JP5125502B2 - 有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子 - Google Patents
有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子 Download PDFInfo
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- JP5125502B2 JP5125502B2 JP2007508045A JP2007508045A JP5125502B2 JP 5125502 B2 JP5125502 B2 JP 5125502B2 JP 2007508045 A JP2007508045 A JP 2007508045A JP 2007508045 A JP2007508045 A JP 2007508045A JP 5125502 B2 JP5125502 B2 JP 5125502B2
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- 239000000463 material Substances 0.000 title claims description 96
- 238000005401 electroluminescence Methods 0.000 title description 38
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 127
- 125000001424 substituent group Chemical group 0.000 claims description 113
- 229910052757 nitrogen Inorganic materials 0.000 claims description 78
- 229910052799 carbon Inorganic materials 0.000 claims description 77
- 125000000217 alkyl group Chemical group 0.000 claims description 70
- 125000003118 aryl group Chemical group 0.000 claims description 70
- 125000000623 heterocyclic group Chemical group 0.000 claims description 65
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 62
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 62
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 58
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 56
- 125000003342 alkenyl group Chemical group 0.000 claims description 55
- 229910052760 oxygen Inorganic materials 0.000 claims description 54
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 45
- 229910052717 sulfur Inorganic materials 0.000 claims description 29
- 229910052741 iridium Inorganic materials 0.000 claims description 28
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical group [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 28
- 229910052697 platinum Inorganic materials 0.000 claims description 28
- 150000004696 coordination complex Chemical class 0.000 claims description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 23
- 229910052762 osmium Chemical group 0.000 claims description 22
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical group [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 claims description 22
- 229910052763 palladium Inorganic materials 0.000 claims description 22
- 125000004432 carbon atom Chemical group C* 0.000 claims description 18
- 239000003446 ligand Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 125000004429 atom Chemical group 0.000 claims description 8
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims description 7
- 125000004104 aryloxy group Chemical group 0.000 claims description 6
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 125000004437 phosphorous atom Chemical group 0.000 claims description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims 4
- -1 X 72 Chemical group 0.000 description 216
- 239000010410 layer Substances 0.000 description 192
- 150000001875 compounds Chemical class 0.000 description 159
- 238000000034 method Methods 0.000 description 67
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 34
- 150000001721 carbon Chemical group 0.000 description 34
- 230000000903 blocking effect Effects 0.000 description 31
- 239000010408 film Substances 0.000 description 30
- 238000002347 injection Methods 0.000 description 29
- 239000007924 injection Substances 0.000 description 29
- 230000005525 hole transport Effects 0.000 description 25
- 238000004519 manufacturing process Methods 0.000 description 24
- 239000000758 substrate Substances 0.000 description 24
- 239000000872 buffer Substances 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 239000000203 mixture Substances 0.000 description 18
- 125000005647 linker group Chemical group 0.000 description 17
- 239000011159 matrix material Substances 0.000 description 15
- 238000007740 vapor deposition Methods 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 239000002019 doping agent Substances 0.000 description 13
- 239000000975 dye Substances 0.000 description 13
- 239000011521 glass Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 12
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 12
- 239000012044 organic layer Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- 238000006862 quantum yield reaction Methods 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 9
- 125000002947 alkylene group Chemical group 0.000 description 9
- 125000003277 amino group Chemical group 0.000 description 9
- 125000000732 arylene group Chemical group 0.000 description 9
- 239000000470 constituent Substances 0.000 description 9
- 238000000151 deposition Methods 0.000 description 9
- 239000007772 electrode material Substances 0.000 description 9
- 238000004020 luminiscence type Methods 0.000 description 9
- 229910052749 magnesium Inorganic materials 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- 239000003086 colorant Substances 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 125000003373 pyrazinyl group Chemical group 0.000 description 8
- 125000000714 pyrimidinyl group Chemical group 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 238000005286 illumination Methods 0.000 description 7
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 6
- PYRKKGOKRMZEIT-UHFFFAOYSA-N 2-[6-(2-cyclopropylethoxy)-9-(2-hydroxy-2-methylpropyl)-1h-phenanthro[9,10-d]imidazol-2-yl]-5-fluorobenzene-1,3-dicarbonitrile Chemical compound C1=C2C3=CC(CC(C)(O)C)=CC=C3C=3NC(C=4C(=CC(F)=CC=4C#N)C#N)=NC=3C2=CC=C1OCCC1CC1 PYRKKGOKRMZEIT-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 238000004992 fast atom bombardment mass spectroscopy Methods 0.000 description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- 238000004949 mass spectrometry Methods 0.000 description 6
- 238000000059 patterning Methods 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 6
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical group C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 6
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 238000001771 vacuum deposition Methods 0.000 description 6
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 5
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 150000001787 chalcogens Chemical group 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 125000002883 imidazolyl group Chemical group 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 5
- 150000002894 organic compounds Chemical class 0.000 description 5
- 125000003226 pyrazolyl group Chemical group 0.000 description 5
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical group C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 125000003545 alkoxy group Chemical group 0.000 description 4
- 125000004397 aminosulfonyl group Chemical group NS(=O)(=O)* 0.000 description 4
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 4
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000005842 heteroatom Chemical group 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group 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 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- 125000001425 triazolyl group Chemical group 0.000 description 4
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 description 4
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 3
- 125000004450 alkenylene group Chemical group 0.000 description 3
- 125000004419 alkynylene group Chemical group 0.000 description 3
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 125000004093 cyano group Chemical group *C#N 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 125000006575 electron-withdrawing group Chemical group 0.000 description 3
- 230000005281 excited state Effects 0.000 description 3
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 125000001041 indolyl group Chemical group 0.000 description 3
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- 125000001624 naphthyl group Chemical group 0.000 description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 3
- 150000004866 oxadiazoles Chemical class 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 3
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- 125000000355 1,3-benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 description 2
- GPYDMVZCPRONLW-UHFFFAOYSA-N 1-iodo-4-(4-iodophenyl)benzene Chemical group C1=CC(I)=CC=C1C1=CC=C(I)C=C1 GPYDMVZCPRONLW-UHFFFAOYSA-N 0.000 description 2
- FMKGJQHNYMWDFJ-CVEARBPZSA-N 2-[[4-(2,2-difluoropropoxy)pyrimidin-5-yl]methylamino]-4-[[(1R,4S)-4-hydroxy-3,3-dimethylcyclohexyl]amino]pyrimidine-5-carbonitrile Chemical compound FC(COC1=NC=NC=C1CNC1=NC=C(C(=N1)N[C@H]1CC([C@H](CC1)O)(C)C)C#N)(C)F FMKGJQHNYMWDFJ-CVEARBPZSA-N 0.000 description 2
- LYTMVABTDYMBQK-UHFFFAOYSA-N 2-benzothiophene Chemical compound C1=CC=CC2=CSC=C21 LYTMVABTDYMBQK-UHFFFAOYSA-N 0.000 description 2
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 2
- OGGKVJMNFFSDEV-UHFFFAOYSA-N 3-methyl-n-[4-[4-(n-(3-methylphenyl)anilino)phenyl]phenyl]-n-phenylaniline Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 OGGKVJMNFFSDEV-UHFFFAOYSA-N 0.000 description 2
- NSBVOLBUJPCPFH-UHFFFAOYSA-N 5h-pyrido[3,2-b]indole Chemical compound C1=CN=C2C3=CC=CC=C3NC2=C1 NSBVOLBUJPCPFH-UHFFFAOYSA-N 0.000 description 2
- BPMFPOGUJAAYHL-UHFFFAOYSA-N 9H-Pyrido[2,3-b]indole Chemical group C1=CC=C2C3=CC=CC=C3NC2=N1 BPMFPOGUJAAYHL-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 125000004423 acyloxy group Chemical group 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 2
- 125000005277 alkyl imino group Chemical group 0.000 description 2
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 2
- 125000004414 alkyl thio group Chemical group 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- IZJSTXINDUKPRP-UHFFFAOYSA-N aluminum lead Chemical compound [Al].[Pb] IZJSTXINDUKPRP-UHFFFAOYSA-N 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- 125000005161 aryl oxy carbonyl group Chemical group 0.000 description 2
- 125000004391 aryl sulfonyl group Chemical group 0.000 description 2
- 125000005110 aryl thio group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical group C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004305 biphenyl Chemical group 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- 125000006309 butyl amino group Chemical group 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- XZCJVWCMJYNSQO-UHFFFAOYSA-N butyl pbd Chemical compound C1=CC(C(C)(C)C)=CC=C1C1=NN=C(C=2C=CC(=CC=2)C=2C=CC=CC=2)O1 XZCJVWCMJYNSQO-UHFFFAOYSA-N 0.000 description 2
- 125000004744 butyloxycarbonyl group Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- FIMJSWFMQJGVAM-UHFFFAOYSA-N chloroform;hydrate Chemical compound O.ClC(Cl)Cl FIMJSWFMQJGVAM-UHFFFAOYSA-N 0.000 description 2
- 210000003763 chloroplast Anatomy 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229940127113 compound 57 Drugs 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 125000005366 cycloalkylthio group Chemical group 0.000 description 2
- 125000006639 cyclohexyl carbonyl group Chemical group 0.000 description 2
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Classifications
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- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
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Description
本発明及び本発明の好ましい態様について以下に示す。
(2)前記一般式(5)において、芳香族複素環Bまたは芳香族複素環Dのうち少なくとも一方が6員環であり、他方が5員環であることを特徴とする前記(1)に記載の有機エレクトロルミネッセンス素子材料。
(3)前記一般式(6)において、芳香族複素環Bが6員環であることを特徴とする前記(1)に記載の有機エレクトロルミネッセンス素子材料。
(5)下記一般式(2−1)〜(2−50)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(1)〜(3)のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。
(6)下記一般式(3−1)〜(3−10)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(1)〜(3)のいずれか1項の記載の有機エレクトロルミネッセンス素子材料。
(7)下記一般式(7)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(1)〜(3)、(6)のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。
(8)下記一般式(8)または(9)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(7)に記載の有機エレクトロルミネッセンス素子材料。
(9)下記一般式(10)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(1)〜(8)のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。
(10)下記一般式(11)〜(14)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする前記(8)に記載の有機エレクトロルミネッセンス素子材料。
(11)本発明では、前記一般式(6)のX31−X3−X32によって形成される二座配位子が、下記一般式中、一般式(4−10)、(4−11)、(4−18)、(4−20)、(4−21)または(4−22)で表される部分構造若しくはその互変異性体を部分構造として有することを特徴とする。
(12)Mがイリジウムまたは白金であることを特徴とする前記(1)〜(11)のいずれか1項に記載の有機エレクトロルミネッセンス素子材料。
(17)前記一般式(1A)で表される化合物のZ1が6員環であることを特徴とする前記(16)に記載の有機エレクトロルミネッセンス素子。
(22)前記一般式(1A)で表される化合物が下記一般式(1A−2)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(23)前記一般式(1A)で表される化合物が下記一般式(1A−3)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(24)前記一般式(1A)で表される化合物が下記一般式(1A−4)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(25)前記一般式(1A)で表される化合物が下記一般式(1A−5)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(26)前記一般式(1A)で表される化合物が下記一般式(1A−6)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(27)前記一般式(1A)で表される化合物が下記一般式(1A−7)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(28)前記一般式(1A)で表される化合物が下記一般式(1A−8)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(29)前記一般式(1A)で表される化合物が下記一般式(1A−9)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(30)前記一般式(1A)で表される化合物が下記一般式(1A−10)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(31)前記一般式(1A)で表される化合物が下記一般式(2A−1)〜(2A−10)のいずれかで表される基を少なくとも一つ有することを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(32)前記一般式(1A)で表される化合物が下記一般式(3A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(33)前記一般式(1A)で表される化合物が下記一般式(4A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(34)前記一般式(1A)で表される化合物が下記一般式(5A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(35)前記一般式(1A)で表される化合物が下記一般式(6A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(36)前記一般式(1A)で表される化合物が下記一般式(7A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(37)前記一般式(1A)で表される化合物が下記一般式(8A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(38)前記一般式(1A)で表される化合物が下記一般式(9A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(39)前記一般式(1A)で表される化合物が下記一般式(10A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(40)前記一般式(1A)で表される化合物が下記一般式(11A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(41)前記一般式(1A)で表される化合物が下記一般式(12A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(42)前記一般式(1A)で表される化合物が下記一般式(13A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(43)前記一般式(1A)で表される化合物が下記一般式(14A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(44)前記一般式(1A)で表される化合物が下記一般式(15A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(45)前記一般式(1A)で表される化合物が下記一般式(16A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
(46)前記一般式(1A)で表される化合物が下記一般式(17A)で表されることを特徴とする前記(16)〜(20)のいずれか1項に記載の有機エレクトロルミネッセンス素子。
3 画素
5 走査線
6 データ線
7 電源ライン
10 有機EL素子
11 スイッチングトランジスタ
12 駆動トランジスタ
13 コンデンサ
A 表示部
B 制御部
101 有機EL素子
102 ガラスカバー
105 陰極
106 有機EL層
107 透明電極付きガラス基板
108 窒素ガス
109 捕水剤
本発明に係る前記一般式で表される金属錯体について説明する。
メチル基 25.4
エチル基 42.6
イソプロピル基 59.5
tert−ブチル基 76.2
フェニル基 74.9
メトキシ基 34.0
アミノ基 22.2
ヒドロキシル基 16.7
塩素原子 22.4
臭素原子 26.5
フッ素原子 13.3
トリフルオロメチル基 42.5
前記アルキル基、シクロアルキル基、アルケニル基、アリール基、複素環基または芳香族複素環基は、前記態様(1)で述べたものと同義である。
MS(FAB)m/z:487(M+1)
1H−NMR(400MHz,CDCl3):δ/ppm 7.3−7.5(m、2H)、7.5−7.6(m,4H)、7.7−7.8(m,4H)、7.9−8.0(m,4H)、8.06(d,J=5.1Hz,2H)、8.24(d,J=7.8Hz,2H)、8.56(d,J=5.1Hz,2H)、8.96(s,2H)
(例示化合物A−74の合成)
1H−NMR(400MHz,CDCl3):δ/ppm 7.37(dd,J=4.7Hz,J=8.3Hz,2H)、7.4−7.5(m,2H)、7.5−7.6(m,4H)、7.7−7.8(m,4H)、7.81(dd,J=1.2Hz,J=8.3Hz,2H)、7.9−8.0(m,4H)、8.48(d,J=7.8Hz,2H),8.65(dd,J=1.2Hz,J=4.6Hz,2H)
(例示化合物A−60の合成)
1H−NMR(400MHz,CDCl3):δ/ppm 7.4−7.4(m,4H)、7.4−7.5(m,4H)、7.7−7.8(m,4H)7.9−8.0(m,4H)、8.25(d,J=7.8Hz,2H)、8.57(d,J=5.6Hz,2H)、9.42(s,1H)
(例示化合物A−144の合成)
1H−NMR(400MHz,CDCl3):δ/ppm 1.80(S,12H)、7.27(S,4H)、7.34(dd,J=4.9Hz,J=8.3Hz,2H)、7.3−7.4(m,2H)、7.4−7.5(m,12H)、7.76(dd,J=1.3Hz,J=8.3Hz、2H)、8.45(d,J=7.8Hz,2H)、8.63(dd,J=1.3Hz,J=4.9Hz,2H)
(例示化合物A−143の合成)
1H−NMR(400MHz,CDCl3):δ/ppm 7.46(d,J=5.7Hz,4H)、7.6−7.7(m,4H)、7.8−7.9(m,4H)、8.67(d,J=5.7Hz,4H)、9.51(S,4H)
(例示化合物A−145の合成)
例示化合物A−143の合成において、4,4′−ジクロロ−3,3′−ビピリジルの一方のピリジン環をベンゼンに変更した、3−(2−クロロフェニル)−4−クロロピリジンを用いた以外は同様にして、例示化合物A−145を合成した。
1H−NMR(400MHz,CDCl3):δ/ppm 7.3−7.4(m,2H)、7.6−7.7(m,4H)、7.7−7.8(m,4H)7.8−7.9(m,4H)、8.06(d,J=5.3Hz,2H)、8.23(d,J=7.8Hz,2H)、8.56(d,J=5.3Hz,2H),8.96(S,2H)
なお、上記の合成例以外に、これらの化合物のアザカルバゾール環やその類緑体は、J.Chem.Soc.,Perkin Trans.1,1505−1510(1999)、Pol.J.Chem.,54,1585(1980)、(Tetrahedron
Lett.41(2000),481−484)に記載される合成法に従って合成することができる。合成されたアザカルバゾール環やその類緑体と、芳香環、複素環、アルキル基等の、コア、連結基への導入は、ウルマンカップリング、Pd触媒を用いたカップリング、スズキカップリング等公知の方法を用いることができる。
《陽極》
有機EL素子における陽極としては、仕事関数の大きい(4eV以上)金属、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが好ましく用いられる。このような電極物質の具体例としてはAu等の金属、CuI、インジウムチンオキシド(ITO)、SnO2、ZnO等の導電性透明材料が挙げられる。また、IDIXO(In2O3−ZnO)等非晶質で透明導電膜を作製可能な材料を用いてもよい。陽極はこれらの電極物質を蒸着やスパッタリング等の方法により、薄膜を形成させ、フォトリソグラフィー法で所望の形状のパターンを形成してもよく、あるいはパターン精度をあまり必要としない場合は(100μm以上程度)、上記電極物質の蒸着やスパッタリング時に所望の形状のマスクを介してパターンを形成してもよい。この陽極より発光を取り出す場合には、透過率を10%より大きくすることが望ましく、また陽極としてのシート抵抗は数百Ω/□以下が好ましい。さらに膜厚は材料にもよるが、通常10〜1000nm、好ましくは10〜200nmの範囲で選ばれる。
一方、陰極としては、仕事関数の小さい(4eV以下)金属(電子注入性金属と称する)、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが用いられる。このような電極物質の具体例としては、ナトリウム、ナトリウム−カリウム合金、マグネシウム、リチウム、マグネシウム/銅混合物、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、インジウム、リチウム/アルミニウム混合物、希土類金属等が挙げられる。これらの中で、電子注入性及び酸化等に対する耐久性の点から、電子注入性金属とこれより仕事関数の値が大きく安定な金属である第二金属との混合物、例えば、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、リチウム/アルミニウム混合物、アルミニウム等が好適である。陰極はこれらの電極物質を蒸着やスパッタリング等の方法により薄膜を形成させることにより、作製することができる。また、陰極としてのシート抵抗は数百Ω/□以下が好ましく、膜厚は通常10nm〜5μm、好ましくは50〜200nmの範囲で選ばれる。なお、発光した光を透過させるため、有機EL素子の陽極または陰極のいずれか一方が、透明または半透明であれば発光輝度が向上し好都合である。
注入層は必要に応じて設け、電子注入層と正孔注入層があり、上記のごとく陽極と発光層または正孔輸送層の間、及び陰極と発光層または電子輸送層との間に存在させてもよい。
阻止層は、上記のごとく、有機化合物薄膜の基本構成層の他に必要に応じて設けられるものである。例えば、特開平11−204258号公報、同11−204359号公報、及び「有機EL素子とその工業化最前線(1998年11月30日エヌ・ティー・エス社発行)」の237頁等に記載されている正孔阻止(ホールブロック)層がある。
本発明に係る発光層は、電極または電子輸送層、正孔輸送層から注入されてくる電子及び正孔が再結合して発光する層であり、発光する部分は発光層の層内であっても発光層と隣接層との界面であってもよい。
本発明の有機EL素子の発光層には、以下に示す、ホスト化合物とリン光性化合物(リン光発光性化合物ともいう)が含有されることが好ましく、本発明においては、ホスト化合物として前述した本発明に係る化合物を用いることが好ましい。これにより、より一層発光効率を高くすることができる。また、ホスト化合物として、上記の本発明に係る化合物以外の化合物を含有してもよい。
発光層に使用される材料(以下、発光材料という)としては、上記のホスト化合物を含有すると同時に、リン光性化合物を含有することが好ましい。これにより、より発光効率の高い有機EL素子とすることができる。
正孔輸送層とは正孔を輸送する機能を有する正孔輸送材料からなり、広い意味で正孔注入層、電子阻止層も正孔輸送層に含まれる。正孔輸送層は単層または複数層設けることができる。
電子輸送層とは電子を輸送する機能を有する材料からなり、広い意味で電子注入層、正孔阻止層も電子輸送層に含まれる。電子輸送層は単層または複数層設けることができる。
本発明の有機EL素子は、基体上に形成されているのが好ましい。
本発明の有機EL素子の作製方法の一例として、陽極/正孔注入層/正孔輸送層/発光層/電子輸送層/電子注入層/陰極からなる有機EL素子の作製法について説明する。
《有機EL素子1−1の作製》
陽極としてガラス上にITOを150nm成膜した基板(NHテクノグラス社製:NA−45)にパターニングを行った後、このITO透明電極を設けた透明支持基板をiso−プロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った。
上記の有機EL素子1−1の作製において、表1に記載のように発光ドーパント、発光ホスト、正孔阻止材料を変更した以外は同様にして、有機EL素子1−2〜1−20を作製した。
有機EL素子1−1〜1−20を室温(約23〜25℃)、2.5mA/cm2の定電流条件下による点灯を行い、点灯開始直後の発光輝度(L)[cd/m2]を測定することにより、外部取り出し量子効率(η)を算出した。ここで、発光輝度の測定は、CS−1000(ミノルタ製)を用いた。
有機EL素子1−1〜1−20を室温下、2.5mA/cm2の定電流条件下による連続点灯を行い、初期輝度の半分の輝度になるのに要する時間(τ1/2)を測定した。また、発光寿命は、有機EL素子1−1を100とした時の相対値で表した。
《フルカラー表示装置の作製》
(青色発光素子の作製)
実施例1の有機EL素子1−6を青色発光素子として用いた。
実施例1の有機EL素子1−6において、Ir−1を緑色発光ドーパントとして用い緑色発光素子とした。
実施例1の有機EL素子1−6において、Ir−9を赤色発光ドーパントとして用い赤色発光素子とした。
《フルカラー表示装置の作製》
実施例2の青色発光素子の作製において、有機EL素子1−6を有機EL素子1−8に変更した以外は実施例2と同様にしてフルカラー表示装置を作製した。
《フルカラー表示装置の作製》
実施例2の青色発光素子の作製において、有機EL素子1−6を有機EL素子1−13に変更した以外は実施例2と同様にしてフルカラー表示装置を作製した。
《フルカラー表示装置の作製》
実施例2の青色発光素子の作製において、有機EL素子1−6を有機EL素子1−14に変更した以外は実施例2と同様にしてフルカラー表示装置を作製した。
《白色発光素子及び白色照明装置の作製》
実施例1の透明電極基板の電極を20mm×20mmにパターニングし、その上に実施例1と同様に正孔注入/輸送層としてα−NPDを25nmの厚さで製膜し、さらに、CBPの入った前記加熱ボートと本発明の化合物44の入ったボート及びIr−9の入ったボートをそれぞれ独立に通電して発光ホストであるCBPと発光ドーパントである本発明の化合物44及びIr−9の蒸着速度が100:5:0.6になるように調節し膜厚30nmの厚さになるように蒸着し、発光層を設けた。
《白色発光素子及び白色照明装置の作製》
実施例6の白色発光素子の作製において、本発明の化合物44を47に変更した以外は実施例6と同様にして白色照明装置を作製した。
《白色発光素子及び白色照明装置の作製》
実施例6の白色発光素子の作製において、本発明の化合物44を49に変更した以外は実施例6と同様にして白色照明装置を作製した。
《塗布法による白色発光素子及び白色照明装置の作製》
25mm×25mm×0.5mmのガラス支持基板上に直流電源を用い、スパッタ法にてインジウム錫酸化物(ITO、インジウム/錫=95/5モル比)の陽極を形成した(厚み200nm)。この陽極の表面抵抗は10Ω/□であった。これにポリビニルカルバゾ−ル(正孔輸送性バインダーポリマー)/本発明の化合物44(青発光性オルトメタル化錯体)/トリス(2−フェニルピリジン)イリジウム錯体(緑発光性オルトメタル化錯体:Ir−1)/ビス(2−ベンゾチオフェン[b]−2−イル−ピリジン)アセチルアセトナ−トイリジウム錯体(赤発光性オルトメタル化錯体:Ir−9)/2−(4−ビフェニリル)−5−(4−t−ブチルフェニル)−1,3,4−オキサジアゾ−ル(電子輸送材)=200/2/5/2/50(質量比)を溶解したジクロロエタン溶液をスピンコ−タ−で塗布し、100nmの発光層を得た。この有機化合物層の上にパタ−ニングしたマスク(発光面積が5mm×5mmとなるマスク)を設置し、蒸着装置内で陰極バッファー層としてフッ化リチウム0.5nm及び陰極としてアルミニウム150nmを蒸着して陰極を設けた。陽極、陰極よりそれぞれアルミニウムのリ−ド線を出して発光素子を作製した。該素子を窒素ガスで置換したグロ−ブボックス内に入れ、ガラス製の封止容器で紫外線硬化型接着剤(長瀬チバ製、XNR5493)を用いて封止して照明装置を作製した。
《塗布法による白色発光素子及び白色照明装置の作製》
実施例9の白色発光素子の作製において、本発明の化合物44を53に変更した以外は実施例9と同様にして白色照明装置を作製した。
《塗布法による白色発光素子及び白色照明装置の作製》
実施例9の白色発光素子の作製において、本発明の化合物44を118に変更した以外は実施例9と同様にして白色照明装置を作製した。
《塗布法による白色発光素子及び白色照明装置の作製》
25mm×25mm×0.5mmのガラス支持基板上に直流電源を用い、スパッタ法にてインジウム錫酸化物(ITO、インジウム/錫=95/5モル比)の陽極を形成した(厚み200nm)。この陽極の表面抵抗は10Ω/□であった。これにポリビニルカルバゾ−ル(正孔輸送性バインダーポリマー)/ACZ1(正孔輸送制御材)/本発明の化合物57(青発光性オルトメタル化錯体)/トリス(2−フェニルピリジン)イリジウム錯体(緑発光性オルトメタル化錯体:Ir−1)/ビス(2−ベンゾチオフェン[b]−2−イル−ピリジン)アセチルアセトナ−トイリジウム錯体(赤発光性オルトメタル化錯体:Ir−9)/2−(4−ビフェニリル)−5−(4−t−ブチルフェニル)−1,3,4−オキサジアゾ−ル(電子輸送材)=150/50/2/5/2/50(質量比)を溶解したジクロロエタン溶液をスピンコ−タ−で塗布し、100nmの発光層を得た。この有機化合物層の上にパタ−ニングしたマスク(発光面積が5mm×5mmとなるマスク)を設置し、蒸着装置内で陰極バッファー層としてフッ化リチウム0.5nm及び陰極としてアルミニウム150nmを蒸着して陰極を設けた。陽極、陰極よりそれぞれアルミニウムのリ−ド線を出して発光素子を作成した。該素子を窒素ガスで置換したグロ−ブボックス内に入れ、ガラス製の封止容器で紫外線硬化型接着剤(長瀬チバ製、XNR5493)を用いて封止して照明装置を作製した。
《白色発光素子及び白色照明装置の作製》
実施例12の白色発光素子の作製において、本発明の化合物57を61に変更した以外は実施例12と同様にして白色照明装置を作製した。
《白色発光素子及び白色照明装置の作製》
実施例12の白色発光素子の作製において、正孔輸送制御材ACZ1をACZ2に変更した以外は実施例12と同様にして白色照明装置を作製した。
《有機EL素子2−1〜2−13の作製》
実施例1の有機EL素子1−1において、発光ドーパントをIr−1に変更し、正孔阻止材料を表2に記載のように、変更した以外は同様にして、実施例1と同様にして有機EL素子2−1〜2−13を作製した。
Claims (5)
- 下記一般式(5)又は(6)で表されるオルトメタル錯体であ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材料。
X21は炭素原子または窒素原子を表し、Q21は炭素原子及びX21と共に6員の芳香族炭化水素環または5〜6員の芳香族複素環である環Cを形成する原子群を表す。X22は炭素原子または窒素原子を表し、Q22は窒素原子及びX22と共に5〜6員の芳香族複素環である環Dを形成する原子群を表す。X2はO、S、CH2、CHR、CR2、NR、PR、SiR2、C=O、C=NR、SOまたはSO2を表す。Rはアルキル基、シクロアルキル基、アルケニル基、アリール基、複素環基または芳香族複素環基を表す。ただし、環Aと環C、環Bと環Dが同時に同じものになることはない。)
- 下記一般式(10)で表される部分構造またはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする請求項1に記載の有機エレクトロルミネッセンス素子材料。
- 下記一般式(1-19)、(1-76)、(1-82)、(1-86)、(1-112)、(1-121)、(1-124)、(1-127)、(1-130)、(2-29)、(2-38)、(2-41)、(2-43)、(2-44)、(3-2)、(3-6)、(3-8)または(3-9)で表される部分構造若しくはその互変異性体を部分構造として有するオルトメタル錯体であることを特徴とする請求項1に記載の有機エレクトロルミネッセンス素子材料。
- Mがイリジウムまたは白金であることを特徴とする請求項1〜3までのいずれか一項に記載の有機エレクトロルミネッセンス素子材料。
- 請求項1〜4までのいずれか一項に記載の有機エレクトロルミネッセンス素子材料を含有す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。
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