CN111675697A - Organic electroluminescent material and device thereof - Google Patents
Organic electroluminescent material and device thereof Download PDFInfo
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- CN111675697A CN111675697A CN201910173864.6A CN201910173864A CN111675697A CN 111675697 A CN111675697 A CN 111675697A CN 201910173864 A CN201910173864 A CN 201910173864A CN 111675697 A CN111675697 A CN 111675697A
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- 239000000463 material Substances 0.000 title claims abstract description 52
- 150000001875 compounds Chemical class 0.000 claims abstract description 70
- 125000004432 carbon atom Chemical group C* 0.000 claims description 181
- -1 phosphino groups Chemical group 0.000 claims description 76
- 239000010410 layer Substances 0.000 claims description 68
- 125000003118 aryl group Chemical group 0.000 claims description 41
- 125000001072 heteroaryl group Chemical group 0.000 claims description 35
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 239000001257 hydrogen Substances 0.000 claims description 17
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 16
- 229910052805 deuterium Inorganic materials 0.000 claims description 16
- 239000012044 organic layer Substances 0.000 claims description 16
- 125000003342 alkenyl group Chemical group 0.000 claims description 15
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 15
- 150000002431 hydrogen Chemical class 0.000 claims description 15
- 125000003545 alkoxy group Chemical group 0.000 claims description 14
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 14
- 125000001424 substituent group Chemical group 0.000 claims description 14
- 125000002252 acyl group Chemical group 0.000 claims description 13
- 125000005103 alkyl silyl group Chemical group 0.000 claims description 13
- 125000005104 aryl silyl group Chemical group 0.000 claims description 13
- 125000004104 aryloxy group Chemical group 0.000 claims description 13
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 13
- 125000004404 heteroalkyl group Chemical group 0.000 claims description 13
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 claims description 13
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims description 13
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 12
- 125000003277 amino group Chemical group 0.000 claims description 11
- 125000002843 carboxylic acid group Chemical group 0.000 claims description 11
- 125000004185 ester group Chemical group 0.000 claims description 11
- 229910052736 halogen Inorganic materials 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 239000003446 ligand Substances 0.000 claims description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 10
- XFXPMWWXUTWYJX-UHFFFAOYSA-N isonitrile group Chemical group N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 9
- 125000002560 nitrile group Chemical group 0.000 claims description 9
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- SLGBZMMZGDRARJ-UHFFFAOYSA-N Triphenylene Natural products C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C2=C1 SLGBZMMZGDRARJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 125000005580 triphenylene group Chemical group 0.000 claims description 6
- 238000009472 formulation Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 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 claims description 4
- 125000000732 arylene group Chemical group 0.000 claims description 4
- 235000010290 biphenyl Nutrition 0.000 claims description 4
- 239000004305 biphenyl Substances 0.000 claims description 4
- 125000005549 heteroarylene group Chemical group 0.000 claims description 4
- 150000002527 isonitriles Chemical class 0.000 claims description 4
- 125000001624 naphthyl group Chemical group 0.000 claims description 4
- 150000002825 nitriles Chemical class 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 claims description 3
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 3
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 claims description 2
- 150000004696 coordination complex Chemical class 0.000 claims description 2
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 claims description 2
- 125000005567 fluorenylene group Chemical group 0.000 claims description 2
- 125000004957 naphthylene group Chemical group 0.000 claims description 2
- 125000005561 phenanthryl group Chemical group 0.000 claims description 2
- 125000005562 phenanthrylene group Chemical group 0.000 claims description 2
- FVZVCSNXTFCBQU-UHFFFAOYSA-N phosphanyl Chemical group [PH2] FVZVCSNXTFCBQU-UHFFFAOYSA-N 0.000 claims description 2
- 125000000168 pyrrolyl group Chemical group 0.000 claims description 2
- 125000006836 terphenylene group Chemical group 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 15
- 239000007787 solid Substances 0.000 description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 230000003111 delayed effect Effects 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 238000006467 substitution reaction Methods 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000007924 injection Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 150000003384 small molecules Chemical class 0.000 description 7
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical compound CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 6
- 230000005525 hole transport Effects 0.000 description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 239000012634 fragment Substances 0.000 description 5
- 125000005842 heteroatom Chemical group 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 125000005259 triarylamine group Chemical group 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical group C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- SKEDXQSRJSUMRP-UHFFFAOYSA-N lithium;quinolin-8-ol Chemical compound [Li].C1=CN=C2C(O)=CC=CC2=C1 SKEDXQSRJSUMRP-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WIUZHVZUGQDRHZ-UHFFFAOYSA-N [1]benzothiolo[3,2-b]pyridine Chemical compound C1=CN=C2C3=CC=CC=C3SC2=C1 WIUZHVZUGQDRHZ-UHFFFAOYSA-N 0.000 description 3
- 125000000304 alkynyl group Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 125000000477 aza group Chemical group 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene sulfoxide Natural products C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 2
- 125000004343 1-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C([H])([H])[H] 0.000 description 2
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 2
- SFKMVPQJJGJCMI-UHFFFAOYSA-N 2-chloro-4-phenylquinazoline Chemical compound C=12C=CC=CC2=NC(Cl)=NC=1C1=CC=CC=C1 SFKMVPQJJGJCMI-UHFFFAOYSA-N 0.000 description 2
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 2
- SUYCTEJBRSFZCD-UHFFFAOYSA-N 9h-carbazole;quinazoline Chemical compound N1=CN=CC2=CC=CC=C21.C1=CC=C2C3=CC=CC=C3NC2=C1 SUYCTEJBRSFZCD-UHFFFAOYSA-N 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical group C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 125000006615 aromatic heterocyclic group Chemical group 0.000 description 2
- CUFNKYGDVFVPHO-UHFFFAOYSA-N azulene Chemical compound C1=CC=CC2=CC=CC2=C1 CUFNKYGDVFVPHO-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 229940125904 compound 1 Drugs 0.000 description 2
- 229920000547 conjugated polymer Polymers 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- DHFABSXGNHDNCO-UHFFFAOYSA-N dibenzoselenophene Chemical compound C1=CC=C2C3=CC=CC=C3[se]C2=C1 DHFABSXGNHDNCO-UHFFFAOYSA-N 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- VVVPGLRKXQSQSZ-UHFFFAOYSA-N indolo[3,2-c]carbazole Chemical compound C1=CC=CC2=NC3=C4C5=CC=CC=C5N=C4C=CC3=C21 VVVPGLRKXQSQSZ-UHFFFAOYSA-N 0.000 description 2
- 229960005544 indolocarbazole Drugs 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
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000003564 m-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(C#N)=C1[H])C([H])([H])* 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 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
- 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
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 125000006504 o-cyanobenzyl group Chemical group [H]C1=C([H])C(C#N)=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000013086 organic photovoltaic Methods 0.000 description 2
- 125000006505 p-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C#N)C([H])([H])* 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical group C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical group C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- JWVCLYRUEFBMGU-UHFFFAOYSA-N quinazoline Chemical compound N1=CN=CC2=CC=CC=C21 JWVCLYRUEFBMGU-UHFFFAOYSA-N 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000012312 sodium hydride Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 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
- 238000012360 testing method Methods 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
- KTZQTRPPVKQPFO-UHFFFAOYSA-N 1,2-benzoxazole Chemical compound C1=CC=C2C=NOC2=C1 KTZQTRPPVKQPFO-UHFFFAOYSA-N 0.000 description 1
- HWIATMHDQVGMFQ-UHFFFAOYSA-N 1,3-azaborinine Chemical compound B1=CC=CN=C1 HWIATMHDQVGMFQ-UHFFFAOYSA-N 0.000 description 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- OBUDOIAYABJUHQ-UHFFFAOYSA-N 1,4-azaborinine Chemical compound B1=CC=NC=C1 OBUDOIAYABJUHQ-UHFFFAOYSA-N 0.000 description 1
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical compound N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 1
- BNRDGHFESOHOBF-UHFFFAOYSA-N 1-benzoselenophene Chemical compound C1=CC=C2[se]C=CC2=C1 BNRDGHFESOHOBF-UHFFFAOYSA-N 0.000 description 1
- 125000004973 1-butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000004134 1-norbornyl group Chemical group [H]C1([H])C([H])([H])C2(*)C([H])([H])C([H])([H])C1([H])C2([H])[H] 0.000 description 1
- OWPJBAYCIXEHFA-UHFFFAOYSA-N 1-phenyl-3-(3-phenylphenyl)benzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=C(C=CC=2)C=2C=CC=CC=2)=C1 OWPJBAYCIXEHFA-UHFFFAOYSA-N 0.000 description 1
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 1
- BAXOFTOLAUCFNW-UHFFFAOYSA-N 1H-indazole Chemical compound C1=CC=C2C=NNC2=C1 BAXOFTOLAUCFNW-UHFFFAOYSA-N 0.000 description 1
- IEBQZJXMAOMNBO-UHFFFAOYSA-N 1h-indole;pyridine Chemical compound C1=CC=NC=C1.C1=CC=C2NC=CC2=C1 IEBQZJXMAOMNBO-UHFFFAOYSA-N 0.000 description 1
- XWIYUCRMWCHYJR-UHFFFAOYSA-N 1h-pyrrolo[3,2-b]pyridine Chemical compound C1=CC=C2NC=CC2=N1 XWIYUCRMWCHYJR-UHFFFAOYSA-N 0.000 description 1
- VEPOHXYIFQMVHW-XOZOLZJESA-N 2,3-dihydroxybutanedioic acid (2S,3S)-3,4-dimethyl-2-phenylmorpholine Chemical compound OC(C(O)C(O)=O)C(O)=O.C[C@H]1[C@@H](OCCN1C)c1ccccc1 VEPOHXYIFQMVHW-XOZOLZJESA-N 0.000 description 1
- 125000005810 2,5-xylyl group Chemical group [H]C1=C([H])C(=C(*)C([H])=C1C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- SFFSGPCYJCMDJM-UHFFFAOYSA-N 2-[2-(3-oxo-1,2-benzoselenazol-2-yl)ethyl]-1,2-benzoselenazol-3-one Chemical compound [se]1C2=CC=CC=C2C(=O)N1CCN1C(=O)C(C=CC=C2)=C2[se]1 SFFSGPCYJCMDJM-UHFFFAOYSA-N 0.000 description 1
- 125000006280 2-bromobenzyl group Chemical group [H]C1=C([H])C(Br)=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- 125000006282 2-chlorobenzyl group Chemical group [H]C1=C([H])C(Cl)=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000006290 2-hydroxybenzyl group Chemical group [H]OC1=C(C([H])=C([H])C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000006481 2-iodobenzyl group Chemical group [H]C1=C([H])C(I)=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/14—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D421/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having selenium, tellurium, or halogen atoms as ring hetero atoms
- C07D421/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having selenium, tellurium, or halogen atoms as ring hetero atoms containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/04—Ortho-condensed systems
- C07D491/044—Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
- C07D491/048—Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring the oxygen-containing ring being five-membered
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D495/14—Ortho-condensed systems
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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
- C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
- C07F7/0812—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
- C07F7/0816—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring said ring comprising Si as a ring atom
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- 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
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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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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
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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
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- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
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Abstract
An organic electroluminescent material and a device thereof are disclosed. The organic electroluminescent material is a novel triarylamine-carbazole fused ring-quinazoline compound. These compounds are useful as host materials in electroluminescent devices and provide better device performance.
Description
Technical Field
The present invention relates to compounds for use in organic electronic devices, such as organic electroluminescent devices. More particularly, it relates to a compound with a novel carbazole triarylamine structure, and an organic electroluminescent device and a compound formula containing the compound.
Background
Organic electronic devices include, but are not limited to, the following classes: organic Light Emitting Diodes (OLEDs), organic field effect transistors (O-FETs), Organic Light Emitting Transistors (OLETs), Organic Photovoltaics (OPVs), dye-sensitized solar cells (DSSCs), organic optical detectors, organic photoreceptors, organic field effect devices (OFQDs), light emitting electrochemical cells (LECs), organic laser diodes, and organic plasma light emitting devices.
In 1987, Tang and Van Slyke of Islamic Kodak reported a two-layer organic electroluminescent device comprising an arylamine hole transport layer and a tris-8-hydroxyquinoline-aluminum layer as an electron transport layer and a light-emitting layer (Applied Physics letters, 1987,51(12): 913-915). Upon biasing the device, green light is emitted from the device. The invention lays a foundation for the development of modern Organic Light Emitting Diodes (OLEDs). The most advanced OLEDs may comprise multiple layers, such as charge injection and transport layers, charge and exciton blocking layers, and one or more light emitting layers between the cathode and anode. Since OLEDs are a self-emissive solid state device, it offers great potential for display and lighting applications. Furthermore, the inherent properties of organic materials, such as their flexibility, may make them well suited for particular applications, such as in the fabrication of flexible substrates.
OLEDs can be classified into three different types according to their light emitting mechanisms. The OLEDs invented by Tang and van Slyke are fluorescent OLEDs. It uses only singlet luminescence. The triplet states generated in the device are wasted through the non-radiative decay channel. Therefore, the Internal Quantum Efficiency (IQE) of fluorescent OLEDs is only 25%. This limitation hinders the commercialization of OLEDs. In 1997, Forrest and Thompson reported phosphorescent OLEDs, which use triplet emission from complex-containing heavy metals as emitters. Thus, singlet and triplet states can be harvested, achieving 100% IQE. Due to its high efficiency, the discovery and development of phosphorescent OLEDs directly contributes to the commercialization of active matrix OLEDs (amoleds). Recently, Adachi has achieved high efficiency through Thermally Activated Delayed Fluorescence (TADF) of organic compounds. These emitters have a small singlet-triplet gap, making it possible for excitons to return from the triplet state to the singlet state. In TADF devices, triplet excitons are able to generate singlet excitons through reverse intersystem crossing, resulting in high IQE.
OLEDs can also be classified into small molecule and polymer OLEDs depending on the form of the material used. Small molecule refers to any organic or organometallic material that is not a polymer. The molecular weight of small molecules can be large, as long as they have a precise structure. Dendrimers with well-defined structures are considered small molecules. The polymeric OLED comprises a conjugated polymer and a non-conjugated polymer having a pendant light-emitting group. Small molecule OLEDs can become polymer OLEDs if post-polymerization occurs during the fabrication process.
Various OLED manufacturing methods exist. Small molecule OLEDs are typically fabricated by vacuum thermal evaporation. Polymer OLEDs are fabricated by solution processes such as spin coating, ink jet printing and nozzle printing. Small molecule OLEDs can also be made by solution processes if the material can be dissolved or dispersed in a solvent.
The light emitting color of the OLED can be realized by the structural design of the light emitting material. An OLED may comprise one light emitting layer or a plurality of light emitting layers to achieve a desired spectrum. Green, yellow and red OLEDs, phosphorescent materials have been successfully commercialized. Blue phosphorescent devices still have the problems of blue unsaturation, short device lifetime, high operating voltage, and the like. Commercial full-color OLED displays typically employ a hybrid strategy, using either blue fluorescence and phosphorescent yellow, or red and green. At present, the rapid decrease in efficiency of phosphorescent OLEDs at high luminance is still a problem. In addition, it is desirable to have a more saturated emission spectrum, higher efficiency and longer device lifetime.
KR20160143496A discloses an organic optical device comprising an organic layer comprising an organic optical compound of formula a:
many examples of which are specifically disclosed:
it is clear that the disclosed structures wherein the segment comprising the quinazoline structure must comprise additional fused ring structures linked by a substituted methylene carbon atom and that they do not disclose structures comprising triarylamine structural units. Moreover, the device data disclosed therein show that the device driving voltage is high when used as a red host material.
WO2010110553a2 discloses an organic optical device comprising an organic layer comprising an organic compound of formula B:
specifically disclosed in many examples are:
however, no compound in which a quinazoline is connected to a fused ring carbazole unit is disclosed, and device data disclosed therein show that, as a hole transporting or hole injecting layer, the device driving voltage is as high as 5v or more, and the corresponding light emitting efficiency is also low.
The application potential of carbazole and carbazole derivatives in OLED materials is worthy of continuing intensive research and development. The applicant of the present invention has made intensive studies and has proposed novel carbazole fused ring triarylamine compounds, which can provide better device performance.
Disclosure of Invention
The invention aims to provide a series of novel carbazole fused ring triarylamine compounds to solve at least part of the problems. The compound with a specific structure disclosed by the invention can be used as a host material in an electroluminescent device and can provide better device performance.
According to one embodiment of the present invention, a compound having the structure of formula 1 is disclosed:
wherein, the ring A represents a substituted or unsubstituted aromatic condensed ring with 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaromatic condensed ring with 8 to 30 carbon atoms;
wherein R is3Selected from formula 2:
wherein Ar is1And Ar2Each independently selected from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 5 to 30 carbon atoms;
wherein L is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 carbon atoms;
wherein, X1To X4Each independently selected from CR1Or N;
wherein, Y1To Y4Each independently selected from C, CR2Or N;
R1and R2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0-20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitrile groups, isonitrile groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
wherein R is4Is a substituted or unsubstituted aryl group having 6 to 30 carbon atomsOr a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
According to another embodiment of the present invention, there is also disclosed an electroluminescent device comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, the organic layer comprising the compound having formula 1.
According to another embodiment of the invention, a compound formulation is also disclosed, comprising the compound having the structure of formula 1.
The novel compound with the carbazole triarylamine structure disclosed by the invention has the advantages that the triarylamine fragment is rich in electrons and has excellent hole transport performance. The carbazole quinazoline segment fused with the six-membered ring has excellent electron transport performance and improved stability. The combination of the two shows unexpected excellent characteristics in the balance of hole and electron transport. It appears to have low voltage, high efficiency and long lifetime on the device. Thus, these novel compounds may provide better device performance.
Drawings
FIG. 1 is a schematic representation of an organic light emitting device that can contain the compounds and compound formulations disclosed herein.
Fig. 2 is a schematic view of another organic light emitting device that can contain compounds and compound formulations disclosed herein.
Figure 3 is structural formula 1 showing compounds as disclosed herein.
Detailed Description
OLEDs can be fabricated on a variety of substrates, such as glass, plastic, and metal. Fig. 1 schematically, but without limitation, illustrates an organic light emitting device 100. The figures are not necessarily to scale, and some of the layer structures in the figures may be omitted as desired. The device 100 may include a substrate 101, an anode 110, a hole injection layer 120, a hole transport layer 130, an electron blocking layer 140, an emissive layer 150, a hole blocking layer 160, an electron transport layer 170, an electron injection layer 180, and a cathode 190. The device 100 may be fabricated by sequentially depositing the described layers. The nature and function of the layers, as well as exemplary materials, are described in more detail in U.S. patent US7,279,704B2, columns 6-10, which is incorporated herein by reference in its entirety.
There are more instances of each of these layers. For example, a flexible and transparent substrate-anode combination is disclosed in U.S. Pat. No. 5,844,363, which is incorporated by reference in its entirety. An example of a p-doped hole transport layer is doped with F at a molar ratio of 50:14TCNQ m-MTDATA as disclosed in U.S. patent application publication No. 2003/0230980, which is incorporated by reference in its entirety. Examples of host materials are disclosed in U.S. patent No. 6,303,238 to Thompson et al, which is incorporated by reference in its entirety. An example of an n-doped electron transport layer is BPhen doped with Li at a molar ratio of 1:1, as disclosed in U.S. patent application publication No. 2003/0230980, which is incorporated by reference in its entirety. U.S. Pat. Nos. 5,703,436 and 5,707,745, which are incorporated by reference in their entirety, disclose examples of cathodes including composite cathodes having a thin layer of a metal such as Mg: Ag and an overlying layer of transparent, conductive, sputter-deposited ITO. The principles and use of barrier layers are described in more detail in U.S. patent No. 6,097,147 and U.S. patent application publication No. 2003/0230980, which are incorporated by reference in their entirety. Examples of injection layers are provided in U.S. patent application publication No. 2004/0174116, which is incorporated by reference in its entirety. A description of the protective layer may be found in U.S. patent application publication No. 2004/0174116, which is incorporated by reference in its entirety.
The above-described hierarchical structure is provided via non-limiting embodiments. The function of the OLED may be achieved by combining the various layers described above, or some layers may be omitted entirely. It may also include other layers not explicitly described. Within each layer, a single material or a mixture of materials may be used to achieve optimal performance. Any functional layer may comprise several sub-layers. For example, the light emitting layer may have two layers of different light emitting materials to achieve a desired light emission spectrum.
In one embodiment, an OLED may be described as having an "organic layer" disposed between a cathode and an anode. The organic layer may include one or more layers.
The OLED also requires an encapsulation layer, as shown in fig. 2, which is an exemplary, non-limiting illustration of an organic light emitting device 200, which differs from fig. 1 in that an encapsulation layer 102 may also be included over the cathode 190 to protect against harmful substances from the environment, such as moisture and oxygen. Any material capable of providing an encapsulation function may be used as the encapsulation layer, such as glass or a hybrid organic-inorganic layer. The encapsulation layer should be placed directly or indirectly outside the OLED device. Multilayer film encapsulation is described in U.S. patent US7,968,146B2, the entire contents of which are incorporated herein by reference.
Devices manufactured according to embodiments of the present invention may be incorporated into various consumer products having one or more electronic component modules (or units) of the device. Some examples of such consumer products include flat panel displays, monitors, medical monitors, televisions, billboards, lights for indoor or outdoor lighting and/or signaling, head-up displays, fully or partially transparent displays, flexible displays, smart phones, tablet computers, tablet handsets, wearable devices, smart watches, laptop computers, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, vehicle displays, and tail lights.
The materials and structures described herein may also be used in other organic electronic devices as previously listed.
As used herein, "top" means furthest from the substrate, and "bottom" means closest to the substrate. Where a first layer is described as being "disposed on" a second layer, the first layer is disposed farther from the substrate. Other layers may be present between the first and second layers, unless it is specified that the first layer is "in contact with" the second layer. For example, a cathode can be described as being "disposed on" an anode even though various organic layers are present between the cathode and the anode.
As used herein, "solution processable" means capable of being dissolved, dispersed or transported in and/or deposited from a liquid medium in the form of a solution or suspension.
A ligand may be referred to as "photoactive" when it is believed that the ligand directly contributes to the photoactive properties of the emissive material. A ligand may be referred to as "ancillary" when it is believed that the ligand does not contribute to the photoactive properties of the emissive material, but the ancillary ligand may alter the properties of the photoactive ligand.
It is believed that the Internal Quantum Efficiency (IQE) of fluorescent OLEDs can be limited by delaying fluorescence beyond 25% spin statistics. Delayed fluorescence can generally be divided into two types, i.e., P-type delayed fluorescence and E-type delayed fluorescence. P-type delayed fluorescence results from triplet-triplet annihilation (TTA).
On the other hand, E-type delayed fluorescence does not depend on collision of two triplet states, but on conversion between triplet and singlet excited states. Compounds capable of producing E-type delayed fluorescence need to have a very small mono-triplet gap in order to switch between energy states. Thermal energy can activate a transition from a triplet state back to a singlet state. This type of delayed fluorescence is also known as Thermally Activated Delayed Fluorescence (TADF). A significant feature of TADF is that the retardation component increases with increasing temperature. If the reverse intersystem crossing (IRISC) rate is fast enough to minimize non-radiative decay from the triplet state, then the fraction of the backfill singlet excited state may reach 75%. The total singlet fraction may be 100%, far exceeding 25% of the spin statistics of the electrogenerated excitons.
The delayed fluorescence characteristic of type E can be found in excited complex systems or in single compounds. Without being bound by theory, it is believed that E-type delayed fluorescence requires the light emitting material to have a small mono-triplet energy gap (Δ Ε)S-T). Organic non-metal containing donor-acceptor emissive materials may be able to achieve this. The emission of these materials is generally characterized as donor-acceptor Charge Transfer (CT) type emission. Spatial separation of HOMO from LUMO in these donor-acceptor type compounds generally results in small Δ ES-T. These states may include CT states. Generally, donor-acceptor light emitting materials are constructed by linking an electron donor moiety (e.g., an amino or carbazole derivative) to an electron acceptor moiety (e.g., a six-membered, N-containing, aromatic ring).
Definitions for substituent terms
Halogen or halide-as used herein, includes fluorine, chlorine, bromine and iodine.
Alkyl-comprises both straight and branched chain alkyl groups. Examples of alkyl groups include methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl, n-octadecyl, neopentyl, 1-methylpentyl, 2-methylpentyl, 1-pentylhexyl, 1-butylpentyl, 1-heptyloctyl, 3-methylpentyl. In addition, the alkyl group may be optionally substituted. The carbons in the alkyl chain may be substituted with other heteroatoms. Among the above, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl and neopentyl are preferable.
Cycloalkyl-as used herein, comprises a cyclic alkyl group. Preferred cycloalkyl groups are those containing 4 to 10 ring carbon atoms and include cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4, 4-dimethylcyclohexyl, 1-adamantyl, 2-adamantyl, 1-norbornyl, 2-norbornyl and the like. In addition, the cycloalkyl group may be optionally substituted. The carbon in the ring may be substituted with other heteroatoms.
Alkenyl-as used herein, encompasses both straight and branched chain olefinic groups. Preferred alkenyl groups are those containing 2 to 15 carbon atoms. Examples of the alkenyl group include a vinyl group, an allyl group, a 1-butenyl group, a 2-butenyl group, a 3-butenyl group, a1, 3-butadienyl group, a 1-methylvinyl group, a styryl group, a2, 2-diphenylvinyl group, a 1-methylallyl group, a1, 1-dimethylallyl group, a 2-methylallyl group, a 1-phenylallyl group, a 3, 3-diphenylallyl group, a1, 2-dimethylallyl group, a 1-phenyl-1-butenyl group and a 3-phenyl-1-butenyl group. In addition, alkenyl groups may be optionally substituted.
Alkynyl-as used herein, straight and branched alkynyl groups are contemplated. Preferred alkynyl groups are those containing 2 to 15 carbon atoms. In addition, alkynyl groups may be optionally substituted.
Aryl or aromatic-as used herein, non-fused and fused systems are contemplated. Preferred aryl groups are those containing from 6 to 60 carbon atoms, more preferably from 6 to 20 carbon atoms, and even more preferably from 6 to 12 carbon atoms. Examples of aryl groups include phenyl, biphenyl, terphenyl, triphenylene, tetraphenylene, naphthalene, anthracene, phenalene, phenanthrene, fluorene, pyrene, chicory, perylene and azulene, preferably phenyl, biphenyl, terphenyl, triphenylene, fluorene and naphthalene. In addition, the aryl group may be optionally substituted. Examples of non-fused aryl groups include phenyl, biphenyl-2-yl, biphenyl-3-yl, biphenyl-4-yl, p-terphenyl-4-yl, p-terphenyl-3-yl, p-triphenyl-2-yl, m-terphenyl-4-yl, m-terphenyl-3-yl, m-terphenyl-2-yl, o-tolyl, m-tolyl, p-tolyl, p- (2-phenylpropyl) phenyl, 4 '-methyldiphenyl, 4' -tert-butyl-p-terphenyl-4-yl, o-cumyl, m-cumyl, p-cumyl, 2, 3-xylyl, 3, 4-xylyl, 2, 5-xylyl, mesityl and m-quaterphenyl.
Heterocyclyl or heterocyclic-as used herein, aromatic and non-aromatic cyclic groups are contemplated. Heteroaryl also refers to heteroaryl. Preferred non-aromatic heterocyclic groups are those containing 3 to 7 ring atoms, which include at least one heteroatom such as nitrogen, oxygen and sulfur. The heterocyclic group may also be an aromatic heterocyclic group having at least one hetero atom selected from a nitrogen atom, an oxygen atom, a sulfur atom and a selenium atom.
Heteroaryl-as used herein, non-fused and fused heteroaromatic groups are contemplated which may contain 1 to 5 heteroatoms. Preferred heteroaryl groups are those containing from 3 to 30 carbon atoms, more preferably from 3 to 20 carbon atoms, more preferably from 3 to 12 carbon atoms. Suitable heteroaryl groups include dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolocarbazole, pyridine indole, pyrrolopyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, bisoxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indoline, benzimidazole, indazole, indenozine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, benzothienopyridine, thienobipyridine, benzothiophenopyridine, cinnolinopyrimidine, selenobenzodipyridine, selenobenzene, preferably dibenzothiophene, dibenzofuran, dibenzoselenophene, carbazole, indolocarbazole, imidazole, pyridine, triazine, benzimidazole, 1, 2-azaborine, 1, 3-azaborine, 1, 4-azaborine, borazole, and aza analogues thereof. In addition, the heteroaryl group may be optionally substituted.
Alkoxy-is represented by-O-alkyl. Examples and preferred examples of the alkyl group are the same as those described above. Examples of the alkoxy group having 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms include methoxy, ethoxy, propoxy, butoxy, pentyloxy and hexyloxy. The alkoxy group having 3 or more carbon atoms may be linear, cyclic or branched.
Aryloxy-is represented by-O-aryl or-O-heteroaryl. Examples and preferred examples of aryl and heteroaryl groups are the same as described above. Examples of the aryloxy group having 6 to 40 carbon atoms include a phenoxy group and a biphenyloxy group.
Aralkyl-as used herein, an alkyl group having an aryl substituent. In addition, the aralkyl group may be optionally substituted. Examples of the aralkyl group include benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, 2-phenylisopropyl, phenyl tert-butyl, α -naphthylmethyl, 1- α -naphthylethyl, 2- α -naphthylethyl, 1- α -naphthylisopropyl, 2- α -naphthylisopropyl, β -naphthylmethyl, 1- β -naphthylethyl, 2- β -naphthylethyl, 1- β -naphthylisopropyl, 2- β -naphthylisopropyl, p-methylbenzyl, m-methylbenzyl, o-methylbenzyl, p-chlorobenzyl, m-chlorobenzyl, o-chlorobenzyl, p-bromobenzyl, m-bromobenzyl, o-bromobenzyl, p-iodobenzyl, m-iodobenzyl, o-iodobenzyl, p-hydroxybenzyl, m-hydroxybenzyl, o-hydroxybenzyl, p-aminobenzyl, m-aminobenzyl, o-aminobenzyl, p-nitrobenzyl, m-nitrobenzyl, o-nitrobenzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-2-hydroxy-2-phenylisopropyl and 1-chloro-2-phenylisopropyl. Among the above, benzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl and 2-phenylisopropyl are preferable.
The term "aza" in aza-dibenzofuran, aza-dibenzothiophene, etc., means that one or more C-H groups in the corresponding aromatic moiety are replaced by a nitrogen atom. For example, azatriphenylenes include dibenzo [ f, h ] quinoxalines, dibenzo [ f, h ] quinolines, and other analogs having two or more nitrogens in the ring system. Other nitrogen analogs of the above-described aza derivatives may be readily envisioned by one of ordinary skill in the art, and all such analogs are intended to be encompassed within the terms described herein.
In this disclosure, unless otherwise defined, when any one of the terms in the group consisting of: substituted alkyl, substituted cycloalkyl, substituted heteroalkyl, substituted aralkyl, substituted alkoxy, substituted aryloxy, substituted alkenyl, substituted aryl, substituted heteroaryl, substituted alkylsilyl, substituted arylsilyl, substituted amine, substituted acyl, substituted carbonyl, substituted carboxylic acid, substituted ester, substituted nitrile, substituted isonitrile, substituted sulfanyl, substituted sulfinyl, substituted sulfonyl, substituted phosphino, meaning alkyl, cycloalkyl, heteroalkyl, aralkyl, alkoxy, aryloxy, alkenyl, aryl, heteroaryl, alkylsilyl, arylsilyl, amine, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl and phosphino groups, any of which may be substituted by one or more groups selected from deuterium, unsubstituted alkyl having 1 to 20 carbon atoms, unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, unsubstituted heteroalkyl having 1 to 20 carbon atoms, unsubstituted aralkyl having 7 to 30 carbon atoms, unsubstituted alkoxy having 1 to 20 carbon atoms, unsubstituted aryloxy having 6 to 30 carbon atoms, unsubstituted alkenyl having 2 to 20 carbon atoms, unsubstituted aryl having 6 to 30 carbon atoms, unsubstituted heteroaryl having 3 to 30 carbon atoms, unsubstituted alkylsilyl having 3 to 20 carbon atoms, unsubstituted arylsilyl having 6 to 20 carbon atoms, unsubstituted amine group having 0 to 20 carbon atoms, acyl group, carbonyl group, carboxylic acid group, ester group, nitrile group, isonitrile group, sulfanyl group, sulfinyl group, sulfonyl group, phosphino group, and combinations thereof.
It will be understood that when a molecular fragment is described as a substituent or otherwise attached to another moiety, its name may be written depending on whether it is a fragment (e.g., phenyl, phenylene, naphthyl, dibenzofuranyl) or depending on whether it is an entire molecule (e.g., benzene, naphthalene, dibenzofuran). As used herein, these different ways of specifying substituents or linking fragments are considered to be equivalent.
In the compounds mentioned in the present disclosure, a hydrogen atom may be partially or completely replaced by deuterium. Other atoms such as carbon and nitrogen may also be replaced by their other stable isotopes. Substitution of other stable isotopes in the compounds may be preferred because it enhances the efficiency and stability of the device.
In the compounds mentioned in the present disclosure, polysubstitution is meant to encompass disubstituted substitutions up to the maximum range of available substitutions. When a substituent in a compound mentioned in the present disclosure represents multiple substitution (including di-substitution, tri-substitution, tetra-substitution, etc.), that is, it means that the substituent may exist at a plurality of available substitution positions on its connecting structure, and the substituent existing at each of the plurality of available substitution positions may be the same structure or different structures.
In the compounds mentioned in the present disclosure, adjacent substituents in the compounds cannot be linked to form a ring unless it is defined that the adjacent substituents can be optionally linked to form a ring. The expression that adjacent substituents can optionally be linked to form a ring is intended to be taken to mean that the two groups are linked to each other by a chemical bond. This is exemplified by the following equation:
further, the expression that adjacent substituents can be optionally connected to form a ring is also intended to be taken to mean that, in the case where one of the two groups represents hydrogen, the second group is bonded at the position to which the hydrogen atom is bonded, thereby forming a ring. This is exemplified by the following equation:
according to one embodiment of the invention, there is disclosed a compound having formula 1:
wherein, the ring A represents a substituted or unsubstituted aromatic condensed ring having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaromatic condensed ring having 8 to 30 carbon atoms;
wherein R is3Having the structure of formula 2:
wherein Ar is1And Ar2Each independently selected from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 5 to 30 carbon atoms;
wherein L is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 carbon atoms;
wherein, X1To X4Each independently selected from CR1Or N;
wherein, Y1To Y4Each independently selected from C, CR2Or N;
R1and R2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted aryl having 3 to 30 carbon atomsSubstituted or unsubstituted alkylsilyl group of 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl group of 6 to 20 carbon atoms, substituted or unsubstituted amine group of 0 to 20 carbon atoms, acyl group, carbonyl group, carboxylic acid group, ester group, nitrile group, isonitrile group, sulfanyl group, sulfinyl group, sulfonyl group, phosphino group, and combinations thereof;
wherein R is4Is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
It is to be noted that, in this embodiment, in formula 1 and formula 2, there is no limitation that adjacent substituents may be optionally linked to form a ring. That is, in formula 1 and formula 2 of this embodiment, R is included4、X1To X4，Y1To Y4，L，Ar1，Ar2In the interior, none of the adjacent substituents can be linked to form a ring. For example, when X in formula 11Is CR1When, X1And R4Can not be connected to form a ring; as another example, when X in formula 11，X2Is simultaneously CR1When two R are present1Can not be connected to form a ring; as another example, Ar in formula 21、Ar2And L cannot be linked to form a ring.
According to one embodiment of the invention, ring A contains only 6-membered ring structures. Exemplary, e.g., naphthyl, is fused from two 6-membered ring phenyl groups, which contain only two 6-membered ring structures and thus fall within the scope of ring a in this example. For example, the fluorenyl group is formed by a fusion of two 6-membered phenyl groups and a 5-membered cyclopentyl group, and it contains two 6-membered ring structures and a 5-membered ring structure, rather than only a 6-membered ring structure, and thus does not fall within the scope of ring a in this example.
According to one embodiment of the invention, wherein ring a is selected from any of the following structures:
wherein Z is1-Z8Each of which is independently selected from the group consisting of C,CR5or N;
R5each independently selected from the group consisting of: hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0-20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitrile groups, isonitrile groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
wherein the position marked by "+" in the structure is the position where ring a is fused with the pyrrole ring in formula 1.
According to one embodiment of the present invention, wherein X1To X4Each independently selected from CR1，R1Each independently selected from: hydrogen, deuterium, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms.
According to one embodiment of the present invention, wherein X1To X4Are all CH.
According to one embodiment of the present invention, wherein Y1To Y4Each independently selected from C or CR2，R2Each independently selected from hydrogen, deuterium, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, and substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms.
According to one embodiment of the present invention, wherein Y1To Y4Each independently selected from C or CH.
According to one embodiment of the present invention, wherein Ar1And Ar2Each independently selected from the group consisting of: phenyl, biphenyl, terphenyl, silafluorenyl, phenanthryl, triphenylene, fluorenyl, dibenzofuranyl, dibenzothienyl, dibenzoselenophenyl, azabenzofuranyl, azabenzothienyl, azabenzoselenophenyl, naphthyl.
According to an embodiment of the invention, wherein L is selected from the group consisting of: phenylene, biphenylene, terphenylene, fluorenylene, phenanthrylene, triphenylene, dibenzofuranylene, dibenzothiophenylene, dibenzoselenophenylene, naphthylene.
According to one embodiment of the invention, wherein R4Is phenyl.
According to one embodiment of the present invention, wherein L and Y2And (4) connecting.
According to an embodiment of the present invention, wherein the compound is selected from the group consisting of compound 1 to compound 579, the specific structures of compound 1 to compound 579 are set forth in claim 10.
According to an embodiment of the present invention, there is also disclosed an electroluminescent device, including:
an anode, a cathode, a anode and a cathode,
a cathode electrode, which is provided with a cathode,
and an organic layer disposed between the anode and the cathode, the organic layer comprising a compound having formula 1:
wherein the content of the first and second substances,
ring A represents a substituted or unsubstituted aromatic condensed ring having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaromatic condensed ring having 8 to 30 carbon atoms;
wherein R is3Having the structure of formula 2:
wherein Ar is1And Ar2Each independently of the otherIs selected from substituted or unsubstituted aryl having 6 to 30 carbon atoms, or is substituted or unsubstituted heteroaryl having 5 to 30 carbon atoms;
wherein L is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 carbon atoms;
wherein, X1To X4Each independently selected from CR1Or N;
wherein, Y1To Y4Each independently selected from C, CR2Or N;
R1and R2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0-20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitrile groups, isonitrile groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
wherein R is4Is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
According to one embodiment of the present invention, in the device, the organic layer is a light emitting layer, and the compound is a host material.
According to an embodiment of the invention, in the device, the organic layer further comprises a phosphorescent light emitting material.
According to one embodiment of the invention, in the device, the phosphorescent light emitting material is a metal complex having at least one ligand comprising the structure of any one of:
wherein the content of the first and second substances,
Ra,Rband RcMay represent mono-, poly-, or unsubstituted;
Ra,Rband RcEach independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl groups having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy groups having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitriles, isonitriles, thio groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
Xbselected from the group consisting of: o, S, Se, NRN1,CRC1RC2；
RN1,RC1And RC2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atomsAn oxy group, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amine group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a nitrile group, an isonitrile group, a sulfanyl group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;
in the ligand structure, two adjacent substituents can optionally be linked to form a ring.
According to another embodiment of the present invention, a compound formulation comprising a compound represented by formula 1 is also disclosed. The specific structure of the compound is shown in any one of the embodiments.
In combination with other materials
The materials described herein for use in particular layers in an organic light emitting device may be used in combination with various other materials present in the device. Combinations of these materials are described in detail in U.S. patent application Ser. No. 0132-0161 of U.S. 2016/0359122A1, the entire contents of which are incorporated herein by reference. The materials described or referenced therein are non-limiting examples of materials that may be used in combination with the compounds disclosed herein, and one skilled in the art can readily review the literature to identify other materials that may be used in combination.
Materials described herein as being useful for particular layers in an organic light emitting device can be used in combination with a variety of other materials present in the device. For example, the materials disclosed herein may be used in conjunction with a variety of light emitting dopants, hosts, transport layers, barrier layers, injection layers, electrodes, and other layers that may be present. Combinations of these materials are described in detail in U.S. patent application Ser. No. US2015/0349273A1, paragraph 0080-0101, the entire contents of which are incorporated herein by reference. The materials described or referenced therein are non-limiting examples of materials that may be used in combination with the compounds disclosed herein, and one skilled in the art can readily review the literature to identify other materials that may be used in combination.
In the examples of material synthesis, all reactions were carried out under nitrogen unless otherwise stated. All reaction solvents were anhydrous and used as received from commercial sources. The synthesis product is subjected to structural validation and characterization using one or more equipment conventional in the art (including, but not limited to, Bruker's nuclear magnetic resonance apparatus, Shimadzu's liquid chromatograph-mass spectrometer, gas chromatograph-mass spectrometer, differential scanning calorimeter, Shanghai prism-based fluorescence spectrophotometer, Wuhan Corset's electrochemical workstation, Anhui Beidek's sublimator, etc.) in a manner well known to those skilled in the art. In an embodiment of the device, the device characteristics are also tested using equipment conventional in the art (including, but not limited to, an evaporator manufactured by Anttrom engineering, an optical test system manufactured by Fushida, Suzhou, an ellipsometer manufactured by Beijing Mass., etc.) in a manner well known to those skilled in the art. Since the relevant contents of the above-mentioned device usage, testing method, etc. are known to those skilled in the art, the inherent data of the sample can be obtained with certainty and without being affected, and therefore, the relevant contents are not described in detail in this patent.
Materials synthesis example:
the preparation method of the compound of the present invention is not limited, and the following compounds are typically but not limited to, and the synthetic route and the preparation method thereof are as follows:
synthesis example 1: synthesis of Compound 11
Step 1: synthesis of intermediate A
9-bromo-7H-benzo [ C ] carbazole (10.0g, 33.78mmol) was dissolved in 500 mL of DMF, followed by addition of sodium hydride (2.7g, 67.56mmol) followed by 2-chloro-4-phenylquinazoline (9.76g, 40.54mmol) and stirring at room temperature overnight. After completion of the reaction, distilled water was added to precipitate a solid, which was filtered to obtain a solid, and washed with distilled water and ethanol in this order to obtain intermediate A (15g, yield 89%) as a gray solid.
Step 2: synthesis of Compound 11
Intermediate A (6g, 12.0mmol), triphenylamine 4-borate (4.2g, 14.4mmol), palladium tetratriphenylphosphine (693.3mg, 0.6mmol), potassium carbonate (4.14g, 30.0mmol), solvent (toluene/ethanol/water: 120/30/30mL) were added to a three-necked flask under nitrogen. Then, the reaction was allowed to proceed at 90 ℃ overnight, and after completion of the reaction, distilled water was added to precipitate a solid, which was then filtered to obtain a solid, which was recrystallized from toluene to obtain Compound 11(6g, yield 75%) as a yellow solid. The product was identified as the target product, molecular weight 665.
Synthesis example 2: synthesis of Compound 262
Step 1: synthesis of intermediate B
5-bromo-7H-benzo [ C ] carbazole (10.0g, 33.78mmol) was dissolved in 500 mL of DMF, followed by addition of sodium hydride (2.7g, 67.56mmol) followed by 2-chloro-4-phenylquinazoline (9.76g, 40.54mmol) and stirring at room temperature overnight. After the reaction was completed, distilled water was added to precipitate a solid, which was filtered to obtain a solid, and the solid was washed with distilled water and ethanol in this order to obtain a gray solid intermediate B (15g, yield 89%)
Step 2: synthesis of Compound 262
Intermediate B (6g, 12.0mmol), triphenylamine 4-borate (4.2g, 14.4mmol), palladium tetratriphenylphosphine (693.3mg, 0.6mmol), potassium carbonate (4.14g, 30.0mmol), solvent (toluene/ethanol/water: 120/30/30mL) were added to a three-necked flask under nitrogen. Then, the reaction was allowed to proceed at 90 ℃ overnight, and after completion of the reaction, distilled water was added to precipitate a solid, which was then filtered to obtain a solid, which was recrystallized from toluene to obtain Compound 262(6.5g, yield 82%) as a yellow solid. The product was identified as the target product, molecular weight 665.
It will be appreciated by those skilled in the art that the above preparation method is only an illustrative example, and that those skilled in the art can modify it to obtain other structures of the compounds of the present invention.
Device embodiments
Device example 1
First, a glass substrate, having an Indium Tin Oxide (ITO) anode 80nm thick, was cleaned and then treated with oxygen plasma and UV ozone. After treatment, the substrate was dried in a glove box to remove moisture. The substrate is then mounted on a substrate holder and loaded into a vacuum chamber. The organic layer specified below was in a vacuum of about 10 degrees-8In the case of torr, the evaporation was performed by thermal vacuum evaporation at a rate of 0.2 to 2 angstroms/second in turn on an ITO anode. Compound HI was used as Hole Injection Layer (HIL). The compound HT is used as a Hole Transport Layer (HTL). Compound EB was used as an Electron Blocking Layer (EBL). The compound RD was then doped in the compound 11 of the present invention and co-evaporated to serve as the light emitting layer (EML). Compound HB was used as a Hole Blocking Layer (HBL). On the hole blocking layer, compound ET and 8-hydroxyquinoline-lithium (Liq) were co-evaporated as an Electron Transport Layer (ETL). Finally, 8-hydroxyquinoline-lithium (Liq) was evaporated to a thickness of 1nm as an electron injection layer, and 120nm of aluminum as a cathode. The device was then transferred back to the glove box and encapsulated with a glass lid and moisture absorber to complete the device.
Device example 2
Device example 2 was carried out in the same manner as in device example 1 except that the compound 262 of the present invention was used in place of the compound 11 of the present invention in the light-emitting layer (EML).
Device comparative example 1
Device comparative example 1 was the same as device example 1 except that compound a was used in place of compound 11 of the present invention in the light emitting layer (EML).
The detailed partial device layer structure and thickness are shown in the table below. Wherein more than one layer of the materials used is obtained by doping different compounds in the stated weight ratios.
TABLE 1 device Structure
The material structure used in the device is as follows:
table 2 shows the values at 1000cd/m2The maximum wavelength (λ max) and CIE data measured, while the device lifetime and Power Efficiency (PE) were at 15mA/cm2Measured at constant current.
TABLE 2 device data
Discussion:
as shown by the data in Table 2, the CIE,. lamda.max, of examples 1 and 2 are similar to comparative example 1, but the power efficiency of examples 1 and 2 is higher than that of comparative example 1 at 15mA/cm2The lifetime of examples 1 and 2 was significantly higher than that of comparative example 1 at constant current. At the same time at 1000cd/m2The driving voltage of example 1 was 2.79V under the conditions, which was 0.3V lower than 3.08V of comparative example 1. The compound disclosed by the invention is a novel carbazole triarylamine compound, wherein a triarylamine fragment is rich in electrons and has excellent hole transport performance. The carbazole quinazoline segment fused with the six-membered ring is relatively electron-deficient, has excellent electron transport performance, and simultaneously improves the stability. The combination of the two shows unexpected excellent characteristics in the balance of hole and electron transport, and the characteristics in the device show that the device has high efficiency and long service life, and very low driving voltage can be obtained, so that the performance of the device is greatly improved.
It should be understood that the various embodiments described herein are illustrative only and are not intended to limit the scope of the invention. Thus, the invention as claimed may include variations from the specific embodiments and preferred embodiments described herein, as will be apparent to those skilled in the art. Many of the materials and structures described herein may be substituted with other materials and structures without departing from the spirit of the present invention. It should be understood that various theories as to why the invention works are not intended to be limiting.
Claims (16)
1. A compound having formula 1:
wherein, the ring A represents a substituted or unsubstituted aromatic condensed ring having 10 to 30 carbon atoms, or a substituted or unsubstituted heteroaromatic condensed ring having 8 to 30 carbon atoms;
wherein R is3Having the structure of formula 2:
wherein Ar is1And Ar2Each independently selected from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl groups having 5 to 30 carbon atoms;
wherein L is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 carbon atoms;
wherein, X1To X4Each independently selected from CR1Or N;
wherein, Y1To Y4Each independently selected from C, CR2Or N;
R1and R2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms,substituted or unsubstituted heteroalkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl groups having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy groups having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitrile groups, isonitrile groups, sulfanyl groups, sulfinyl groups, sulfonyl, phosphino, and combinations thereof;
wherein R is4Is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
2. The compound of claim 1, wherein ring a comprises only 6-membered ring structures.
3. The compound of claim 1 or 2, wherein ring a is selected from any of the following structures:
wherein Z is1-Z8Each independently selected from C, CR5Or N;
R5each independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atomsSubstituted or unsubstituted aryloxy groups having from 6 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having from 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having from 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having from 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having from 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having from 6 to 20 carbon atoms, substituted or unsubstituted amine groups having from 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitrile groups, isonitrile groups, sulfanyl groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
wherein the position marked by "+" in the structure is the position where ring a is fused with the pyrrole ring in formula 1.
4. A compound according to any preceding claim, wherein X1To X4Each independently selected from CR1，R1Each independently selected from: hydrogen, deuterium, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms; preferably, R1Is hydrogen.
5. A compound according to any preceding claim, wherein Y is1To Y4Each independently selected from C or CR2，R2Each independently selected from hydrogen, deuterium, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms; preferably, R2Is hydrogen.
6. A compound according to any preceding claim, wherein Ar is1And Ar2Each independently selected from the group consisting of: phenyl, biphenyl, terphenyl, silafluorenyl, phenanthryl, triphenylene, fluorenyl, dibenzofuranyl, dibenzothienyl, dibenzoselenophenyl, azabenzofuranyl, azabenzothienyl, azabenzoselenophenyl, naphthyl.
7. The compound of any one of the preceding claims, wherein L is selected from the group consisting of: phenylene, biphenylene, terphenylene, fluorenylene, phenanthrylene, triphenylene, dibenzofuranylene, dibenzothiophenylene, dibenzoselenophenylene, naphthylene.
8. A compound according to any preceding claim, wherein R is4Is phenyl.
9. A compound according to any preceding claim, wherein L and Y are2And (4) connecting.
10. The compound of claim 1, wherein the compound is selected from the group consisting of:
11. the compound of claim 1, wherein Y1To Y4At least one of which is N.
12. An electroluminescent device, comprising:
an anode, a cathode, a anode and a cathode,
a cathode electrode, which is provided with a cathode,
an organic layer disposed between the anode and cathode, the organic layer comprising the compound of claim 1.
13. The device of claim 12, wherein the organic layer is an emissive layer and the compound is a host material.
14. The device of claim 13, wherein the organic layer further comprises a phosphorescent light emitting material.
15. The device of claim 14, wherein the phosphorescent light emitting material is a metal complex having at least one ligand comprising the structure of any one of:
wherein the content of the first and second substances,
Ra,Rband RcMay represent mono-, poly-, or unsubstituted;
Ra,Rband RcEach independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl groups having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy groups having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amine groups having 0-20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, nitriles, isonitriles, sulfanyl groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;
Xbselected from the group consisting of: o, S, Se, NRN1,CRC1RC2；
RN1,RC1And RC2Each independently selected from the group consisting of: hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstitutedSubstituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, substituted or unsubstituted aryl group having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, substituted or unsubstituted amine group having 0 to 20 carbon atoms, acyl group, carbonyl group, carboxylic acid group, ester group, nitrile group, isonitrile group, sulfanyl group, sulfinyl group, sulfonyl group, phosphino group, and combinations thereof;
in the ligand structure, adjacent substituents can optionally be linked to form a ring.
16. A compound formulation comprising the compound of claim 1.
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| CN112430225A (en) * | 2020-10-30 | 2021-03-02 | 陕西莱特光电材料股份有限公司 | Nitrogen-containing compound, electronic component, and electronic device |
| WO2021145429A1 (en) * | 2020-01-15 | 2021-07-22 | 出光興産株式会社 | Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device |
| CN113444072A (en) * | 2020-03-26 | 2021-09-28 | 北京鼎材科技有限公司 | Compound and application thereof |
| CN113999161A (en) * | 2021-11-12 | 2022-02-01 | 上海八亿时空先进材料有限公司 | Indole compound and application thereof |
| CN114133400A (en) * | 2021-05-31 | 2022-03-04 | 陕西莱特光电材料股份有限公司 | Organic compound, and electronic element and electronic device using same |
| EP4089073A1 (en) * | 2021-05-12 | 2022-11-16 | Samsung Display Co., Ltd. | Luminescence device and nitrogen-containing compound for a luminescence device |
| WO2023026864A1 (en) * | 2021-08-26 | 2023-03-02 | 出光興産株式会社 | Compound, organic electroluminescent element material, organic electroluminescent element, and electronic device |
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| WO2021145429A1 (en) * | 2020-01-15 | 2021-07-22 | 出光興産株式会社 | Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device |
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| EP4089073A1 (en) * | 2021-05-12 | 2022-11-16 | Samsung Display Co., Ltd. | Luminescence device and nitrogen-containing compound for a luminescence device |
| CN114133400A (en) * | 2021-05-31 | 2022-03-04 | 陕西莱特光电材料股份有限公司 | Organic compound, and electronic element and electronic device using same |
| WO2023026864A1 (en) * | 2021-08-26 | 2023-03-02 | 出光興産株式会社 | Compound, organic electroluminescent element material, organic electroluminescent element, and electronic device |
| CN113999161A (en) * | 2021-11-12 | 2022-02-01 | 上海八亿时空先进材料有限公司 | Indole compound and application thereof |
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