JP7227141B2 - 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 Download PDFInfo
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- JP7227141B2 JP7227141B2 JP2019542008A JP2019542008A JP7227141B2 JP 7227141 B2 JP7227141 B2 JP 7227141B2 JP 2019542008 A JP2019542008 A JP 2019542008A JP 2019542008 A JP2019542008 A JP 2019542008A JP 7227141 B2 JP7227141 B2 JP 7227141B2
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- 238000005401 electroluminescence Methods 0.000 title claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 128
- -1 arylamine compound Chemical class 0.000 claims description 83
- 230000005525 hole transport Effects 0.000 claims description 32
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 27
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 23
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical group C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 claims description 18
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 15
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 125000004434 sulfur atom Chemical group 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 11
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 11
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 7
- 125000003367 polycyclic group Chemical group 0.000 claims description 5
- 125000000714 pyrimidinyl group Chemical group 0.000 claims description 5
- 125000005493 quinolyl group Chemical group 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 156
- 239000000463 material Substances 0.000 description 80
- 238000002347 injection Methods 0.000 description 39
- 239000007924 injection Substances 0.000 description 39
- 238000000034 method Methods 0.000 description 34
- 238000002156 mixing Methods 0.000 description 21
- 239000010409 thin film Substances 0.000 description 21
- 238000005259 measurement Methods 0.000 description 15
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical class C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 238000007740 vapor deposition Methods 0.000 description 11
- 230000009477 glass transition Effects 0.000 description 10
- 238000004528 spin coating Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical class C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 7
- 239000002356 single layer Substances 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 238000005481 NMR spectroscopy Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 4
- 150000004982 aromatic amines Chemical class 0.000 description 4
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 4
- 125000001164 benzothiazolyl group Chemical group S1C(=NC2=C1C=CC=C2)* 0.000 description 4
- 125000004541 benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 description 4
- 150000001716 carbazoles Chemical group 0.000 description 4
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 125000003914 fluoranthenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC=C4C1=C23)* 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 125000005842 heteroatom Chemical group 0.000 description 4
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 125000001624 naphthyl group Chemical group 0.000 description 4
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 4
- 125000001792 phenanthrenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C=CC12)* 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 125000003226 pyrazolyl group Chemical group 0.000 description 4
- 125000001725 pyrenyl group Chemical group 0.000 description 4
- 125000006617 triphenylamine group Chemical group 0.000 description 4
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000000641 acridinyl group Chemical group C1(=CC=CC2=NC3=CC=CC=C3C=C12)* 0.000 description 3
- 229910052782 aluminium Inorganic materials 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
- 238000004440 column chromatography Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 229910052805 deuterium Inorganic materials 0.000 description 3
- 125000004431 deuterium atom Chemical group 0.000 description 3
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 125000002541 furyl group Chemical group 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 125000001041 indolyl group Chemical group 0.000 description 3
- 125000005956 isoquinolyl group Chemical group 0.000 description 3
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 3
- 239000012044 organic layer Substances 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 125000004625 phenanthrolinyl group Chemical group N1=C(C=CC2=CC=C3C=CC=NC3=C12)* 0.000 description 3
- 125000004076 pyridyl group Chemical group 0.000 description 3
- 125000000168 pyrrolyl group Chemical group 0.000 description 3
- 150000004322 quinolinols Chemical class 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 125000001544 thienyl group Chemical group 0.000 description 3
- 125000004306 triazinyl group Chemical group 0.000 description 3
- UKSZBOKPHAQOMP-SVLSSHOZSA-N (1e,4e)-1,5-diphenylpenta-1,4-dien-3-one;palladium Chemical compound [Pd].C=1C=CC=CC=1\C=C\C(=O)\C=C\C1=CC=CC=C1.C=1C=CC=CC=1\C=C\C(=O)\C=C\C1=CC=CC=C1 UKSZBOKPHAQOMP-SVLSSHOZSA-N 0.000 description 2
- STTGYIUESPWXOW-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical compound C=12C=CC3=C(C=4C=CC=CC=4)C=C(C)N=C3C2=NC(C)=CC=1C1=CC=CC=C1 STTGYIUESPWXOW-UHFFFAOYSA-N 0.000 description 2
- QLTHUQYHKUFPJO-UHFFFAOYSA-N 2-(4-chlorophenyl)-4,6-bis(2-naphthalen-1-ylphenyl)-1,3-benzoxazole Chemical compound ClC1=CC=C(C=C1)C=1OC2=C(N=1)C(=CC(=C2)C1=C(C=CC=C1)C1=CC=CC2=CC=CC=C12)C1=C(C=CC=C1)C1=CC=CC2=CC=CC=C12 QLTHUQYHKUFPJO-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- ZMCQQCBOZIGNRV-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-[2-(1,2,4-triazol-1-yl)ethyl]benzamide Chemical compound NCC1=CC(OC2=CC=CC(=C2)C(=O)NCCN2C=NC=N2)=NC(=C1)C(F)(F)F ZMCQQCBOZIGNRV-UHFFFAOYSA-N 0.000 description 2
- MWWBYFNNMQXEIQ-UHFFFAOYSA-N 4,6-bis(2-naphthalen-1-ylphenyl)-2-(4-pyridin-3-ylphenyl)-1,3-benzoxazole Chemical compound C1(=CC=CC2=CC=CC=C12)C1=C(C=CC=C1)C1=CC(=CC2=C1N=C(O2)C1=CC=C(C=C1)C=1C=NC=CC=1)C1=C(C=CC=C1)C1=CC=CC2=CC=CC=C12 MWWBYFNNMQXEIQ-UHFFFAOYSA-N 0.000 description 2
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 2
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 2
- WVBJYUPGGNNNLV-UHFFFAOYSA-N CC1(C2=CC=CC=C2C=2C=CC(=CC1=2)N(C1=CC(=C(C=C1)C1=CC=C(C=C1)N(C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=C(C=C1)C1=CC=CC=C1)C Chemical group CC1(C2=CC=CC=C2C=2C=CC(=CC1=2)N(C1=CC(=C(C=C1)C1=CC=C(C=C1)N(C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=C(C=C1)C1=CC=CC=C1)C WVBJYUPGGNNNLV-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ILBXBYILZYAAEO-UHFFFAOYSA-N N-(4-bromo-3-phenylphenyl)-9,9-dimethyl-N-(4-phenylphenyl)fluoren-2-amine Chemical compound C1(=CC=C(C=C1)N(C=1C=C(C(=CC=1)Br)C1=CC=CC=C1)C1=CC=2C(C3=CC=CC=C3C=2C=C1)(C)C)C1=CC=CC=C1 ILBXBYILZYAAEO-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- YQYBUJYBXOVWQW-UHFFFAOYSA-N [3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxyphenyl]-(3,4-dihydro-1H-isoquinolin-2-yl)methanone Chemical compound NCC1=CC(=NC(=C1)C(F)(F)F)OC=1C=C(C=CC=1)C(=O)N1CC2=CC=CC=C2CC1 YQYBUJYBXOVWQW-UHFFFAOYSA-N 0.000 description 2
- UUOYDHJVGOATFJ-UHFFFAOYSA-N [4-(n-(4-phenylphenyl)anilino)phenyl]boronic acid Chemical compound C1=CC(B(O)O)=CC=C1N(C=1C=CC(=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 UUOYDHJVGOATFJ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical class C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 2
- 150000001556 benzimidazoles Chemical class 0.000 description 2
- 125000000499 benzofuranyl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 2
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 2
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 2
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 125000004623 carbolinyl group Chemical group 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 2
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000004866 oxadiazoles Chemical class 0.000 description 2
- 150000005041 phenanthrolines Chemical class 0.000 description 2
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical compound OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 150000003220 pyrenes Chemical class 0.000 description 2
- ABMYEXAYWZJVOV-UHFFFAOYSA-N pyridin-3-ylboronic acid Chemical compound OB(O)C1=CC=CN=C1 ABMYEXAYWZJVOV-UHFFFAOYSA-N 0.000 description 2
- 125000000547 substituted alkyl group Chemical group 0.000 description 2
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000003918 triazines Chemical class 0.000 description 2
- DETFWTCLAIIJRZ-UHFFFAOYSA-N triphenyl-(4-triphenylsilylphenyl)silane Chemical compound C1=CC=CC=C1[Si](C=1C=CC(=CC=1)[Si](C=1C=CC=CC=1)(C=1C=CC=CC=1)C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 DETFWTCLAIIJRZ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- PXLYGWXKAVCTPX-UHFFFAOYSA-N 1,2,3,4,5,6-hexamethylidenecyclohexane Chemical class C=C1C(=C)C(=C)C(=C)C(=C)C1=C PXLYGWXKAVCTPX-UHFFFAOYSA-N 0.000 description 1
- XNCMQRWVMWLODV-UHFFFAOYSA-N 1-phenylbenzimidazole Chemical compound C1=NC2=CC=CC=C2N1C1=CC=CC=C1 XNCMQRWVMWLODV-UHFFFAOYSA-N 0.000 description 1
- ZABORCXHTNWZRV-UHFFFAOYSA-N 10-[4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl]phenoxazine Chemical compound O1C2=CC=CC=C2N(C2=CC=C(C=C2)C2=NC(=NC(=N2)C2=CC=CC=C2)C2=CC=CC=C2)C2=C1C=CC=C2 ZABORCXHTNWZRV-UHFFFAOYSA-N 0.000 description 1
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Natural products C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 1
- IVCGJOSPVGENCT-UHFFFAOYSA-N 1h-pyrrolo[2,3-f]quinoline Chemical class N1=CC=CC2=C(NC=C3)C3=CC=C21 IVCGJOSPVGENCT-UHFFFAOYSA-N 0.000 description 1
- PRWATGACIORDEL-UHFFFAOYSA-N 2,4,5,6-tetra(carbazol-9-yl)benzene-1,3-dicarbonitrile Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=C(C#N)C(N2C3=CC=CC=C3C3=CC=CC=C32)=C(N2C3=CC=CC=C3C3=CC=CC=C32)C(N2C3=CC=CC=C3C3=CC=CC=C32)=C1C#N PRWATGACIORDEL-UHFFFAOYSA-N 0.000 description 1
- GEQBRULPNIVQPP-UHFFFAOYSA-N 2-[3,5-bis(1-phenylbenzimidazol-2-yl)phenyl]-1-phenylbenzimidazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2N=C1C1=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=CC(C=2N(C3=CC=CC=C3N=2)C=2C=CC=CC=2)=C1 GEQBRULPNIVQPP-UHFFFAOYSA-N 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- WXNYCQRAJCGMGJ-UHFFFAOYSA-N 2-phenyl-n-(2-phenylphenyl)-n-[4-[4-(2-phenyl-n-(2-phenylphenyl)anilino)phenyl]phenyl]aniline Chemical compound C1=CC=CC=C1C1=CC=CC=C1N(C=1C(=CC=CC=1)C=1C=CC=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C(=CC=CC=2)C=2C=CC=CC=2)C=2C(=CC=CC=2)C=2C=CC=CC=2)C=C1 WXNYCQRAJCGMGJ-UHFFFAOYSA-N 0.000 description 1
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 1
- HAEQAUJYNHQVHV-UHFFFAOYSA-N 3-[4-(aminomethyl)-6-(trifluoromethyl)pyridin-2-yl]oxy-N-phenylbenzamide Chemical compound NCC1=CC(=NC(=C1)C(F)(F)F)OC=1C=C(C(=O)NC2=CC=CC=C2)C=CC=1 HAEQAUJYNHQVHV-UHFFFAOYSA-N 0.000 description 1
- OGGKVJMNFFSDEV-UHFFFAOYSA-N 3-methyl-n-[4-[4-(n-(3-methylphenyl)anilino)phenyl]phenyl]-n-phenylaniline Chemical class 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 1
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 description 1
- FJXNABNMUQXOHX-UHFFFAOYSA-N 4-(9h-carbazol-1-yl)-n,n-bis[4-(9h-carbazol-1-yl)phenyl]aniline Chemical compound C12=CC=CC=C2NC2=C1C=CC=C2C(C=C1)=CC=C1N(C=1C=CC(=CC=1)C=1C=2NC3=CC=CC=C3C=2C=CC=1)C(C=C1)=CC=C1C1=C2NC3=CC=CC=C3C2=CC=C1 FJXNABNMUQXOHX-UHFFFAOYSA-N 0.000 description 1
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- HLHZXKZAUOCJQI-UHFFFAOYSA-N c1ccc(cc1)-c1ccc(cc1)-c1nc2c(cc(cc2o1)-c1cc2ccccc2c2ccccc12)-c1ccc(cc1)-c1cccnc1 Chemical compound c1ccc(cc1)-c1ccc(cc1)-c1nc2c(cc(cc2o1)-c1cc2ccccc2c2ccccc12)-c1ccc(cc1)-c1cccnc1 HLHZXKZAUOCJQI-UHFFFAOYSA-N 0.000 description 1
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- XEXYATIPBLUGSF-UHFFFAOYSA-N phenanthro[9,10-b]pyridine-2,3,4,5,6,7-hexacarbonitrile Chemical group N1=C(C#N)C(C#N)=C(C#N)C2=C(C(C#N)=C(C(C#N)=C3)C#N)C3=C(C=CC=C3)C3=C21 XEXYATIPBLUGSF-UHFFFAOYSA-N 0.000 description 1
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- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
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- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 150000001651 triphenylamine derivatives Chemical class 0.000 description 1
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 1
- 235000019798 tripotassium phosphate Nutrition 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing aromatic rings
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- C07D263/54—Benzoxazoles; Hydrogenated benzoxazoles
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- C07D277/62—Benzothiazoles
- C07D277/64—Benzothiazoles with only hydrocarbon or substituted hydrocarbon radicals attached in position 2
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Description
そして、熱活性化遅延蛍光(TADF)による発光を利用する素子も開発されている。2011年に九州大学の安達らは、熱活性化遅延蛍光材料を用いた素子によって5.3%の外部量子効率を実現させた。(例えば、非特許文献3参照)
本発明者らは、特定の構造を有するアリールアミン化合物を正孔輸送層の材料として選択すると、陽極側から注入された正孔を効率良く輸送できるという知見を得た。更に、特定の構造を有するベンゾアゾール誘導体を電子輸送層の材料として選択すると、発光層へ電子を効率良く注入・輸送できるという知見も得た。
そして、かかるアリールアミン化合物とベンゾアゾール誘導体の組み合わせに対して更に種々の材料を組み合わせ、キャリアバランスが精緻化された材料の組み合わせを検討し、素子の特性評価を鋭意行った。その結果、本発明を完成するに至った
Ar3とAr4は、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよく、Ar3またはAr4はAr3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよい。
本発明によれば、従来の有機EL素子の発光効率および駆動電圧、そして耐久性を改良することができる。
窒素置換した反応容器に、(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)-(6-ブロモビフェニル-3-イル)アミン10.0g、4-{(ビフェニル-4-イル)-フェニルアミノ}フェニルボロン酸7.9g、テトラキストリフェニルホスフィンパラジウム(0)0.60g、炭酸カリウム5.0g、トルエン80ml、エタノール40ml、水30mlを加えて加熱し、100℃で一晩撹拌した。冷却し、分液操作により有機層を採取した後、濃縮し、カラムクロマトグラフ(担体:シリカゲル、溶離液:ジクロロメタン/ヘプタン)によって精製することにより、4-{(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)アミノ}-4'-(ビフェニル-4-イル-フェニルアミノ)-2-フェニル-ビフェニル(化合物1-7)の白色粉体8.30g(収率49%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.72-7.60(2H)、7.59-7.52(2H)、7.51-7.10(35)、7.09-6.90(3H)、1.56(6H)。
実施例1において、4-{(ビフェニル-4-イル)-フェニルアミノ}フェニルボロン酸に代えて、4-(ジフェニルアミノ)フェニルボロン酸を用いて同様の条件で反応を行うことによって4-{(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)アミノ}-4'-(ジフェニルアミノ)-2-フェニル-ビフェニル(化合物1-11)の白色粉体11.5g(収率75%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.71-7.64(4H)、7.58-7.56(2H)、7.49-6.94(32)、1.51(6H)。
実施例1において、(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)-(6-ブロモビフェニル-3-イル)アミンに代えて、(9,9-ジメチルフルオレン-2-イル)-フェニル-(6-ブロモビフェニル-3-イル)アミンを用い、同様の条件で反応を行うことによって4-{(9,9-ジメチルフルオレン-2-イル)-フェニルアミノ}-4'-(ビフェニル-4-イル-フェニルアミノ)-2-フェニル-ビフェニル(化合物1-14)の白色粉体10.2g(収率69%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.69-7.59(4H)、7.48-7.42(4H)、7.37-6.98(30)、1.49(6H)。
融点 ガラス転移点
実施例1の化合物 観測されず 125℃
実施例2の化合物 観測されず 117℃
実施例3の化合物 観測されず 114℃
仕事関数
実施例1の化合物 5.57eV
実施例2の化合物 5.62eV
実施例3の化合物 5.59eV
反応容器に2-(4-クロロ-フェニル)-4,6-ビス(ナフタレン-1-イル-フェニル)-ベンゾオキサゾール4.5g、3-ピリジルボロン酸1.0g、ビス(ジベンジリデンアセトン)パラジウム(0)0.32g、トリシクロヘキシルホスフィン0.4g、リン酸三カリウム4.7gを仕込み、一晩還流撹拌した。放冷した後、分液、水層から酢酸エチルにて抽出を行った後、濃縮、得られた粗生成物をカラムクロマトグラフ(担体:シリカゲル、溶離液:ジクロロメタン/酢酸エチル)によって精製した後、ジクロロメタン/メタノールによる晶析を行うことで、4,6-ビス(ナフタレン-1-イル-フェニル)-2-{4-(ピリジン-3-イル)-フェニル}-ベンゾオキサゾール(化合物2-1)の白色粉体1.8g(収率38%)を得た。
1H-NMR(CDCl3)で以下の32個の水素のシグナルを検出した。
δ(ppm)=8.98(1H)、8.68(1H)、8.52(2H)、8.34(2H)、8.12(1H)、8.07-7.89(10H)、7.82(2H)、7.76(2H)、7.69(2H)、7.64(9H)。
実施例6において2-(4-クロロフェニル)-4,6-ビス(ナフタレン-1-イルフェニル)-ベンゾオキサゾールに代えて、2-(4-クロロ-フェニル)-6-(フェナンスレン-9-イル)-4-{4-(ピリジン-3-イル)-フェニル}-ベンゾオキサゾールを用い、3-ピリジルボロン酸に代えて、フェニルボロン酸を用い、ビス(ジベンジリデンアセトン)パラジウム(0)に代えて、トリス(ジベンジリデンアセトン)パラジウム(0)を用い、同様の条件で反応を行うことによって、2-(ビフェニル-4-イル)-6-(フェナンスレン-9-イル)-4-{4-(ピリジン-3-イル)-フェニル}-ベンゾオキサゾール(化合物1-118)の白色粉体4.3g(収率67%)を得た。
1H-NMR(CDCl3)で以下の28個の水素のシグナルを検出した。
δ(ppm)=8.98(1H)、8.86(1H)、8.80(1H)、8.64(1H)、8.46(2H)、8.32(2H)、8.07(1H)、7.98(2H)、7.88-7.57(13H)、7.52(2H)、7.44(2H)。
融点 ガラス転移点
実施例6の化合物 観測されず 128℃
実施例7の化合物 観測されず 132℃
仕事関数
実施例6の化合物 6.34 eV
実施例7の化合物 6.43 eV
比較のために、実施例10において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて下記構造式の化合物(HTM-1)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて上記構造式の化合物(HTM-1)を用いて、かつ電子輸送層7の材料として実施例6の化合物(2-1)に代えて実施例7の化合物(2-118)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて下記構造式の化合物(HTM-2)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて上記構造式の化合物(HTM-2)を用いて、かつ電子輸送層7の材料として実施例6の化合物(2-1)に代えて実施例7の化合物(2-118)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、電子輸送層7の材料として実施例6の化合物(2-1)に代えて下記構造式の化合物(ETM-2)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、正孔輸送層4の材料として実施例1の化合物(1-7)に代えて実施例2の化合物(1-11)を用いて、かつ電子輸送層7の材料として実施例6の化合物(2-1)に代えて上記構造式の化合物(ETM-2)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例10において、正孔輸送層4の材料として実施例1の化合物(1-7)に代えて実施例3の化合物(1-14)を用いて、かつ電子輸送層7の材料として実施例6の化合物(2-1)に代えて上記構造式の化合物(ETM-2)を用いた以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
2 透明陽極
3 正孔注入層
4 正孔輸送層
5 電子阻止層
6 発光層
7 電子輸送層
8 電子注入層
9 陰極
Claims (2)
- 少なくとも陽極、正孔輸送層、発光層、電子輸送層及び陰極をこの順に有し、前記正孔輸送層と前記発光層との間に電子阻止層を有する有機エレクトロルミネッセンス素子において、前記正孔輸送層が下記一般式(1)で表されるアリールアミン化合物を含有し、前記電子輸送層が下記一般式(3)で表されるベンゾアゾール環構造を有する化合物を含有し、前記電子阻止層が下記一般式(4)で表されるアリールアミン化合物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。
(式中、Ar1~Ar5は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基を表す。Ar6~Ar8は相互に同一でも異なってもよく、水素原子または置換もしくは無置換の芳香族炭化水素基を表し、Ar6~Ar8のうち少なくとも2つ以上が水素原子である。n1は0、1または2を表す。Ar3とAr4は、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよい。Ar3またはAr4はAr3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよい。)
(式中、Ar 11 、Ar 12 は相互に同一でも異なっていてもよく、水素原子、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアルキル基を表し、ただし、Ar 11 及びAr 12 の少なくとも1つは水素原子でなく、Ar 11 ,Ar 12 の芳香族複素環は、ピリミジニル基以外である。Y 2 は置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアルキル基を表し、ただし、Y 2 の芳香族複素環基はキノリル基以外であり、Y 2 の置換基は、ピリミジニル基以外である。Xは酸素原子または硫黄原子を表す。)
(式中、Ar 13 ~Ar 16 は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表す。) - 前記アリールアミン化合物が下記一般式(1a)で表されることを特徴とする
請求項1記載の有機エレクトロルミネッセンス素子。
(式中、Ar1~Ar5は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基を表す。Ar6~Ar8は相互に同一でも異なってもよく、水素原子または置換もしくは無置換の芳香族炭化水素基を表し、Ar6~Ar8のうち少なくとも2つ以上が水素原子である。n1は0、1または2を表す。Ar3とAr4は、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよい。Ar3またはAr4はAr3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、置換もしくは無置換のメチレン基、酸素原子、または硫黄原子を介して互いに結合して環を形成してもよい。)
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TWI822672B (zh) * | 2017-03-15 | 2023-11-21 | 日商保土谷化學工業股份有限公司 | 有機電致發光元件 |
EP3890043A4 (en) * | 2018-11-29 | 2022-08-24 | Hodogaya Chemical Co., Ltd. | COMPOUND WITH AZABENZOXAZOLE RING STRUCTURE AND ORGANIC ELECTROLUMINESCENT ELEMENT |
CN110105350A (zh) * | 2019-05-21 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | 有机发光材料及其制备方法、有机发光器件 |
CN113896740A (zh) * | 2021-10-27 | 2022-01-07 | 武汉华星光电半导体显示技术有限公司 | 一种有机化合物及其制备方法、发光器件 |
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CN111095588B (zh) | 2023-11-17 |
KR102724791B1 (ko) | 2024-10-31 |
EP3683852A1 (en) | 2020-07-22 |
JPWO2019054233A1 (ja) | 2020-08-27 |
TW201920602A (zh) | 2019-06-01 |
US20200207748A1 (en) | 2020-07-02 |
US11578065B2 (en) | 2023-02-14 |
WO2019054233A1 (ja) | 2019-03-21 |
EP3683852A4 (en) | 2021-06-23 |
EP3683852B1 (en) | 2023-11-22 |
KR20200051720A (ko) | 2020-05-13 |
TWI790280B (zh) | 2023-01-21 |
CN111095588A (zh) | 2020-05-01 |
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