WO2007007553A1 - ビフェニル誘導体、有機エレクトロルミネッセンス素子用材料、及びそれを用いた有機エレクトロルミネッセンス素子 - Google Patents
ビフェニル誘導体、有機エレクトロルミネッセンス素子用材料、及びそれを用いた有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2007007553A1 WO2007007553A1 PCT/JP2006/312884 JP2006312884W WO2007007553A1 WO 2007007553 A1 WO2007007553 A1 WO 2007007553A1 JP 2006312884 W JP2006312884 W JP 2006312884W WO 2007007553 A1 WO2007007553 A1 WO 2007007553A1
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- 239000000463 material Substances 0.000 title claims abstract description 60
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical class C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 title claims abstract description 46
- -1 anthracen-9-yl Chemical group 0.000 claims abstract description 293
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims abstract description 37
- 239000010409 thin film Substances 0.000 claims abstract description 19
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 15
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 13
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 112
- 125000003118 aryl group Chemical group 0.000 claims description 38
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- 239000000126 substance Substances 0.000 claims description 28
- 125000003545 alkoxy group Chemical group 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 16
- 125000004104 aryloxy group Chemical group 0.000 claims description 15
- 125000004429 atom Chemical group 0.000 claims description 14
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 13
- 125000005843 halogen group Chemical group 0.000 claims description 11
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- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 10
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 8
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 125000001725 pyrenyl group Chemical group 0.000 claims description 8
- 125000005577 anthracene group Chemical group 0.000 claims description 7
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 7
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 6
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- 230000015572 biosynthetic process Effects 0.000 description 19
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 18
- 125000001424 substituent group Chemical group 0.000 description 18
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- 125000005956 isoquinolyl group Chemical group 0.000 description 10
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- 208000035193 Ring chromosome 10 syndrome Diseases 0.000 description 9
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- 125000000623 heterocyclic group Chemical group 0.000 description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 description 9
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 9
- ADDZHRRCUWNSCS-UHFFFAOYSA-N 2-Benzofurancarboxaldehyde Chemical group C1=CC=C2OC(C=O)=CC2=C1 ADDZHRRCUWNSCS-UHFFFAOYSA-N 0.000 description 8
- 208000033641 Ring chromosome 5 syndrome Diseases 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
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- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 7
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- MNCMBBIFTVWHIP-UHFFFAOYSA-N 1-anthracen-9-yl-2,2,2-trifluoroethanone Chemical group C1=CC=C2C(C(=O)C(F)(F)F)=C(C=CC=C3)C3=CC2=C1 MNCMBBIFTVWHIP-UHFFFAOYSA-N 0.000 description 6
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
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- 230000008021 deposition Effects 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
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- 229910052757 nitrogen Inorganic materials 0.000 description 6
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
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- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 5
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
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- 125000001072 heteroaryl group Chemical group 0.000 description 5
- 125000001041 indolyl group Chemical group 0.000 description 5
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 5
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 229910001508 alkali metal halide Inorganic materials 0.000 description 4
- 150000008045 alkali metal halides Chemical class 0.000 description 4
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 description 4
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 125000002078 anthracen-1-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([*])=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 4
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- 230000000052 comparative effect Effects 0.000 description 4
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- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 150000001342 alkaline earth metals Chemical class 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 150000001454 anthracenes Chemical class 0.000 description 3
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- OJQHQVABFZSWKK-UHFFFAOYSA-N chrysene-1-carbaldehyde Chemical group C1=CC2=C3C=CC=CC3=CC=C2C2=C1C(C=O)=CC=C2 OJQHQVABFZSWKK-UHFFFAOYSA-N 0.000 description 3
- 150000004696 coordination complex Chemical class 0.000 description 3
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- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 3
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
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- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- RDOWQLZANAYVLL-UHFFFAOYSA-N phenanthridine Chemical group C1=CC=C2C3=CC=CC=C3C=NC2=C1 RDOWQLZANAYVLL-UHFFFAOYSA-N 0.000 description 3
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- MWEKPLLMFXIZOC-UHFFFAOYSA-N pyren-1-ylboronic acid Chemical compound C1=C2C(B(O)O)=CC=C(C=C3)C2=C2C3=CC=CC2=C1 MWEKPLLMFXIZOC-UHFFFAOYSA-N 0.000 description 3
- 229910052701 rubidium Inorganic materials 0.000 description 3
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- UWRZIZXBOLBCON-VOTSOKGWSA-N (e)-2-phenylethenamine Chemical class N\C=C\C1=CC=CC=C1 UWRZIZXBOLBCON-VOTSOKGWSA-N 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
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- BRSRUYVJULRMRQ-UHFFFAOYSA-N 1-phenylanthracene Chemical class C1=CC=CC=C1C1=CC=CC2=CC3=CC=CC=C3C=C12 BRSRUYVJULRMRQ-UHFFFAOYSA-N 0.000 description 2
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- 125000000389 2-pyrrolyl group Chemical group [H]N1C([*])=C([H])C([H])=C1[H] 0.000 description 2
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- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 125000002462 isocyano group Chemical group *[N+]#[C-] 0.000 description 1
- 125000000904 isoindolyl group Chemical group C=1(NC=C2C=CC=CC12)* 0.000 description 1
- ZBKFYXZXZJPWNQ-UHFFFAOYSA-N isothiocyanate group Chemical group [N-]=C=S ZBKFYXZXZJPWNQ-UHFFFAOYSA-N 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 125000003564 m-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(C#N)=C1[H])C([H])([H])* 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 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
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- DCZNSJVFOQPSRV-UHFFFAOYSA-N n,n-diphenyl-4-[4-(n-phenylanilino)phenyl]aniline Chemical class C1=CC=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 DCZNSJVFOQPSRV-UHFFFAOYSA-N 0.000 description 1
- 125000006606 n-butoxy group Chemical group 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([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
- XTXZAZCDNWMPRK-UHFFFAOYSA-N naphthalene;phenol Chemical compound OC1=CC=CC=C1.C1=CC=CC2=CC=CC=C21 XTXZAZCDNWMPRK-UHFFFAOYSA-N 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000006502 nitrobenzyl group Chemical group 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 125000000018 nitroso group Chemical group N(=O)* 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 125000006505 p-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C#N)C([H])([H])* 0.000 description 1
- 125000006503 p-nitrobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1[N+]([O-])=O)C([H])([H])* 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- ZOUWOGOTHLRRLS-UHFFFAOYSA-N palladium;phosphane Chemical compound P.[Pd] ZOUWOGOTHLRRLS-UHFFFAOYSA-N 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 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
- 239000012071 phase Substances 0.000 description 1
- 125000001644 phenoxazinyl group Chemical group C1(=CC=CC=2OC3=CC=CC=C3NC12)* 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 125000005936 piperidyl group Chemical group 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 125000005548 pyrenylene group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000001275 scanning Auger electron spectroscopy Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 125000005346 substituted cycloalkyl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 125000001981 tert-butyldimethylsilyl group Chemical group [H]C([H])([H])[Si]([H])(C([H])([H])[H])[*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000004149 thio group Chemical group *S* 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M thiocyanate group Chemical group [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- JFLKFZNIIQFQBS-FNCQTZNRSA-N trans,trans-1,4-Diphenyl-1,3-butadiene Chemical group C=1C=CC=CC=1\C=C\C=C\C1=CC=CC=C1 JFLKFZNIIQFQBS-FNCQTZNRSA-N 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000004784 trichloromethoxy group Chemical group ClC(O*)(Cl)Cl 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- 125000005034 trifluormethylthio group Chemical group FC(S*)(F)F 0.000 description 1
- 125000003652 trifluoroethoxy group Chemical group FC(CO*)(F)F 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 125000005455 trithianyl group Chemical group 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/0805—Compounds with Si-C or Si-Si linkages comprising only Si, C or H atoms
- C07F7/0807—Compounds with Si-C or Si-Si linkages comprising only Si, C or H atoms comprising Si as a ring atom
-
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C13/00—Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
- C07C13/28—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
- C07C13/32—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings
- C07C13/54—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with three condensed rings
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C13/00—Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
- C07C13/28—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
- C07C13/32—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings
- C07C13/54—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with three condensed rings
- C07C13/573—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with three condensed rings with three six-membered rings
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/20—Polycyclic condensed hydrocarbons
- C07C15/27—Polycyclic condensed hydrocarbons containing three rings
- C07C15/28—Anthracenes
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/20—Polycyclic condensed hydrocarbons
- C07C15/27—Polycyclic condensed hydrocarbons containing three rings
- C07C15/30—Phenanthrenes
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/20—Polycyclic condensed hydrocarbons
- C07C15/38—Polycyclic condensed hydrocarbons containing four rings
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- 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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
- C07C2603/24—Anthracenes; Hydrogenated anthracenes
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
- C07C2603/26—Phenanthrenes; Hydrogenated phenanthrenes
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- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/40—Ortho- or ortho- and peri-condensed systems containing four condensed rings
- C07C2603/42—Ortho- or ortho- and peri-condensed systems containing four condensed rings containing only six-membered rings
- C07C2603/50—Pyrenes; Hydrogenated pyrenes
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1014—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
- C09K2211/1048—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms with oxygen
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/622—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing four rings, e.g. pyrene
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
Definitions
- Biphenyl derivative material for organic electroluminescent device, and organic electroluminescent device using the same
- the present invention relates to a biphenyl derivative having a specific structure and an organic electoluminescence device using the biphenyl derivative as a light-emitting material. More specifically, the present invention relates to a long-life organic electoluminescence device and its realization This relates to biphenyl derivatives having a specific structure.
- An organic electroluminescent device (hereinafter, electroluminescent device may be abbreviated as EL) is applied with an electric field to generate recombination energy between holes injected from an anode and electrons injected from a cathode. It is a self-luminous element that utilizes the principle that a fluorescent substance emits light. Report of low-voltage driven organic EL devices using stacked devices by Eastman Kodak's CW Tang, etc. (CW Tang, SA Vanslyke, Applied Physics Letters, 51 ⁇ , 913, 1987, etc.) Since then, research on organic EL devices using organic materials as constituent materials has been actively conducted. Tang et al.
- the device structure of the organic EL device includes a hole transport (injection) layer, a two-layer type of electron transporting light emitting layer, or a hole transport (injection) layer, light emitting layer, electron transport (injection) layer
- the three-layer type is well known. In such a multilayer structure element, the element structure and the formation method have been devised in order to increase the recombination efficiency between injected holes and electrons.
- chelate complexes such as tris (8-quinolinolato) aluminum complex
- luminescent materials such as coumarin derivatives, tetraphenol butadiene derivatives, bisstyryl arylene derivatives, oxadiazole derivatives and the like are known. From then on, blue power to red It is reported that light emission in the visible region can be obtained, and realization of a color display element is expected (for example, Patent Document 1, Patent Document 2, and Patent Document 3).
- Patent Document 4 discloses a device using a phenylanthracene derivative as a light emitting material. Further, Patent Document 5 discloses a material having a naphthyl group at 9th and 10th positions of anthracene. Such anthracene derivatives are used as blue light emitting materials
- Patent Document 6 discloses a material having a fluoranthene group at positions 9 and 10 of anthracene. Such anthracene derivatives are used as blue light-emitting materials, but there has been a demand for improvement in device lifetime.
- Patent Document 7 discloses that various anthracene derivatives are used as hole transport materials! However, evaluation as a luminescent material has not been made yet.
- Patent Document 8 discloses a 3-substituted benzene derivative.
- Patent Document 1 Japanese Patent Laid-Open No. 8-239655
- Patent Document 2 JP-A-7-183561
- Patent Document 3 JP-A-3-200889
- Patent Document 4 JP-A-8-12600
- Patent Document 5 JP-A-11-3782
- Patent Document 6 Japanese Patent Laid-Open No. 2001-257074
- Patent Document 7 Japanese Patent Laid-Open No. 2000-182776
- Patent Document 8 Japanese Patent Laid-Open No. 2001-192651
- Patent Document 9 JP-A-8-12600
- Patent Document 10 Japanese Patent Application Laid-Open No. 2000-344691
- Patent Document 11 Japanese Patent Application Laid-Open No. 2004-2351
- Patent Document 12 Japanese Unexamined Patent Application Publication No. 2005-15420
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a long-life organic EL element. It is another object of the present invention to provide a biphenyl derivative particularly suitable as a light emitting material used in the organic EL device of the present invention.
- a long-life organic EL device can be produced by using the biphenyl derivative represented by (I) as a material for an organic EL device.
- Ar 1 and Ar 2 are condensed aromatic hydrocarbon groups having a force of 3 or more rings
- Ar 3 is a phenyl group or a condensed aromatic hydrocarbon group having a force of 2 or more rings. It is. However, when any of Ar 1 to Ar 3 is an anthracene-9-yl group, the 10th position of anthracene is not a hydrogen atom.
- Ri to R 3 are each independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 5 to 50 nuclear atoms, substituted or unsubstituted.
- Aralkyl group substituted or unsubstituted arylene having 6 to 50 carbon atoms
- Xyl group substituted or unsubstituted arylenethio group having 6 to 50 carbon atoms
- substituted or unsubstituted alkoxycarbonyl group having 2 to 50 carbon atoms
- substituted or unsubstituted alkyl group having 1 to 50 carbon atoms
- a silyl group, a carboxyl group, a halogen atom, a cyano group, a nitro group, or a hydroxyl group may be substituted with an unsubstituted aryl group having 6 to 50 carbon atoms.
- R 4 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 10 nuclear carbon atoms, a substituted or unsubstituted aromatic heterocyclic group having 5 to 50 nuclear atoms, a substituted or unsubstituted carbon group having 1 to 50 carbon atoms.
- a to d each independently represent an integer of 0 to 3.
- the present invention provides an organic electoluminescence device in which an organic thin film layer composed of one or more layers including at least a light emitting layer is sandwiched between a cathode and an anode. It is to manufacture an organic electoluminescence device containing a derivative.
- the present invention has been made to solve the above-mentioned problems, and can provide a long-life organic EL element. Furthermore, it is possible to provide a particularly suitable biphenyl derivative having a sufficient life as a material for an organic EL element used in the organic EL element of the present invention.
- the first invention of the present invention is a bifur derivative represented by the following general formula (I).
- the general formula (I) is more preferably the general formula (III) which is preferably the following general formula (II) or (III).
- Ar 1 and Ar 2 are substituted or unsubstituted condensed aromatic hydrocarbon groups composed of three or more rings. However, when Ar 1 or Ar 2 is an anthracene-9-yl group, the 10th position of anthracene is not a hydrogen atom.
- 9 phenanthryl group, 9 anthryl group, 1-pyrenyl group and the like are mentioned.
- Ar 3 is a substituted or unsubstituted phenol group or a substituted or unsubstituted condensed aromatic hydrocarbon group composed of two or more rings.
- Ar 3 is an anthracene-9-yl group, the 10th position of anthracene is not a hydrogen atom.
- a phenol group 1 naphthyl group, 2 naphthyl group, 1 anthryl group, 2 anthryl group, 9 anthryl group, 1-phenanthryl group, 2-phenanthryl group, 3-phenanthryl group, 4 phenanthryl group 9-phenanthryl group, 1-chrysyl group, 2 chrysal group, 6 chrysal group, 1-naphthasel group, 2 naphthasel group, 9 naphthasel group, 1-pyrole group, Examples include 2-pyrenyl group and 4-pyrenyl group.
- a phenyl group 1 naphthyl group, 2 naphthyl group, 9-naphthyl group, 9 Anthryl group, 1-pyrenyl group and the like can be mentioned.
- the biphenyl derivative of the present invention is a condensed aromatic hydrocarbon group in which Ar 3 is composed of two or more rings in the above general formulas (I) to ( ⁇ ).
- the biphenyl derivative of the present invention is a condensed aromatic hydrocarbon group in which Ar 3 is composed of three or more rings in the above general formulas ( ⁇ ) to ( ⁇ ).
- Ri to R 3 are each independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted number of nuclear atoms 5
- each R 4 is independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 10 nuclear carbon atoms, or a substituted or unsubstituted aromatic group having 5 to 50 nuclear atoms.
- Heterocyclic group substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted cycloalkyl group having 3 to 50 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, substituted or unsubstituted Substituted aralkyl group having 7 to 50 carbon atoms, substituted or unsubstituted aryloxy group having 6 to 50 carbon atoms, substituted or unsubstituted aryloxy group having 6 to 50 carbon atoms, substituted or unsubstituted 2 to 50 carbon atoms Alkoxycarbonyl group, substituted or absent A silyl group, carboxyl group, halogen atom, cyano group, nitro group, or hydroxyl group which may be substituted with a substituted alkyl group having 1 to 50 carbon atoms or a substituted or unsubstituted aryl group having 6 to 50 carbon atom
- Examples of the substituted or unsubstituted aromatic hydrocarbon group having 6 to 10 nuclear carbon atoms as R 4 in the general formulas (I) to (III) include a phenyl group from the above aromatic hydrocarbon groups, Examples include 1-naphthyl group, 2-naphthyl group, o-tolyl group, m-tolyl group, p-tolyl group, and p-tert-butyl group.
- aromatic heterocyclic group of the general formula (I) ⁇ (III) substituted or unsubstituted 5 to 50 ring atoms which is Ri ⁇ R 4 in, 1-pyrrolyl group, 2-pyrrolyl group, 3 Pyrrolyl group, Pyradur group, 2 Pyridinyl group, 3 Pyridyl group, 4 Pyridinyl group, 1 Indolyl group, 2-Indolyl group, 3-Indolyl group, 4-Indolyl group, 5-Indolyl group, 6-India Ryl group, 7-Indolyl group, 1-Isoindolyl group, 2-Isoindolyl group, 3-Isoindryl group, 4 Isoindolyl group, 5-Isoindolyl group, 6-Isoindolyl group, 7-Isoindryl group, 2 Furyl group, 3 Furyl group Group, 2 benzofural group, 3 benzofural group, 4 benz
- substituted or unsubstituted alkyl group having 1 to 50 carbon atoms which is Ri to R 4 in the general formulas (I) to (III) include a methyl group, an ethyl group, a propyl group, an isopropyl group, n— Butyl group, s-butyl group, isobutyl group, t-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, hydroxymethyl group, 1-hydroxyethyl group 2-hydroxyethyl group, 2-hydroxyisobutyl group, 1,2-dihydroxyethyl group, 1,3 dihydroxyisopropyl group, 2,3 dihydroxy-tert-butyl group, 1,2,3 trihydroxypropyl group, Chloromethyl group, 1-chlorodiethyl group, 2-chlorodiethyl group, 2-chlorodiisobutyl group, 1,
- Ri ⁇ R 4 in the substituted or unsubstituted consequent opening alkyl group having 3 to 50 carbon atoms, such as cyclopropyl group, cyclobutyl group, a cycloalkyl
- examples include a pentyl group, a cyclohexyl group, a 4-methylcyclohexyl group, a 1-adamantyl group, a 2-adamantyl group, a 1-norbornyl group, and a 2-norbornyl group.
- the alkoxy group represented by Ri to R 4 in the general formulas (I) to ( ⁇ ) is a group represented by OY, and examples of Y include specific examples similar to the alkyl group.
- the substituted or unsubstituted aryloxy group having 6 to 50 carbon atoms which is Ri to R 4 in the general formulas (I) to (III), is represented as —OY, and examples of Y include a phenyl group.
- Formula (I) is a Ri ⁇ R 4 in ⁇ (III) substituted or unsubstituted ⁇ Li one thio group having 6 to 50 carbon atoms of, 'is expressed as, Y' SY Examples of the Examples thereof are the same as those for Y 'of the aryloxy group.
- the substituted or unsubstituted alkoxycarbonyl group having 2 to 50 carbon atoms which is Ri to R 4 in the general formulas (I) to ( ⁇ ) is represented as COOZ, and examples of Z are the same as those of the alkyl group. An example is given.
- Ri to R 4 each represents a substituent such as an alkyl group (methyl group, ethyl group, propyl group, isopropyl group, n Butyl group, s butyl group, isobutyl group, t butyl group, n-pentyl group, n-hexyl group, n-to Butyl, n-octyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxycetyl, 2 hydroxyisobutyl, 1,2 dihydroxyethyl, 1,3 dihydroxyisopropyl, 2,3 dihydroxy 1-t-butyl group, 1, 2, 3 trihydroxypropinole group, chloromethinole group, 1 chloroethinole group, 2-chloroethynole group, 2-chloroisobutylyl group, 1,2 dichloroethyl group, 1,3 dichloroiso
- Aryl groups having 5 to 40 nuclear atoms amino groups substituted with aryl groups having 5 to 40 nuclear atoms, ester groups having aryl groups having 5 to 40 nuclear atoms, and 1 to 6 carbon atoms
- Examples include an ester group having an alkyl group, a cyan group, a nitro group, and a halogen atom.
- Ri to R 4 in the general formulas (I) to (III) may be substituted with a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms or a substituted or unsubstituted aryl group having 6 to 50 carbon atoms.
- the silyl group include a trimethylsilyl group, a triethylsilyl group, a tert-butyldimethylsilyl group, a butyldimethylsilyl group, a propyldimethylsilyl group, and a triphenylsilyl group.
- halogen atom represented by Ri to R 4 in the general formulas ( ⁇ ) to ( ⁇ ) include fluorine, chlorine, bromine, and iodine.
- a to d are each independently an integer of 0 to 3.
- the biphenyl derivative of the present invention is preferably an organic EL device material as an organic EL device material It is more preferable for the light-emitting material for use, and particularly preferable for the host material for the organic EL device.
- the organic EL device of the present invention is an organic electoluminescence device in which an organic thin film layer composed of one or more layers including at least a light emitting layer is sandwiched between an anode and a cathode, wherein the organic thin film layer is represented by the general formula (I) To (ii) contain at least one selected from the biphenyl derivatives described in any one of them alone or as a component of a mixture.
- the light emitting layer further contains an arylamine compound and Z or a styrylamine compound.
- the styrylamine compound is preferably a compound represented by the following general formula (A).
- Ar is a group selected from a phenyl group, a biphenyl group, a terfel group, a stilbene group, a distyryl group, and Ar 4 and Ar 5 are each a hydrogen atom or a carbon number.
- An aromatic hydrocarbon group of force S6-20, Ar 4 and Ar 5 may be substituted.
- p is an integer from 1 to 4. More preferably, at least one of Ar 4 or Ar 5 is substituted with a styryl group.
- examples of the aromatic hydrocarbon group having 6 to 20 carbon atoms include phenyl group, naphthyl group, anthryl group, phenanthryl group, and terphenyl group.
- arylamine compound a compound represented by the following general formula (B) is preferable.
- Ar 6 to Ar 8 are substituted or unsubstituted aryl groups having 6 to 40 nuclear carbon atoms.
- Q is an integer of 1 to 4.
- the aryl group having 6 to 40 nuclear carbon atoms includes, for example, a phenol group, a naphthyl group, an anthryl group, a phenanthryl group, a pyryl group, a conjugated group, and a biphenyl group.
- substituents for the aryl group include alkyl groups having 1 to 6 carbon atoms (ethyl group, methyl group, i-propyl group, n-propyl group, sbutyl group, t-butyl group).
- Pentyl group, hexyl group, cyclopentyl group, cyclohexyl group, etc. C1-C6 alkoxy group (ethoxy group, methoxy group, i-propoxy group, n-propoxy group, s-butoxy group, t-butoxy group) Group, pentoxy group, hexyloxy group, cyclopentoxy group, cyclohexyloxy group, etc.), aryl group having 5 to 40 nuclear carbon atoms, amino group substituted with aryl group having 5 to 40 nuclear carbon atoms And an ester group having an aryl group having 5 to 40 nuclear carbon atoms, an ester group having an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a halogen atom, and the like.
- Anode Z Inorganic semiconductor layer Z Insulating layer Z Light emitting layer Z Insulating layer Z Cathode
- the force for which the configuration of (8) is preferably used is not limited to these.
- the biphenyl compound of the present invention may be used in any of the above organic layers, but the emission band or hole transport in these constituent elements. It is preferred to be contained in the band. Particularly preferably, it is contained in the light emitting layer. The amount to be included is 30 to: LOO mol% force.
- This organic EL element is usually produced on a translucent substrate.
- This translucent substrate is a substrate that supports the organic EL element, and the translucency of the light transmission in the visible region having a wavelength of 400 to 700 nm is preferably 50% or more, which is smoother. It is preferable to use a substrate.
- a translucent substrate for example, a glass plate, a synthetic resin plate, or the like is preferably used.
- the glass plate include soda lime glass, norlium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, norium borosilicate glass, and quartz.
- the synthetic resin plate include polycarbonate resin, acrylic resin, polyethylene terephthalate resin, polyethersulfide resin, and polysulfone resin.
- the anode plays a role of injecting holes into the hole transport layer or the light emitting layer, and it is effective to have a work function of 4.5 eV or more.
- anode materials used in the present invention include indium tin oxide (ITO), a mixture of indium oxide and zinc oxide (I ZO), a mixture of ITO and cerium oxide (ITCO), and a mixture of IZO and cerium oxide.
- ITO indium tin oxide
- I ZO indium oxide and zinc oxide
- ITO and cerium oxide ITO and cerium oxide
- IZO a mixture of IZO and cerium oxide
- ICO indium oxide and cerium oxide
- AZO acid ⁇ zinc and acid ⁇ aluminum
- NESA acid ⁇ tin
- the anode can be produced by forming a thin film from these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance of the anode for light emission is greater than 10%.
- the sheet resistance of the anode is preferably several hundred ⁇ or less.
- the film thickness of the anode is a force depending on the material. Usually, it is selected in the range of 10 nm to l ⁇ m, preferably 10 to 200 nm.
- the light emitting layer comprises
- Injection function function that can inject holes from the anode or hole injection layer when an electric field is applied, and can inject electrons from the negative electrode or electron injection layer
- Transport function Function to move injected charges (electrons and holes) by the force of electric field
- Luminescent function provides a field for recombination of electrons and holes, and has a function to connect this to light emission.
- the light emitting layer is particularly preferably a molecular deposited film.
- the molecular deposition film is a thin film formed by deposition from a material compound in a gas phase state or a film formed by solidification from a material compound in a solution state or a liquid phase state.
- a film can be classified from a thin film (accumulated film) formed by the LB method by the difference in aggregated structure and higher-order structure and functional differences resulting from it.
- JP-A-57-51781 after binding a binder such as a resin and a material compound into a solution by dissolving them in a solvent, this is prepared by a spin coating method or the like.
- the light emitting layer can also be formed by forming a thin film.
- the light emitting layer may contain other known light emitting materials other than the light emitting material comprising the biphenyl derivative of the present invention as desired.
- a light emitting layer containing another known light emitting material may be stacked on the light emitting layer.
- the hole injection / transport layer is a layer that assists the injection of holes into the light emitting layer and transports it to the light emitting region, and has a high ion mobility and a low ion energy of usually 5.5 eV or less.
- a material that transports holes to the light-emitting layer with a lower electric field strength is preferred.
- the mobility force of holes for example, 10 4 ⁇ : When applying an electric field of LOV / cm, even without least preferred if 10- 4 cm 2 ZV ⁇ seconds.
- the material for forming the hole injecting / transporting layer is not particularly limited as long as it has the above-mentioned preferred properties.
- materials that are commonly used as hole charge transporting materials in photoconductive materials It is used for the hole injection layer of the organic EL device! Any one of the known ones can be selected and used.
- aromatic amine derivative a compound represented by the following general formula can be considered.
- Ar u to Ar 13 , Ar 21 to Ar 23 and Ar 3 to Ar 8 are substituted or unsubstituted aromatic hydrocarbon groups having 6 to 50 nuclear carbon atoms or aromatic heterocyclic groups having 5 to 50 nuclear atoms. is there. a to c and p to r are integers from 0 to 3, respectively. Ar 3 and Ar 4 , Ar 5 and Ar 6 , Ar 7 and Ar 8 may be linked to each other to form a saturated or unsaturated ring.
- Specific examples of the aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms include the same aromatic hydrocarbon groups represented by Ri to R 3 in the general formulas ( ⁇ ) to ( ⁇ ).
- Specific examples of the aromatic heterocyclic group having 5 to 50 nuclear atoms include those similar to the aromatic heterocyclic group represented by RR 4 in the general formulas ( ⁇ ) to ( ⁇ ).
- Ar 4 is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, or a nucleus It is an aromatic heterocyclic group having 5 to 50 atoms.
- L is a linking group, which is a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, or an aromatic heterocyclic group having 5 to 50 nuclear atoms.
- X is an integer of 0-5.
- Ar 2 and Ar 3 may be linked together to form a saturated or unsaturated ring.
- specific examples of the aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms include those similar to the aromatic hydrocarbon group represented by in the general formulas ( ⁇ ) to ( ⁇ ).
- specific examples of the aromatic heterocyclic group having 5 to 50 nuclear atoms include the same aromatic heterocyclic groups represented by Ri to R 4 in the general formulas ( ⁇ ) to ( ⁇ ). .
- silazane derivatives US Pat. No. 4,950,950
- polysilane Japanese Patent Laid-Open No. 2-204996
- Anirin copolymer JP-2 282 263 JP
- leaving the conductive polymer oligomer which is disclosed in JP-A-1 211 399 (in particular Chio phen oligomer) or the like in Ageruko transgression.
- Porphyrin compounds (disclosed in JP-A-63-29556965), aromatic tertiary amine compounds and styrylamine compounds (US) Patent No. 4, 127, 412, JP-A 53-27033, 54-58445, 54-149634, 54-64299, 55-79450, 55-144250 gazette, 56-119132 gazette, 61-295 558 gazette, 61-98353 gazette, 63-295695 gazette, etc.), especially using aromatic tertiary amine compounds Favored ,.
- NPD N-bis (N— (1-naphthyl) -N ferroamino) biphenol having two condensed aromatic rings described in US Pat. No. 5,061,569 in the molecule.
- -4 (hereinafter abbreviated as NPD) and three tri-amine units described in JP-A-4-308688 are connected in a starburst type 4, 4 ', 4 "-Tris (N- (3-methylphenol) -N-phenylamino) triphenylamine (hereinafter abbreviated as MTDATA).
- R 4 , R 5 and R 6 each represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted bicyclic group.
- R 5 and R 6 may be the same or different.
- R 1 and R 2 , R 3 and R 4 , R 5 and R 6 or R 1 and R 6 , R 2 and R 3 , R 4 and R 5 may form a condensed ring.
- ⁇ ⁇ represents a substituent, preferably an electron withdrawing group such as cyan group, nitro group, sulfol group, carbo ol group, trifluoromethyl group, halogen and the like.
- inorganic compounds such as p-type Si and p-type SiC can be used as the material for the hole injection layer.
- the hole injection / transport layer can be formed by thin-filming the above-described compound by a known method such as a vacuum deposition method, a spin coating method, a casting method, or an LB method.
- the thickness of the hole injection / transport layer is not particularly limited, but is usually 5 nm to 5 m.
- the hole injection / transport layer may be composed of one or more of the above-described materials, or the hole injection layer.
- a “hole injection” transport layer made of a compound different from the transport layer may be laminated.
- the organic semiconductor layer is a layer that assists hole injection or electron injection into the light-emitting layer, and preferably has a conductivity of 10 0 _ 1 Q SZcm or more.
- Examples of the material for the organic semiconductor layer include thioolefin oligomers, conductive oligomers such as allylamin oligomers disclosed in JP-A-8-193191, allylamin dendrimers, and the like. Conductive dendrimers or the like can be used.
- the electron injection layer 'transport layer is a layer that assists the injection of electrons into the light emitting layer and transports it to the light emitting region.
- the electron mobility is high and the adhesion improving layer is included in the electron injection layer.
- it is a layer having good material strength with good adhesion to the cathode.
- the electron transport layer is appropriately selected with a film thickness of several nm to several m.
- an electric field of lO lC / cm is applied to avoid an increase in voltage.
- it is preferable electron mobility is the least 10- 5 cm 2 ZVs than.
- 8-hydroxyquinoline or a metal complex of its derivative or an oxadiazole derivative is suitable.
- Specific examples of the above-mentioned metal complexes of 8-hydroxyquinoline or derivatives thereof include metal chelate oxinoid compounds including chelates of oxine (generally 8-quinolinol or 8-hydroxyquinoline) such as tris (8 — Quinolinolato) aluminum can be used as the electron injection material.
- examples of the oxadiazole derivative include electron transfer compounds represented by the following general formula.
- Ar 1 , Ar 2 , Ar 3 , Ar 5 , Ar °, and Ar 9 each represent a substituted or unsubstituted aryl group, and may be the same or different from each other.
- Ar 4 , Ar 8 represents a substituted or unsubstituted arylene group, which may be the same or different.
- the aryl group includes a phenyl group, a biphenyl group, an anthryl group, a perylenyl group, An example is a pyrenyl group.
- Examples of the arylene group include a phenylene group, a naphthylene group, a biphenylene group, an anthrylene group, a peryleneylene group, and a pyrenylene group.
- examples of the substituent include an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and a cyan group. This electron transfer compound is preferably a thin film forming material.
- electron-transmitting compound examples include the following.
- AA is independently a nitrogen atom or a carbon atom.
- Ar 1 is a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms
- Ar 2 is a hydrogen atom, substituted or unsubstituted Aryl group having 6 to 60 nuclear carbon atoms, substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or substituted Is an unsubstituted alkoxy group having 1 to 20 carbon atoms, or a divalent group thereof.
- Ar 1 or Ar 2 is a substituted or unsubstituted condensed ring group having 10 to 60 nuclear carbon atoms, a substituted or unsubstituted monoheterocondensed ring group having 3 to 60 nuclear carbon atoms, or These are divalent groups.
- ⁇ L 2 and L are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 60 nuclear carbon atoms, or a substituted or unsubstituted group. It is a substituted fluorenylene group.
- R is a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
- ⁇ is an integer of 0 to 5, and when ⁇ is 2 or more, a plurality of Rs may be the same or different and adjacent to each other
- a plurality of R groups may be bonded to each other to form a carbocyclic aliphatic ring or a carbocyclic aromatic ring.
- R 1 represents a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, a substituted or unsubstituted carbon number of 1 to 2
- HAr is a nitrogen-containing heterocycle having 3 to 40 carbon atoms which may have a substituent
- L is a single bond and having 6 to 60 carbon atoms which may have a substituent.
- a fluorolenylene group, and Ar 1 is A divalent aromatic hydrocarbon group having 6 to 60 carbon atoms which may have a substituent
- Ar 2 is an aryl group having 6 to 60 carbon atoms which may have a substituent or A nitrogen-containing heterocyclic derivative represented by the following formula: a heteroaryl group having 3 to 60 carbon atoms, which may have a substituent.
- X and Y are each independently a saturated or unsaturated hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group, an alkoxy group, an alkyloxy group, a hydroxy group, a substituted or An unsubstituted aryl group, a substituted or unsubstituted heterocycle, or a structure in which X and ⁇ are combined to form a saturated or unsaturated ring, R to R
- alkyl 14 is independently hydrogen, halogen atom, substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, alkoxy group, aryloxy group, perfluoroalkyl group, perfluoroalkoxy group, Amino group, alkyl carboxylic group, aryl carbonyl group, alkoxy carbo yl group, aryl carbonyl group, azo group, alkyl carbo oxy group, aryl carbo oxy group, alkoxy carbo oxy group, ally oxy Carboxyoxy group, sulfyl group, sulfol group, sulfar group, silyl group, strong rubamoyl group, aryl group, heterocyclic group, alkenyl group, alkyl group, nitro group, formyl group , Nitroso group, formyloxy group, isocyano group, cyanate group, isocyanate group, thiocyanate group, isothiocyanate group or
- R to R and Z are each independently a hydrogen atom, a saturated or unsaturated carbonization
- a hydrogen group, an aromatic hydrocarbon group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy group or an aryloxy group, and X, Y and Z are each independently saturated or unsaturated.
- N represents an integer of 1 to 3, and when n is 2 or more, Z may be different.
- n is 1, X, Y
- R acetyl group, R force hydrogen atom or substituted boryl group, and n is 3.
- Q 1 and Q 2 each independently represent a ligand represented by the following general formula (K), and L represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted group.
- L represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted group.
- OR ⁇ R 1 is a hydrogen atom, substituted or unsubstituted alkyl group, substituted or unsubstituted cycloalkyl group, substituted Or an unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.
- Q 3 and Q 4 are the same as Q 1 and Q 2 ).
- rings A 1 and A 2 are 6-membered aryl rings condensed with each other and may have a substituent.
- This metal complex is strong as an n-type semiconductor and has a high electron injection capability. Furthermore, since the generation energy at the time of complex formation is low, the bond between the metal and the ligand of the formed metal complex is strengthened, and the fluorescence quantum efficiency as a light emitting material is also increasing.
- substituents of the rings A 1 and A 2 that form the ligand of the general formula (K) include chlorine, bromine, iodine, halogen atoms of fluorine, methyl group, ethyl group, propyl group, A substituted or unsubstituted alkyl group such as a methyl group, s-butyl group, t-butyl group, pentyl group, hexyl group, heptyl group, octyl group, stearyl group, trichloromethyl group, phenyl group, naphthyl group, 3 — Substitution of methylphenyl group, 3-methoxyphenyl group, 3-fluorophenyl group, 3-trichloromethylphenyl group, 3-trifluoromethylphenyl group, 3--trifluorophenyl group, etc.
- aryl group methoxy group, n -butoxy group, t -butoxy group, trichloromethoxy group, trifluoroethoxy group, pentafluoropropoxy group, 2, 2, 3, 3-terafluoro Propoxy group, 1, 1, 1, 3, 3, 3 Hexafluoro 2-propyloxy group, 6- (Perfluoroethyl) Hexyloxy group substituted or unsubstituted alkoxy group, phenoxy group, p-trophenoxy group, p-t-butylphenoxy group, 3- Substituted or unsubstituted aryloxy group such as fluorophenoxy group, pentafluorophenyl group, 3-trifluoromethylphenoxy group, methylthio group, ethylthio group, t-butylthio group, hexylthio group , Octylthio group, trifluoromethylthio group, etc., substituted or unsubstituted ary
- Mono- or di-substituted amino groups such as a ruamino group, dipropylamino group, dibutylamino group, diphenylamino group, bis (acetoxymethyl) Amino groups such as mino group, bis (acetoxetyl) amino group, bis (acetoxypropyl) amino group, bis (acetoxybutyl) amino group, hydroxyl group, siloxy group, acyl group, methylcarbamoyl group, dimethylcarbamoyl group, ethyl group Powerful rubamoyl groups such as rucarbamoyl group, jetylcarbamoyl group, propylcarbamoyl group, butylcarbamoyl group, and phenylcarbamoyl group, carboxylic acid group, sulfonic acid group, imide group, cyclopentane group, cyclohexyl group, etc.
- Cycloalkyl group phenyl group, naphthyl group, biphenyl group, anthryl group, phenanthryl group, fluorenyl group, pyrenyl group and other aryl groups, pyridyl group, birazinyl group, pyrimidinyl group, pyridazinyl group, Triazyl group, indolyl group, quinolinyl group, attaridyl group, pyrrole -Luyl group, dioxanyl group, piperidyl group, morpholyl group, piperazinyl group, trithianyl group, carbazolyl group, furanyl group, thiophnyl group, oxazolyl group, oxadiazolyl group, benzoxazolyl group, thiazolyl group, There are heterocyclic groups such as thiadiazolyl group, benzothiazolyl group, triazolyl group, imidazolyl group, benzoimid
- a preferred form of the organic EL device of the present invention is a device containing a reducing dopant in a region for transporting electrons or an interface region between the cathode and the organic layer.
- the reducing dopant is defined as a substance capable of reducing the electron transporting compound. Accordingly, various materials can be used as long as they have a certain reducibility, such as alkali metals, alkaline earth metals, rare earth metals, alkali metal oxides, alkali metal halides, alkalis.
- Earth metal oxides alkaline earth metal halides, rare earth metal oxides or rare earth metal halides, alkali metal carbonates, alkaline earth metal carbonates, alkali metal organic complexes, alkaline earths
- At least one substance selected from the group power consisting of organic complexes of metals and organic complexes of rare earth metals can be preferably used.
- preferable reducing dopants include Na (work function: 2.36 eV), K (work function: 2.28 eV), Rb (work function: 2.16 eV) and Cs (work function: 1).
- 95eV) Force Group force At least one selected alkali metal, Ca (work function: 2.9 eV), Sr (work function: 2.0 to 2.5 eV), and Ba (work function: 2.52 eV) ) Force group force It is particularly preferred that the work function in which at least one alkaline earth metal is selected is 2.9 eV or less.
- a more preferable reducing dopant is at least one alkali metal selected from the group power consisting of K, Rb and Cs, more preferably Rb or Cs, and most preferably Cs. It is.
- alkali metals can improve emission brightness and extend the life of organic EL devices by adding a relatively small amount to the electron injection region, which has a particularly high reducing ability.
- a reducing dopant having a work function of 2.9 eV or less a combination of these two or more alkali metals is also preferred.
- combinations containing Cs, such as Cs and Na, Cs and K, A combination of Cs and Rb or Cs, Na and ⁇ is preferred.
- an electron injection layer composed of an insulator or a semiconductor may be further provided between the cathode and the organic layer.
- an insulator at least one metal compound selected from the group consisting of alkali metal chalcogenides, alkaline earth metal chalcogenides, alkali metal halides, and alkaline earth metal halides may be used. Preferred. If the electron injection layer is composed of these alkali metal chalcogenides or the like, it is preferable in that the electron injection property can be further improved.
- preferred alkali metal strength rucogates include, for example, Li 0, K 0, Na S, Na Se and Na 2 O, and are preferred.
- New alkaline earth metal chalcogenides include, for example, CaO, BaO, SrO, BeO, BaS , And CaSe.
- preferable alkali metal halides include, for example, LiF, NaF, KF, CsF, LiCl, KC1, and NaCl.
- Preferred alkaline earth metal halides include, for example, CaF, BaF, SrF, MgF, and
- Examples include fluorides such as BeF and halides other than fluorides.
- the inorganic compound constituting the electron transport layer is preferably a microcrystalline or amorphous insulating thin film. If the electron transport layer is composed of these insulating thin films, a more uniform thin film is formed, and pixel defects such as dark spots can be reduced. Examples of such inorganic compounds include the above-mentioned alkali metal chalcogenides, alkaline earth metal strength alkoxides, alkali metal halides and alkaline earth metal halides.
- the cathode those having an electrode substance of a metal / alloy, an electrically conductive compound and a mixture thereof having a small work function! / ⁇ (4 eV or less) are used.
- electrode materials include sodium, sodium monopotassium alloy, magnesium, lithium, cesium, magnesium 'silver alloy, aluminum Z aluminum oxide, AlZLi 0, Al / LiO, Al
- This cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance for the light emission of the cathode is preferably larger than 10%.
- the sheet resistance as a cathode is preferably several hundred ⁇ / b or less, and the film thickness is usually ⁇ ! ⁇ 1 ⁇ m, preferably 50 to 200 nm.
- an organic EL element applies an electric field to an ultra-thin film, pixel defects due to leakage or short-circuiting are likely to occur.
- an insulating thin film layer may be inserted between the pair of electrodes.
- Examples of the material used for the insulating layer include aluminum oxide, lithium fluoride, lithium oxide, fluorescesium, acid cesium, acid magnesium, fluoric magnesium, and acid carbonate.
- Examples include ruthenium, calcium fluoride, aluminum nitride, titanium oxide, silicon oxide, germanium oxide, silicon nitride, boron nitride, molybdenum oxide, ruthenium oxide, and vanadium oxide. A mixture or laminate of these may be used.
- the anode, the light emitting layer, the hole injection layer as necessary, and the electron injection as necessary for example, by the above materials and methods.
- the layer may be formed and finally the cathode may be formed.
- the organic EL element can be fabricated in the reverse order from the cathode to the anode.
- an organic EL device having a structure in which an anode, a Z hole injection layer, a Z light emitting layer, a Z electron injection layer, and a Z cathode are sequentially provided on a transparent substrate will be described.
- a thin film made of an anode material is formed on a suitable light-transmitting substrate by an evaporation method or a sputtering method so as to have a thickness of 1 ⁇ m or less, preferably in the range of 10 to 200 nm, and used as an anode.
- a hole injection layer is provided on the anode.
- the hole injection layer can be formed by a vacuum deposition method, a spin coating method, a casting method, an LB method, or the like, but a homogeneous film can be obtained immediately and pinholes are generated. It is preferable to form by a vacuum vapor deposition method.
- the deposition conditions vary depending on the compound used (material of the hole injection layer), the crystal structure and recombination structure of the target hole injection layer, etc.
- the light emitting layer can also be formed by thinning the light emitting material by a method such as vacuum deposition, sputtering, spin coating, or casting using the light emitting material according to the present invention. It is preferable to form by point vacuum deposition method, such as it is easy to obtain pinholes as soon as it is obtained.
- the vapor deposition condition varies depending on the compound used, but can generally be selected from the same condition range as that of the hole injection layer.
- the film thickness is preferably in the range of 10 to 40 nm.
- an electron injection layer is provided on the light emitting layer. Also in this case, like the hole injection layer and the light emitting layer, it is preferable to form by a vacuum evaporation method because it is necessary to obtain a homogeneous film. Deposition conditions are It can be selected from the same condition range as the hole injection layer and the light emitting layer.
- a cathode is laminated to obtain an organic EL element.
- the cathode also has a metallic force, and vapor deposition and sputtering can be used. However, vacuum deposition is preferred to protect the underlying organic layer from damage during film formation.
- the above organic EL device is preferably manufactured from the anode to the cathode consistently by a single vacuum.
- the method for forming each layer of the organic EL device of the present invention is not particularly limited. Conventionally known methods such as vacuum deposition and spin coating can be used.
- the organic thin film layer containing the compound represented by the general formula (1) used in the organic EL device of the present invention is a vacuum deposition method, a molecular beam deposition method (MBE method) or a dating method of a solution dissolved in a solvent, It can be formed by a known method such as a spin coating method, a casting method, a bar coating method, or a roll coating method.
- each organic layer of the organic EL device of the present invention is not particularly limited, but is usually preferably in the range of several nm to 1 ⁇ m in order to improve defects such as pinholes and efficiency.
- This compound was identified as AN-26.
- a glass substrate having a thickness of 25 mm ⁇ 75 mm ⁇ 1.1 mm and having an ITO transparent electrode (Zomatic) was ultrasonically cleaned in isopropyl alcohol for 5 minutes, followed by UV ozone cleaning for 30 minutes.
- the glass substrate with the transparent electrode line after cleaning is mounted on the substrate holder of the vacuum deposition apparatus, and first, the transparent electrode line is formed on the surface where the transparent electrode line is formed, covering the transparent electrode with a thickness of 60 nm.
- N One Bis (N, N—Diphenyl 4-Faminophenol)
- N, N, —Diphenyl— 4, 4, —Diamino— 1, 1, — Biphenyl membrane (hereinafter “TPD232 membrane”) Is abbreviated as).
- Alq film having a thickness of 10 nm was formed on this film. This functions as an electron injection layer. Thereafter, Li (Li source: manufactured by SAES Getter Co., Ltd.), which is a reducing dopant, and Alq were subjected to binary evaporation to form an Alq: Li film (film thickness lOnm) as an electron injection layer (cathode).
- Li Li source: manufactured by SAES Getter Co., Ltd.
- Alq Li film (film thickness lOnm) as an electron injection layer (cathode).
- metal A1 was vapor-deposited to form a metal negative electrode, and an organic EL light emitting device was formed.
- a blue light emission of 600 cdZm 2 was obtained at a voltage of 6.7 V and a current density of 10 mA / cm 2 .
- the initial luminance and the 1 OOOcdZm 2 shows the result of measuring the half life of the organic EL device are shown in Table 1.
- An organic EL device was produced in exactly the same manner as in Example 1 except that the compounds shown in Table 1 were used instead of AN-4 as the material for the light emitting layer. And the initial luminance LOOOcdZm 2 shows the result of measuring the half life of the organic EL device are shown in Table 1.
- An organic EL device was prepared in the same manner as in Example 1 except that AN-42 or AN-4 was used as the material of the light-emitting layer, and the following amine compound BD2 was used instead of the amine compound BD1.
- the half-life was measured in the same manner as in Example 1. The results are shown in Table 1.
- Example 1 an organic EL device was prepared in the same manner as in Example 1 except that the following amine compound BD3 was used instead of amine compound BD1 as the material for the light-emitting layer. Lifespan was measured. The results are shown in Table 1.
- An organic EL device was prepared in the same manner as in Example 1 except that an-5 was used instead of AN-4 as the material for the light-emitting layer, and an amine compound BD2 or BD3 was used instead of the amine compound BD 1. Produced. And the initial luminance lOOOcd / m 2 shows the results of measurement of the half lifetime of the organic EL device are shown in Table 1.
- An organic EL device was prepared in the same manner as in Example 1 except that an-6 was used instead of AN-4 as the material for the light-emitting layer, and that the amine compound BD2 was used instead of the amine compound BD 1. .
- Table 1 shows the results of measuring the half-life of this organic EL device with an initial luminance of 1 OOOcd / m 2 .
- the organic EL device using the biphenyl derivative of the present invention has a long lifetime.
- three or more aromatic hydrocarbons are substituted as substituents of the biphenyl skeleton, compared with the case where an-6 having two aromatic hydrocarbon groups is used as a substituent of the biphenyl skeleton.
- the organic EL device using the biphenyl derivative of the present invention having a group has a long life.
- an anthracene 9-yl group is bonded as a substituent of the biphenyl skeleton
- the organic EL using AN—4, AN—5, AN-26, AN—30, AN—43 of the present invention All elements have a long life.
- the organic EL device using the biphenyl derivative of the present invention has a long lifetime.
- the organic EL device of the present invention is useful as a light source for a flat light emitter of a wall-mounted television and a backlight of a display, which are highly practical. They can also be used as organic EL devices, hole injection and transport materials, and as charge transport materials for electrophotographic photoreceptors and organic semiconductors.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP06767501.7A EP1903020B1 (en) | 2005-07-14 | 2006-06-28 | Biphenyl derivatives, organic electroluminescent materials, and organic electroluminescent devices made by using the same |
JP2007524565A JP5032317B2 (ja) | 2005-07-14 | 2006-06-28 | ビフェニル誘導体、有機エレクトロルミネッセンス素子用材料、及びそれを用いた有機エレクトロルミネッセンス素子 |
KR1020087000873A KR101296029B1 (ko) | 2005-07-14 | 2006-06-28 | 바이페닐 유도체, 유기 전기발광 소자용 재료, 및 그것을이용한 유기 전기발광 소자 |
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JP2005-205522 | 2005-07-14 | ||
JP2005205522 | 2005-07-14 |
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WO2007007553A1 true WO2007007553A1 (ja) | 2007-01-18 |
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US (1) | US7560604B2 (ja) |
EP (1) | EP1903020B1 (ja) |
JP (1) | JP5032317B2 (ja) |
KR (1) | KR101296029B1 (ja) |
CN (1) | CN101193842A (ja) |
TW (1) | TW200712037A (ja) |
WO (1) | WO2007007553A1 (ja) |
Cited By (4)
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JPWO2009008343A1 (ja) * | 2007-07-07 | 2010-09-09 | 出光興産株式会社 | 有機エレクトロルミネッセンス素子および有機エレクトロルミネッセンス素子用材料 |
JP2013504884A (ja) * | 2009-09-16 | 2013-02-07 | メルク パテント ゲーエムベーハー | 電子素子製造のための調合物 |
JP2013510104A (ja) * | 2009-11-06 | 2013-03-21 | メルク パテント ゲーエムベーハー | 電子素子のための材料 |
WO2021107030A1 (ja) * | 2019-11-26 | 2021-06-03 | 出光興産株式会社 | 化合物、有機エレクトロルミネッセンス素子及び電子機器 |
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EP2213639B1 (en) * | 2007-11-19 | 2016-04-13 | Idemitsu Kosan Co., Ltd. | Monobenzochrysene derivatives and their use in materials for organic electroluminescent devices |
JPWO2009066666A1 (ja) * | 2007-11-20 | 2011-04-07 | 出光興産株式会社 | 高分子化合物及びそれを用いた有機エレクトロルミネッセンス素子 |
EP2236485A1 (en) * | 2007-12-25 | 2010-10-06 | National University Corporation Nagoya University | Organic material containing oligophenylene skeleton and light-emitting device using the same |
KR101149740B1 (ko) * | 2009-04-08 | 2012-06-01 | 주식회사 동진쎄미켐 | 신규한 페닐렌계 화합물 및 이를 포함하는 유기발광소자 |
KR101761431B1 (ko) * | 2009-08-21 | 2017-07-25 | 토소가부시키가이샤 | 환상 아진 유도체와 그들의 제조방법 및 그들을 구성 성분으로 하는 유기 전계발광소자 |
KR101604513B1 (ko) * | 2009-08-28 | 2016-03-17 | 데이진 가부시키가이샤 | 신규한 부가 화합물, 축합 다고리 방향족 화합물의 정제 및 제조 방법, 유기 반도체막 형성용 용액, 및 신규한 α-디케톤 화합물 |
EP2566875B1 (de) * | 2010-05-03 | 2016-01-06 | Merck Patent GmbH | Formulierungen und elektronische vorrichtungen |
CN105949177B (zh) | 2010-05-03 | 2019-02-01 | 默克专利有限公司 | 制剂和电子器件 |
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JPWO2009008343A1 (ja) * | 2007-07-07 | 2010-09-09 | 出光興産株式会社 | 有機エレクトロルミネッセンス素子および有機エレクトロルミネッセンス素子用材料 |
JP5208937B2 (ja) * | 2007-07-07 | 2013-06-12 | 出光興産株式会社 | 有機エレクトロルミネッセンス素子および有機エレクトロルミネッセンス素子用材料 |
JP2013504884A (ja) * | 2009-09-16 | 2013-02-07 | メルク パテント ゲーエムベーハー | 電子素子製造のための調合物 |
JP2013510104A (ja) * | 2009-11-06 | 2013-03-21 | メルク パテント ゲーエムベーハー | 電子素子のための材料 |
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Also Published As
Publication number | Publication date |
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EP1903020A4 (en) | 2009-04-08 |
EP1903020B1 (en) | 2014-03-19 |
TW200712037A (en) | 2007-04-01 |
JP5032317B2 (ja) | 2012-09-26 |
CN101193842A (zh) | 2008-06-04 |
US20070013296A1 (en) | 2007-01-18 |
EP1903020A1 (en) | 2008-03-26 |
US7560604B2 (en) | 2009-07-14 |
KR20080027341A (ko) | 2008-03-26 |
KR101296029B1 (ko) | 2013-08-12 |
JPWO2007007553A1 (ja) | 2009-01-29 |
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