thin film state.
- the compound represented by the general formula (1), (1 ′) or (1 ′′) of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are connected via a phenylene group is an organic EL device. It can be used as a constituent material of an electron injection layer and / or an electron transport layer. By using a material having a higher electron injection / movement speed than conventional materials, the electron transport efficiency from the electron transport layer to the light emitting layer is improved, the light emission efficiency is improved, and the driving voltage is lowered, It has the effect
- the compound represented by the general formula (1), (1 ′) or (1 ′′) of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are connected via a phenylene group is an organic EL device. It can also be used as a constituent material for the hole blocking layer. By using a material with excellent hole-blocking ability and electron transportability compared to conventional materials and high stability in the thin film state, the driving voltage is lowered and current resistance is maintained while having high luminous efficiency. Is improved and the maximum light emission luminance of the organic EL element is improved.
- the compound represented by the general formula (1), (1 ′) or (1 ′′) of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are connected via a phenylene group is an organic EL device. It can also be used as a constituent material of the light emitting layer.
- a fluorescent light emitting material or a phosphorescent light emitting material called a dopant is supported, and the light emitting layer As a result, it is possible to realize an organic EL element with reduced driving voltage and improved luminous efficiency.
- the organic EL device of the present invention has a substituted bipyridyl group and a pyridoindole ring structure, which has faster electron transfer than conventional electron transport materials, excellent hole blocking ability, and stable thin film state. Since a compound linked via a phenylene group is used, high efficiency and high durability can be realized.
- the compound in which a substituted bipyridyl group and a pyridoindole ring structure of the present invention are connected via a phenylene group is useful as a constituent material of an electron injection layer, an electron transport layer, a hole blocking layer, or a light emitting layer of an organic EL device. Yes, excellent hole blocking ability and stable thin film state.
- the organic EL device of the present invention has high luminous efficiency and high power efficiency, which can reduce the practical driving voltage of the device. The emission start voltage can be lowered and the durability can be improved.
- FIG. 1 is a 1 H-NMR chart of the compound of Example 1 of the present invention (Compound 2).
- FIG. 2 is a 1 H-NMR chart of the compound of Example 2 of the present invention (Compound 8).
- FIG. 5 is a diagram showing EL element configurations of Examples 5 to 6 and Comparative Example 1.
- the compound in which the substituted bipyridyl group and pyridoindole ring structure of the present invention are connected via a phenylene group is a novel compound, and these compounds can be synthesized, for example, as follows.
- a corresponding pyridoindole derivative is synthesized by subjecting the corresponding halogenoanilinopyridine to a cyclization reaction with a palladium catalyst (see, for example, Non-Patent Document 5), and various aromatic hydrocarbon compounds, condensed polycyclic aromatics.
- a pyridoindole derivative in which the corresponding 5-position is substituted with an aryl group can be synthesized by performing a condensation reaction such as a Ullmann reaction or a Buchward-Hartwig reaction with a halide of an aromatic compound or aromatic heterocyclic compound.
- halogenophenylenes having a bipyridyl group can be synthesized by condensing a corresponding aldehyde and acetylpyridine in the presence of a base and further reacting with a corresponding pyridinium iodide (for example, non-patented). Reference 8).
- melting point is an index of vapor deposition
- glass transition point (Tg) is an index of stability in a thin film state
- work function is an index of hole blocking ability
- Tg Melting point and glass transition point (Tg) were measured with a high sensitivity differential scanning calorimeter (Bruker AXS, DSC3100S) using powder.
- the work function was measured using an atmospheric photoelectron spectrometer (AC-3 type, manufactured by Riken Keiki Co., Ltd.) by forming a 100 nm thin film on the ITO substrate.
- an anode, a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layer, and a cathode are sequentially formed on the substrate, and the anode and the hole transport layer Examples include those having a hole injection layer between them, those having an electron injection layer between the electron transport layer and the cathode, and those having an electron blocking layer between the light emitting layer and the hole transport layer.
- the anode and the hole transport layer examples include those having a hole injection layer between them, those having an electron injection layer between the electron transport layer and the cathode, and those having an electron blocking layer between the light emitting layer and the hole transport layer.
- a structure having an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode sequentially on a substrate may be used. it can.
- the light emitting layer, the hole transport layer, and the electron transport layer may have a structure in which two or more layers are laminated.
- an electrode material having a large work function such as ITO or gold is used.
- a hole injection layer of the organic EL device of the present invention in addition to a porphyrin compound typified by copper phthalocyanine, a starburst type triphenylamine derivative, three or more triphenylamine structures in the molecule, single bond or heteroatom
- triphenylamine trimers and tetramers such as arylamine compounds having a structure linked by a divalent group not containing an acceptor, acceptor heterocyclic compounds such as hexacyanoazatriphenylene, and coating-type polymer materials Can do.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- N, N′-diphenyl-N, N′-di (m-tolyl) -benzidine (hereinafter abbreviated as TPD) or N, N′-diphenyl-N , N′-di ( ⁇ -naphthyl) -benzidine (hereinafter abbreviated as NPD)
- TPD N, N′-diphenyl-N , N′-di ( ⁇ -naphthyl) -benzidine
- NPD benzidine derivatives such as N, N, N ′, N′-tetrabiphenylylbenzidine, 1,1-bis [(di-4 -Tolylamino) phenyl] cyclohexane
- TAPC 1,1-bis [(di-4 -Tolylamino) phenyl] cyclohexane
- PEDOT poly (3,4-ethylenedioxythiophene)
- PSS poly (styrene sulfonate)
- a material that is usually used for the layer is further P-doped with trisbromophenylamine hexachloroantimony or the like, or a TPD structure having a partial structure. Molecular compounds and the like can be used.
- TCTA 4,4 ′, 4 ′′ -tri (N-carbazolyl) triphenylamine
- TCTA 9,9-bis [4- (carbazole- 9-yl) phenyl] fluorene
- mCP 1,3-bis (carbazol-9-yl) benzene
- Ad 2,2-bis (4-carbazol-9-ylphenyl) adamantane
- Carbazole derivatives such as 9- [4- (carbazol-9-yl) phenyl] -9- [4- (triphenylsilyl) phenyl] -9H-fluorene
- a compound having an electron blocking action such as a compound having a triarylamine structure can be used.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- a metal complex of a quinolinol derivative such as Alq 3
- metal complexes, anthracene derivatives, bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, polyparaphenylene vinylene derivatives, and the like can be used.
- the light emitting layer may be composed of a host material and a dopant material, and in addition to the light emitting material, a thiazole derivative, a benzimidazole derivative, a polydialkylfluorene derivative, or the like can be used as the host material.
- a dopant material quinacridone, coumarin, rubrene, perylene, and derivatives thereof, benzopyran derivatives, rhodamine derivatives, aminostyryl derivatives, and the like can be used. These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- a phosphorescent light emitting material can be used as the light emitting material.
- a phosphorescent emitter of a metal complex such as iridium or platinum can be used.
- Green phosphorescent emitters such as Ir (ppy) 3
- blue phosphorescent emitters such as FIrpic and FIr6, red phosphorescent emitters such as Btp 2 Ir (acac), and the like are used as host materials.
- As the hole injecting / transporting host material carbazole derivatives such as 4,4′-di (N-carbazolyl) biphenyl (hereinafter abbreviated as CBP), TCTA, mCP, and the like can be used.
- p-bis (triphenylsilyl) benzene (hereinafter abbreviated as UGH2) or 2,2 ′, 2 ′′-(1,3,5-phenylene) -tris (1-phenyl) -1H-benzimidazole) (hereinafter abbreviated as TPBI) and the like can be used.
- the phosphorescent light-emitting material into the host material by co-evaporation in the range of 1 to 30 weight percent with respect to the entire light-emitting layer.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- the hole blocking layer of the organic EL device of the present invention in addition to the compound in which the substituted bipyridyl group and pyridoindole ring structure of the present invention are linked via a phenylene group, bathocuproine (hereinafter abbreviated as BCP), etc.
- BCP bathocuproine
- metal complexes of phenanthroline derivatives and quinolinol derivatives such as BAlq
- various rare earth complexes, oxazole derivatives, triazole derivatives, and triazine derivatives can be used. These materials may also serve as the material for the electron transport layer.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- organic EL device of the present invention in addition to the compound of the present invention in which a substituted bipyridyl group and a pyridoindole ring structure are linked via a phenylene group, metals of quinolinol derivatives including Alq 3 and BAlq
- metal complexes triazole derivatives, triazine derivatives, oxadiazole derivatives, thiadiazole derivatives, carbodiimide derivatives, quinoxaline derivatives, phenanthroline derivatives, silole derivatives, and the like can be used.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- an alkali metal salt such as lithium fluoride and cesium fluoride as well as a compound in which the substituted bipyridyl group and pyridoindole ring structure of the present invention are connected via a phenylene group
- Alkaline earth metal salts such as magnesium fluoride and metal oxides such as aluminum oxide can be used, but this can be omitted in the preferred selection of the electron transport layer and the cathode.
- a material usually used for the layer can be further doped with a metal such as cesium by N doping.
- an electrode material having a low work function such as aluminum or an alloy having a lower work function such as a magnesium silver alloy, a magnesium indium alloy, or an aluminum magnesium alloy is used as the electrode material.
- the compound of the present invention has a glass transition point of 100 ° C. or higher. This indicates that the thin film state is stable in the compound of the present invention.
- the compound of the present invention has a value deeper than the work function 5.4 eV of a general hole transport material such as NPD or TPD, and has a large hole blocking ability.
- the organic EL element has a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, and a hole blocking layer on a glass substrate 1 on which an ITO electrode is previously formed as a transparent anode 2.
- the layer 6, the electron transport layer 7, the electron injection layer 8, and the cathode (aluminum electrode) 9 were deposited in this order.
- the glass substrate 1 on which ITO with a film thickness of 150 nm was formed was washed with an organic solvent, the surface was washed by oxygen plasma treatment. Then, this glass substrate with an ITO electrode was mounted in a vacuum vapor deposition machine and the pressure was reduced to 0.001 Pa or less. Subsequently, as a hole injection layer 3 so as to cover the transparent anode 2, a compound 102 having the following structural formula was formed at a deposition rate of 6 nm / min so as to have a film thickness of 20 nm.
- a compound 103 having the following structural formula was formed as the hole transport layer 4 so as to have a film thickness of 40 nm at a deposition rate of 6 nm / min.
- the compound of Example 1 of the present invention (Compound 2) was formed as a hole blocking layer / electron transport layer 6 and 7 so as to have a film thickness of 30 nm at a deposition rate of 6 nm / min.
- lithium fluoride was formed as the electron injection layer 8 so as to have a film thickness of 0.5 nm at a deposition rate of 0.6 nm / min. Finally, aluminum was deposited to a thickness of 150 nm to form the cathode 9. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 5 As a material of the hole blocking layer / electron transport layers 6 and 7 in Example 5, the compound of Example 1 of the present invention (Compound 2) is replaced with the compound of Example 2 of the present invention (Compound 8).
- the organic EL element was produced under the conditions described above. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 1 For comparison, the material of the hole blocking layer / electron transport layers 6 and 7 in Example 5 is replaced with the compound 106 (see, for example, Patent Document 4) of the following structural formula as the electron transport layer 7, and An organic EL element was produced under the same conditions. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- the driving voltage at a current density of 10 mA / cm 2 was 4.33 V in Example 5 versus 5.95 V in Comparative Example 1 using Compound 106 of the structural formula, and in Example 6 The voltage was lowered to 5.24 V, and the brightness, light emission efficiency, and power efficiency at a current density of 10 mA / cm 2 were greatly improved.
- the organic EL device of the present invention is superior in luminous efficiency and power efficiency as compared with a device using the compound 106 of the structural formula used as a general electron transporting material. It has been found that a significant reduction in drive voltage can be achieved.
- the compound in which the substituted bipyridyl group and the pyridoindole ring structure of the present invention are connected via a phenylene group has good electron injection characteristics, excellent hole blocking ability, and a stable thin film state. It is excellent as a compound for EL devices. By producing an organic EL element using the compound, high efficiency can be obtained, driving voltage can be lowered, and durability can be improved. For example, it has become possible to develop home appliances and lighting.
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Abstract
Description
一般式(1)、(1’)または(1’’)中のAr2としては、「置換もしくは無置換の芳香族炭化水素基」が好ましく、特に、置換もしくは無置換のフェニル基が好ましい。
ここで、R1~R4で表される、「置換もしくは無置換の芳香族複素環基」として、置換もしくは無置換のピリジル基が好ましく、電子注入特性の向上が期待できる。
反応容器に2’-アセトナフトン16.1g、ヨウ素24.2g、ピリジン72mlを加えて加熱し、100℃で3時間攪拌した。室温まで冷却し、水170mlを加えた後、再結晶による精製を行った。70℃で12時間減圧乾燥することによって、1-{2-(ナフタレン-2-イル)-2-オキソエチル}ピリジニウムヨウ化物31.3g(収率88%)の褐色粉体を得た。
実施例1と同様に行って、4-アセチルビフェニルから6-(ビフェニル-4-イル)-4-(4-ブロモフェニル)-[2,2’]ビピリジンを合成した。得られた6-(ビフェニル-4-イル)-4-(4-ブロモフェニル)-[2,2’]ビピリジン3.7g、8-ブロモ-5-フェニル-5H-ピリド[4,3-b]インドール3.3g、テトラキス(トリフェニルホスフィン)パラジウム(0)0.3g、2M炭酸カリウム水溶液12ml、トルエン30ml、エタノール7mlを窒素置換した反応容器に加え、攪拌しながら3時間加熱還流した。室温まで冷却し、析出する粗製物をろ過によって採取した。粗製物をカラムクロマトグラフ(担体:NHシリカゲル、溶離液:トルエン)によって精製し、8-[4-{6-(ビフェニル-4-イル)-[2,2’]ビピリジニル-4-イル}-フェニル]-5-フェニル-5H-ピリド[4,3-b]インドール(化合物8)1.7g(収率34%)の白色粉体を得た。
融点 ガラス転移点
本発明実施例1の化合物 255℃ 122℃
本発明実施例2の化合物 246℃ 128℃
仕事関数
本発明実施例1の化合物 6.06eV
本発明実施例2の化合物 6.15eV
作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例5における正孔阻止層兼電子輸送層6および7の材料を電子輸送層7としての下記構造式の化合物106(例えば、特許文献4参照)に代え、実施例5と同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
有機EL素子 化合物 発光開始電圧[V]
実施例5 化合物2 2.7
実施例6 化合物8 2.9
比較例1 化合物106 3.1
その結果、前記構造式の化合物106を使用した比較例1に対し、実施例5および6では発光開始電圧を低電圧化していることが分かる。
2 透明陽極
3 正孔注入層
4 正孔輸送層
5 発光層
6 正孔阻止層
7 電子輸送層
8 電子注入層
9 陰極
Claims (8)
- 下記一般式(1)で表される、置換されたビピリジル基とピリドインドール環構造がフェニレン基を介して連結した化合物。
(式中、Ar1、Ar2は同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、R1~R17は、同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、W、X、Y、Zは炭素原子または窒素原子を表す。ここでW、X、Y、Zはそのいずれか1つのみが窒素原子であるものとし、この場合の窒素原子はR14~R17の水素原子もしくは置換基を有さないものとする。) - 下記一般式(1’)で表される、請求項1記載の置換されたビピリジル基とピリドインドール環構造がフェニレン基を介して連結した化合物。
(式中、Ar1、Ar2は同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、R1~R17は、同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、W、X、Y、Zは炭素原子または窒素原子を表す。ここでW、X、Y、Zはそのいずれか1つのみが窒素原子であるものとし、この場合の窒素原子はR14~R17の水素原子もしくは置換基を有さないものとする。) - 下記一般式(1’’)で表される、請求項1記載の置換されたビピリジル基とピリドインドール環構造がフェニレン基を介して連結した化合物。
(式中、Ar1、Ar2は同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、R1~R17は、同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、W、X、Y、Zは炭素原子または窒素原子を表す。ここでW、X、Y、Zはそのいずれか1つのみが窒素原子であるものとし、この場合の窒素原子はR14~R17の水素原子もしくは置換基を有さないものとする。) - 一対の電極とその間に挟まれた少なくとも一層の有機層を有する有機エレクトロルミネッセンス素子において、下記一般式(1)で表される置換されたビピリジル基とピリドインドール環構造がフェニレン基を介して連結した化合物が、少なくとも1つの有機層の構成材料として用いられていることを特徴とする有機エレクトロルミネッセンス素子。
(式中、Ar1、Ar2は同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、R1~R17は、同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表し、W、X、Y、Zは炭素原子または窒素原子を表す。ここでW、X、Y、Zはそのいずれか1つのみが窒素原子であるものとし、この場合の窒素原子はR14~R17の水素原子もしくは置換基を有さないものとする。) - 前記した有機層が電子輸送層であり、上記一般式(1)で表される化合物が、該電子輸送層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項4記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が正孔阻止層であり、上記一般式(1)で表される化合物が、該正孔阻止層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項4記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が発光層であり、上記一般式(1)で表される化合物が、該発光層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項4記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が電子注入層であり、上記一般式(1)で表される化合物が、該電子注入層中に、少なくとも一つの構成材料として用いられていることを特徴とする請求項4記載の有機エレクトロルミネッセンス素子。
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JP2012553608A JP5955228B2 (ja) | 2011-01-18 | 2012-01-16 | 置換されたビピリジル基とピリドインドール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
EP12736240.8A EP2669284B1 (en) | 2011-01-18 | 2012-01-16 | Compound having pyridoindole ring structure and substituted bipyridyl group, and organic electroluminescent element |
CN2012800057761A CN103328475A (zh) | 2011-01-18 | 2012-01-16 | 具有被取代的联吡啶基和吡啶并吲哚环结构的化合物以及有机电致发光器件 |
US13/979,746 US10541369B2 (en) | 2011-01-18 | 2012-01-16 | Compound having substituted bipyridyl group and pyridoinodole ring structure, and organic electroluminescent device |
KR1020137021548A KR101966468B1 (ko) | 2011-01-18 | 2012-01-16 | 치환된 비피리딜기와 피리도인돌환 구조를 가지는 화합물 및 유기 일렉트로루미네센스 소자 |
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CN111718341A (zh) * | 2020-07-10 | 2020-09-29 | 北京燕化集联光电技术有限公司 | 一种含有咔唑环的化合物及其在有机电致发光器件中的应用 |
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CN111825671A (zh) * | 2020-07-10 | 2020-10-27 | 北京燕化集联光电技术有限公司 | 一种含咔唑环化合物及其应用 |
CN111825697A (zh) * | 2020-07-10 | 2020-10-27 | 北京燕化集联光电技术有限公司 | 一种含咔唑环的化合物及其应用 |
CN111718342B (zh) * | 2020-07-10 | 2021-08-17 | 北京燕化集联光电技术有限公司 | 一种新型有机材料及其应用 |
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- 2012-01-16 CN CN2012800057761A patent/CN103328475A/zh active Pending
- 2012-01-16 EP EP12736240.8A patent/EP2669284B1/en not_active Not-in-force
- 2012-01-16 WO PCT/JP2012/000206 patent/WO2012098849A1/ja active Application Filing
- 2012-01-16 US US13/979,746 patent/US10541369B2/en not_active Expired - Fee Related
- 2012-01-16 KR KR1020137021548A patent/KR101966468B1/ko active IP Right Grant
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Cited By (3)
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WO2014065236A1 (ja) * | 2012-10-22 | 2014-05-01 | コニカミノルタ株式会社 | 透明電極、電子デバイスおよび有機エレクトロルミネッセンス素子 |
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CN111718341A (zh) * | 2020-07-10 | 2020-09-29 | 北京燕化集联光电技术有限公司 | 一种含有咔唑环的化合物及其在有机电致发光器件中的应用 |
Also Published As
Publication number | Publication date |
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TW201245191A (en) | 2012-11-16 |
US10541369B2 (en) | 2020-01-21 |
JP5955228B2 (ja) | 2016-07-20 |
JPWO2012098849A1 (ja) | 2014-06-09 |
US20130292663A1 (en) | 2013-11-07 |
KR20140014135A (ko) | 2014-02-05 |
EP2669284B1 (en) | 2016-03-30 |
EP2669284A1 (en) | 2013-12-04 |
CN103328475A (zh) | 2013-09-25 |
KR101966468B1 (ko) | 2019-04-05 |
TWI542586B (zh) | 2016-07-21 |
EP2669284A4 (en) | 2014-06-11 |
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