CN111196822B - Compound containing silafluorenyl and fluorenyl structure and electroluminescent device containing the same - Google Patents
Compound containing silafluorenyl and fluorenyl structure and electroluminescent device containing the same Download PDFInfo
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- CN111196822B CN111196822B CN201811382861.5A CN201811382861A CN111196822B CN 111196822 B CN111196822 B CN 111196822B CN 201811382861 A CN201811382861 A CN 201811382861A CN 111196822 B CN111196822 B CN 111196822B
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 67
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 title abstract description 7
- 230000005525 hole transport Effects 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 72
- 125000004432 carbon atom Chemical group C* 0.000 claims description 49
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 239000012044 organic layer Substances 0.000 claims description 13
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- -1 triarylamine compound Chemical class 0.000 abstract description 62
- 239000000463 material Substances 0.000 abstract description 49
- 230000000903 blocking effect Effects 0.000 abstract description 10
- 238000009472 formulation Methods 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 27
- 239000000243 solution Substances 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 125000003118 aryl group Chemical group 0.000 description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 239000007787 solid Substances 0.000 description 14
- 125000001072 heteroaryl group Chemical group 0.000 description 13
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 11
- 230000003111 delayed effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 125000000753 cycloalkyl group Chemical group 0.000 description 9
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 8
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 7
- 125000003342 alkenyl group Chemical group 0.000 description 7
- 229910052805 deuterium Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 150000003384 small molecules Chemical class 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical class C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 125000003710 aryl alkyl group Chemical group 0.000 description 6
- 238000004440 column chromatography Methods 0.000 description 6
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000003446 ligand Substances 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 6
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 125000003545 alkoxy group Chemical group 0.000 description 5
- 125000000304 alkynyl group Chemical group 0.000 description 5
- 239000008346 aqueous phase Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012043 crude product Substances 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 5
- 125000005842 heteroatom Chemical group 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 125000001424 substituent group Chemical group 0.000 description 5
- 238000006467 substitution reaction Methods 0.000 description 5
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 125000004104 aryloxy group Chemical group 0.000 description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 239000007788 liquid 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
- 238000004519 manufacturing process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 125000002252 acyl group Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910000085 borane Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- 150000002527 isonitriles Chemical class 0.000 description 3
- 150000002825 nitriles Chemical class 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- FVZVCSNXTFCBQU-UHFFFAOYSA-N phosphanyl Chemical group [PH2] FVZVCSNXTFCBQU-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 3
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UORVGPXVDQYIDP-UHFFFAOYSA-N trihydridoboron Substances B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- BNRDGHFESOHOBF-UHFFFAOYSA-N 1-benzoselenophene Chemical compound C1=CC=C2[se]C=CC2=C1 BNRDGHFESOHOBF-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
- MBHPOBSZPYEADG-UHFFFAOYSA-N 2-bromo-9,9-dimethylfluorene Chemical compound C1=C(Br)C=C2C(C)(C)C3=CC=CC=C3C2=C1 MBHPOBSZPYEADG-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
- BFRDBSBKJUVSNP-UHFFFAOYSA-N 9h-fluorene;silicon Chemical compound [Si].C1=CC=C2CC3=CC=CC=C3C2=C1 BFRDBSBKJUVSNP-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
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- SLGBZMMZGDRARJ-UHFFFAOYSA-N Triphenylene Chemical group C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C2=C1 SLGBZMMZGDRARJ-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
- 125000005103 alkyl silyl group Chemical group 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
- 125000005104 aryl silyl 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
- 239000004305 biphenyl Chemical group 0.000 description 2
- 235000010290 biphenyl Nutrition 0.000 description 2
- DMVOXQPQNTYEKQ-UHFFFAOYSA-N biphenyl-4-amine Chemical group C1=CC(N)=CC=C1C1=CC=CC=C1 DMVOXQPQNTYEKQ-UHFFFAOYSA-N 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
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 238000013461 design Methods 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
- 230000005281 excited state Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 125000004404 heteroalkyl 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
- 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
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 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
- 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
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical group C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 125000002924 primary amino group Chemical class [H]N([H])* 0.000 description 2
- 230000008569 process Effects 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
- 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
- UTUZBCDXWYMYGA-UHFFFAOYSA-N silafluorene Chemical compound C12=CC=CC=C2CC2=C1C=CC=[Si]2 UTUZBCDXWYMYGA-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000003826 tablet Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 125000005259 triarylamine group Chemical group 0.000 description 2
- 125000005580 triphenylene group Chemical group 0.000 description 2
- OFGJZUBGZYMANZ-UHFFFAOYSA-N (2-bromophenoxy)boronic acid Chemical compound OB(O)OC1=CC=CC=C1Br OFGJZUBGZYMANZ-UHFFFAOYSA-N 0.000 description 1
- KTZQTRPPVKQPFO-UHFFFAOYSA-N 1,2-benzoxazole Chemical compound C1=CC=C2C=NOC2=C1 KTZQTRPPVKQPFO-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
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical compound N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 1
- HMLURENDJQQGCM-UHFFFAOYSA-N 1-benzothiophene;pyridine Chemical compound C1=CC=NC=C1.C1=CC=C2SC=CC2=C1 HMLURENDJQQGCM-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
- 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
- CXHXFDQEFKFYQJ-UHFFFAOYSA-N 2-bromo-4-chloro-1-iodobenzene Chemical compound ClC1=CC=C(I)C(Br)=C1 CXHXFDQEFKFYQJ-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
- 125000006481 2-iodobenzyl group Chemical group [H]C1=C([H])C(I)=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000005916 2-methylpentyl group Chemical group 0.000 description 1
- 125000004135 2-norbornyl group Chemical group [H]C1([H])C([H])([H])C2([H])C([H])([H])C1([H])C([H])([H])C2([H])* 0.000 description 1
- TWBPWBPGNQWFSJ-UHFFFAOYSA-N 2-phenylaniline Chemical group NC1=CC=CC=C1C1=CC=CC=C1 TWBPWBPGNQWFSJ-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- QMEQBOSUJUOXMX-UHFFFAOYSA-N 2h-oxadiazine Chemical compound N1OC=CC=N1 QMEQBOSUJUOXMX-UHFFFAOYSA-N 0.000 description 1
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical compound N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 description 1
- 125000006279 3-bromobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(Br)=C1[H])C([H])([H])* 0.000 description 1
- 125000004975 3-butenyl group Chemical group C(CC=C)* 0.000 description 1
- 125000003852 3-chlorobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(Cl)=C1[H])C([H])([H])* 0.000 description 1
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- 125000003670 adamantan-2-yl group Chemical group [H]C1([H])C(C2([H])[H])([H])C([H])([H])C3([H])C([*])([H])C1([H])C([H])([H])C2([H])C3([H])[H] 0.000 description 1
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- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
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- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
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- 239000012071 phase Substances 0.000 description 1
- XDJOIMJURHQYDW-UHFFFAOYSA-N phenalene Chemical group C1=CC(CC=C2)=C3C2=CC=CC3=C1 XDJOIMJURHQYDW-UHFFFAOYSA-N 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical compound C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- CPNGPNLZQNNVQM-UHFFFAOYSA-N pteridine Chemical compound N1=CN=CC2=NC=CN=C21 CPNGPNLZQNNVQM-UHFFFAOYSA-N 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- JWVCLYRUEFBMGU-UHFFFAOYSA-N quinazoline Chemical compound N1=CN=CC2=CC=CC=C21 JWVCLYRUEFBMGU-UHFFFAOYSA-N 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- 125000005504 styryl group Chemical group 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- KTQYWNARBMKMCX-UHFFFAOYSA-N tetraphenylene Chemical group C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C3=CC=CC=C3C2=C1 KTQYWNARBMKMCX-UHFFFAOYSA-N 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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Classifications
-
- 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 System
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/636—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/655—Aromatic compounds comprising a hetero atom comprising only sulfur as heteroatom
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
Abstract
Disclosed is a novel compound containing a silafluorenyl group and a fluorenyl structure. The compound is a triarylamine compound containing both silicon fluorenyl and fluorenyl, and can be used as a hole transport material and an electron blocking material in an electroluminescent device. These novel compounds can provide better device integration. An electroluminescent device and a compound formulation comprising the compound are also disclosed.
Description
Technical Field
The present invention relates to compounds for use in organic electronic devices, such as organic light emitting devices. And more particularly to a novel silicon fluorene and fluorene containing compound, electroluminescent devices and compound formulations containing the same.
Background
Organic electronic devices include, but are not limited to, the following: organic Light Emitting Diodes (OLEDs), organic field effect transistors (O-FETs), organic light emitting transistors (OLEDs), organic photovoltaic devices (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 electroluminescent devices.
In 1987, tang and Van Slyke of Isomandah reported a double-layered 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). Once biased into the device, green light is emitted from the device. The invention lays a foundation for the development of modern Organic Light Emitting Diodes (OLEDs). Most advanced OLEDs may include 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. Because OLEDs are self-emitting solid state devices, they offer 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 flexible substrate fabrication.
OLEDs can be divided into three different types according to their light emission mechanism. The OLED of the Tang and van Slyke invention is a fluorescent OLED. It uses only singlet light emission. The triplet states generated in the device are wasted through non-radiative decay channels. Thus, the Internal Quantum Efficiency (IQE) of fluorescent OLEDs is only 25%. This limitation prevents commercialization of OLEDs. In 1997, forrest and Thompson reported phosphorescent OLEDs using triplet emission from heavy metals containing complexes as emitters. Thus, both singlet and triplet states can be harvested, achieving a 100% IQE. Because of its high efficiency, the discovery and development of phosphorescent OLEDs has contributed directly to the commercialization of Active Matrix OLEDs (AMOLEDs). Recently, adachi achieved high efficiency by 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 can generate singlet excitons by reverse intersystem crossing, resulting in high IQE.
OLEDs can also be classified into small molecule and polymeric OLEDs depending on the form of the materials used. Small molecule refers to any organic or organometallic material that is not a polymer. The molecular weight of the small molecules can be large as long as they have a precise structure. Dendrimers with a defined structure are considered small molecules. Polymeric OLEDs include conjugated polymers and non-conjugated polymers having pendant luminescent groups. Small molecule OLEDs can become polymeric OLEDs if post-polymerization occurs during fabrication.
Various methods of OLED fabrication exist. Small molecule OLEDs are typically fabricated by vacuum thermal evaporation. Polymeric OLEDs are manufactured by solution processes such as spin coating, inkjet printing and nozzle printing. Small molecule OLEDs can also be fabricated by solution processes if the material can be dissolved or dispersed in a solvent.
The emission color of an OLED can be achieved by the structural design of the luminescent material. The OLED may include a light emitting layer or layers to achieve a desired spectrum. Green, yellow and red OLEDs, phosphorescent materials have been successfully commercialized. Blue phosphorescent devices still have problems of blue unsaturation, short device lifetime, high operating voltage, and the like. Commercial full color OLED displays typically employ a mixing strategy using blue fluorescent and phosphorescent yellow, or red and green. Currently, a rapid decrease in efficiency of phosphorescent OLEDs at high brightness remains a problem. In addition, it is desirable to have a more saturated emission spectrum, higher efficiency and longer device lifetime.
The efficiency, the service life and other performances of the OLED device have important relation with the balance of the carrier concentration of the light-emitting layer, and the balance of the carrier concentration of the light-emitting layer can be regulated and controlled more reasonably through the molecular structure design of the charge transmission material and the carrier blocking material. Triarylamines are useful as hole transport materials and electron blocking materials in electroluminescent devices, and silafluorene has unique properties due to the presence of silicon atoms, and fluorenyl also has its unique structure, while the use of derivatives containing both in OLED materials has not been fully developed. The invention discloses a novel triarylamine compound containing silicon fluorenyl and fluorenyl, which can provide better comprehensive performance of devices.
Disclosure of Invention
The present invention aims to solve at least part of the above problems by providing a series of novel structures of silicon-containing fluorene and fluorenyl-containing triarylamine compounds. The compounds are useful as hole transport materials and electron blocking materials in electroluminescent devices. Due to the unique structure of the compound, better device comprehensive performance can be provided.
According to one embodiment of the present invention, a compound having the structure of formula 1 is disclosed:
wherein the method comprises the steps of
X 1 To X 6 Each independently selected from CH, CD or N;
R 1 and R is 2 Each 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 unsubstitutedAlkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 20 carbon atoms, substituted or unsubstituted amine having 0 to 20 carbon atoms, acyl, carbonyl, carboxylic acid, ester, nitrile, isonitrile, thio, sulfinyl, sulfonyl, phosphino, and combinations thereof;
X a and X b One of them must be CR, X a And X b Is selected from CH, CD, or N;
wherein R is a structure represented by formula 2:
wherein the method comprises the steps of
R 3 And R is 4 Each independently selected from the group consisting of: hydrogen, deuterium, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 ring carbon atoms, and combinations thereof;
wherein Ar is a substituted or unsubstituted aryl group having from 6 to 60 carbon atoms, a substituted or unsubstituted heteroaryl group having from 3 to 60 carbon atoms, and combinations thereof;
R 1 and R is 2 ，R 3 And R is 4 Can optionally be linked to form a ring.
According to another embodiment of the present invention, there is also disclosed an electroluminescent device including an anode, a cathode, and an organic layer disposed between the anode and the cathode, the organic layer including the compound having formula 1.
According to another embodiment of the present invention, a compound formulation comprising the compound of formula 1 is also disclosed.
The triarylamine compound containing silicon fluorene and fluorene disclosed by the invention can be used as a hole transport material and an electron blocking material in an electroluminescent device. Because of the unique structure of these novel compounds, the balance of hole and electron transport of the device can be effectively assisted, thereby providing better device overall performance.
Drawings
Fig. 1 is a schematic diagram of an organic light emitting device that may contain a compound or a compound formulation as disclosed herein.
Fig. 2 is a schematic view of another organic light emitting device that may contain a compound or a compound formulation as disclosed herein.
Fig. 3 is structural formula 1 showing a compound as disclosed herein.
Detailed Description
OLEDs can be fabricated on a variety of substrates, such as glass, plastic, and metal. Fig. 1 schematically illustrates, without limitation, an organic light-emitting device 100. The drawings are not necessarily to scale, and some of the layer structures in the drawings 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, a light emitting 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 layers described. The nature and function of the layers and exemplary materials are described in more detail in U.S. patent US7,279,704B2, columns 6-10, the entire contents of which are incorporated herein by reference.
There are more instances of each of these layers. For example, a flexible and transparent substrate-anode combination is disclosed in U.S. patent 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 in a 50:1 molar ratio 4 m-MTDATA of TCNQ 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. Pat. 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 in 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 the practice of cathodesFor example, it includes a composite cathode having a thin layer of metal, such as Mg: ag, with an overlying transparent, conductive, sputter deposited ITO layer. 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 implant layers are provided in U.S. patent application publication No. 2004/0174116, which is incorporated by reference in its entirety. A description of protective layers can 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 by way of non-limiting example. The function of the OLED may be achieved by combining the various layers described above, or some layers, such as an electron blocking layer, 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 sublayers. For example, the light emitting layer may have two layers of different light emitting materials to achieve a desired light emission spectrum; for another example, the hole transport layer may have a first hole transport layer and a second hole transport layer.
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, such as the organic light emitting device 200 shown schematically and without limitation in fig. 2, which differs from fig. 1 in that an encapsulation layer 102 may also be included over the cathode 190 to prevent 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 an organic-inorganic hybrid layer. The encapsulation layer should be placed directly or indirectly outside the OLED device. Multilayer film packages are 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 a variety of 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, heads-up displays, displays that are fully or partially transparent, flexible displays, smart phones, tablet computers, tablet phones, wearable devices, smart watches, laptops, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, vehicle displays, and taillights.
The materials and structures described herein may also be used in other organic electronic devices as listed above.
As used herein, "top" means furthest from the substrate and "bottom" means closest to the substrate. In the case where the first layer is described as being "disposed" on "the second layer, the first layer is disposed farther from the substrate. Unless a first layer is "in contact with" a second layer, other layers may be present between the first and second layers. For example, a cathode may be described as "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 "photosensitive" when it is believed that the ligand directly contributes to the photosensitive properties of the emissive material. When it is believed that the ligand does not contribute to the photosensitive properties of the emissive material, the ligand may be referred to as "ancillary," but ancillary ligands may alter the properties of the photosensitive ligand.
It is believed that the Internal Quantum Efficiency (IQE) of fluorescent OLEDs can be limited by spin statistics that delay fluorescence by more than 25%. Delayed fluorescence can be generally classified into two types, i.e., P-type delayed fluorescence and E-type delayed fluorescence. The P-type delayed fluorescence is generated by triplet-triplet annihilation (TTA).
On the other hand, the E-type delayed fluorescence does not depend on the collision of two triplet states, but on the transition between the triplet states and the singlet excited state. Compounds capable of generating E-type delayed fluorescence need to have very small mono-triplet gaps in order for the conversion between the energy states. The thermal energy may activate a transition from the triplet state back to the singlet state. This type of delayed fluorescence is also known as Thermally Activated Delayed Fluorescence (TADF). A significant feature of TADF is that the delay component increases with increasing temperature. The fraction of backfill singlet excited states may reach 75% if the reverse intersystem crossing (iric) rate is sufficiently fast to minimize non-radiative decay from the triplet states. The total singlet fraction may be 100%, well in excess of 25% of the spin statistics of the electrically generated excitons.
Type E delayed fluorescence features can be found in excitation complex systems or in single compounds. Without being bound by theory, it is believed that E-delayed fluorescence requires a luminescent material with a small mono-triplet energy gap (Δe S-T ). Organic non-metal containing donor-acceptor luminescent materials may be able to achieve this. The emission of these materials is typically characterized as donor-acceptor Charge Transfer (CT) type emission. The spatial separation of HOMO from LUMO in these donor-acceptor compounds generally results in a small Δe S-T . These states may include CT states. Typically, donor-acceptor luminescent materials are constructed by linking an electron donor moiety (e.g., an amino or carbazole derivative) to an electron acceptor moiety (e.g., an N-containing six-membered aromatic ring).
Definition of terms for substituents
Halogen or halide-as used herein, includes fluorine, chlorine, bromine and iodine.
Alkyl-includes straight and branched 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 carbon 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 preferred.
Cycloalkyl-as used herein, includes cyclic alkyl. Preferred cycloalkyl groups are cycloalkyl groups containing 4 to 10 ring carbon atoms, including cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4-dimethylcyclohexyl, 1-adamantyl, 2-adamantyl, 1-norbornyl, 2-norbornyl and the like. In addition, cycloalkyl groups may be optionally substituted. The carbon in the ring may be substituted with other heteroatoms.
Alkenyl-as used herein, covers both straight chain and branched alkene groups. Preferred alkenyl groups are alkenyl groups containing 2 to 15 carbon atoms. Examples of alkenyl groups include vinyl, allyl, 1-butenyl, 2-butenyl, 3-butenyl, 1, 3-butadienyl, 1-methylvinyl, styryl, 2-diphenylvinyl, 1-methallyl, 1-dimethylallyl, 2-methallyl, 1-phenylallyl, 2-phenylallyl, 3-diphenylallyl, 1, 2-dimethylallyl, 1-phenyl-1-butenyl and 3-phenyl-1-butenyl. In addition, alkenyl groups may be optionally substituted.
Alkynyl-as used herein, covers both straight and branched chain alkynyl groups. 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, encompass both non-fused and fused systems. Preferred aryl groups are those containing from 6 to 60 carbon atoms, more preferably from 6 to 30 carbon atoms, or from 6 to 20 carbon atoms, or 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, aryl groups may be optionally substituted. Examples of non-condensed aryl groups include phenyl, biphenyl-2-yl, biphenyl-3-yl, biphenyl-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- (2-phenylpropyl) phenyl, 4 '-methylbiphenyl-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-tetrabiphenyl.
Heterocyclyl or heterocycle-as used herein, encompasses both aromatic and non-aromatic cyclic groups. 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 the group consisting of a nitrogen atom, an oxygen atom, a sulfur atom and a selenium atom.
Heteroaryl-as used herein, encompasses non-fused and fused heteroaromatic groups that may contain 1 to 5 heteroatoms. Preferred heteroaryl groups are those containing 3 to 60 carbon atoms, more preferably 3 to 30 carbon atoms, or 3 to 20 carbon atoms, or 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, oxazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indenazine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, benzothiophene pyridine, thienodipyridine, benzothiophene bipyridine, benzoselenophene, dibenzofuran, dibenzoselenophene, carbazole, indolocarbazole, imidazole, pyridine, triazine, benzimidazole, 1, 2-aza-1, 3-aza-borane, 1-borane, 4-borane, and the like. In addition, heteroaryl groups may be optionally substituted.
Alkoxy-is represented by-O-alkyl. Examples of alkyl groups and preferred examples are the same as described above. Examples of the alkoxy group having 1 to 20 carbon atoms, preferably 1 to 6 carbon atoms include methoxy, ethoxy, propoxy, butoxy, pentoxy and hexoxy groups. 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 phenoxy and diphenoxy.
Aralkyl-as used herein, an alkyl group having an aryl substituent. In addition, aralkyl groups may be optionally substituted. Examples of aralkyl groups include benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, 2-phenylisopropyl, phenyl tert-butyl, α -naphthylmethyl, 1- α -naphthyl-ethyl, 2- α -naphthylethyl, 1- α -naphthylisopropyl, 2- α -naphthylisopropyl, β -naphthylmethyl, 1- β -naphthyl-ethyl, 2- β -naphthyl-ethyl, 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-aminobenzyl, m-aminobenzyl, o-aminobenzyl, p-nitrobenzyl, m-nitrobenzyl, o-nitrobenzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-chlorophenyl, 1-isopropyl and 1-isopropyl. Among the above, preferred are benzyl, p-cyanobenzyl, m-cyanobenzyl, o-cyanobenzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl and 2-phenylisopropyl.
The term "aza" in aza-dibenzofurans, aza-dibenzothiophenes and the like means that one or more C-H groups in the corresponding aromatic fragment are replaced by nitrogen atoms. 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 will be readily apparent to those of ordinary skill in the art, and all such analogs are intended to be included in the terms described herein.
The alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, heterocyclyl, aryl, and heteroaryl groups may be unsubstituted or substituted with one or more groups selected from deuterium, halogen, alkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, amino, cyclic amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof.
It will be appreciated that when a fragment of a molecule is described as a substituent or otherwise attached to another moiety, its name may be written according to whether it is a fragment (e.g., phenyl, phenylene, naphthyl, dibenzofuranyl) or according to 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 equivalent.
In the compounds mentioned in this disclosure, the hydrogen atoms 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 of their enhanced efficiency and stability of the device.
In the compounds mentioned in this disclosure, poly (heavy) substitution refers to a range of substitution inclusive of di (heavy) substitution up to the maximum available substitution.
In the compounds mentioned in this disclosure, the expression that two 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:
furthermore, the expression that two adjacent substituents can optionally be linked 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, thus forming a ring. This is exemplified by:
according to one embodiment of the present invention, a compound having formula 1 is disclosed:
wherein the method comprises the steps of
X 1 To X 6 Each independently selected from CH, CD or N;
R 1 and R is 2 Each 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 heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl having 6 to 20 carbon atoms, substituted or unsubstituted amine having 0 to 20 carbon atoms, acyl, carbonyl, carboxylic acid groups, ester groups, nitrile, isonitrile, thio, sulfinyl, sulfonyl, phosphino, and combinations thereof;
r in formula 1 1 And R is 2 Can optionally be linked to form a ring;
when X is a When CR is X b Is CH, CD or N; or when X b When CR is X a Is CH, CD or N; wherein R is a structure represented by formula 2:
wherein the method comprises the steps of
R 3 And R is 4 Each independently selected from the group consisting of: hydrogen, deuterium, substituted or unsubstituted alkyl groups having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl groups having 3 to 20 ring carbon atoms, and combinations thereof;
wherein Ar is selected from the group consisting of substituted or unsubstituted aryl groups having from 6 to 60 carbon atoms, substituted or unsubstituted heteroaryl groups having from 3 to 60 carbon atoms, and combinations thereof;
r in formula 2 3 And R is 4 Can optionally be linked to form a ring.
According to one embodiment of the invention, wherein X 1 To X 6 Each independently selected from CH or CD.
According to one embodiment of the invention, wherein X 1 To X 4 One of which is N.
According to one embodiment of the invention, wherein X 2 Is N.
According to one embodiment of the invention, wherein X 3 Is N.
According to one embodiment of the invention, wherein X a Is CH or CD.
According to one embodiment of the invention, wherein X b Is CH or CD.
According to one embodiment of the invention, wherein R 1 And R is 2 Each independently selected from substituted or unsubstituted aryl groups having from 6 to 30 carbon atoms.
According to one embodiment of the invention, wherein R 1 And R is 2 Is phenyl.
According to one embodiment of the invention, wherein R 3 And R is 4 Each independently selected from the group consisting of: hydrogen, deuterium, methyl, ethyl, cyclohexyl, cyclopentyl, and combinations thereof.
According to one embodiment of the invention, wherein Ar is selected from the group consisting of:
according to an embodiment of the invention, wherein the compound is selected from the group consisting of compound 1 to compound 762, the specific structure of compound 1 to compound 762 is seen in claim 8.
According to one embodiment of the invention, wherein said compounds 1 to 762 are capable of being partially or fully deuterated.
According to another embodiment of the present invention, there is also disclosed an electroluminescent device including:
an anode is provided with a cathode,
a cathode electrode, which is arranged on the surface of the cathode,
and an organic layer disposed between the anode and the cathode, the organic layer comprising the compound having the structure of formula 1, the compound having the structure of formula 1 being specifically described in any one of the embodiments above.
According to one embodiment of the invention, wherein the organic layer is a hole transport layer.
According to one embodiment of the invention, the hole transport layer is a second hole transport layer.
According to another embodiment of the present invention, a compound formulation is also disclosed, comprising a compound having formula 1. The compounds are specifically shown in any of the above examples.
Combined with other materials
The materials described herein for specific 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 2016/0359122A1, paragraphs 0132-0161, the entire contents of which are incorporated herein by reference. The materials described or mentioned 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 useful for specific layers in an organic light emitting device may be used in combination with a variety of other materials present in the device. For example, the materials of the specific layers disclosed herein may be used in combination with a variety of light emitting, host, transport, barrier, injection, electrode, and other layers that may be present. Combinations of these materials are described in detail in the patent application US2015/0349273A1, paragraph 0080-0101, the entire contents of which are incorporated herein by reference. The materials described or mentioned 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 protection, unless otherwise indicated. All reaction solvents were anhydrous and used as received from commercial sources. The synthetic products were subjected to structural confirmation and characterization testing using one or more equipment conventional in the art (including, but not limited to, bruker's nuclear magnetic resonance apparatus, shimadzu's liquid chromatograph, liquid chromatograph-mass spectrometer, gas chromatograph-mass spectrometer, differential scanning calorimeter, shanghai's optical technique fluorescence spectrophotometer, wuhan Koste's electrochemical workstation, anhui Bei Yi g 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, a vapor deposition machine manufactured by Angstrom Engineering, an optical test system manufactured by Frieda, st. John's, an ellipsometer manufactured by Beijing, etc.), in a manner well known to those skilled in the art. Since those skilled in the art are aware of the relevant contents of the device usage and the testing method, and can obtain the intrinsic data of the sample certainly and uninfluenced, the relevant contents are not further described in this patent.
Material synthesis examples:
the preparation method of the compound of the present invention is not limited, and is typically, but not limited to, exemplified by the following compounds, the synthetic routes and preparation methods thereof are as follows:
1. synthesis of Compound 203
Step 1: synthetic intermediate 1
2-aminobiphenyl (20 g, 118).2 mmol), 2-bromo-9, 9-dimethylfluorene (24.8 g,90.9 mmol), sodium tert-butoxide (17.45 g,181.8 mmol) and Pd 2 (dba) 3 (4.16 g,4.5 mmol) was added to a 1L three-necked flask and degassed with nitrogen for 15 minutes. Toluene (400 mL) and P (t-Bu) were added sequentially 3 (18.2 g,9mmol,10% toluene solution). The reaction mixture was heated to 95℃and reacted for 1 hour. After the reaction, the reaction solution was cooled to room temperature, water was added thereto, the solution was separated, the aqueous phase was extracted with methylene chloride, and the organic phases were combined and washed with water, and the solvent was removed in vacuo to give an oily crude product. The oily crude product is purified by column chromatography to obtain a yellow solid crude product. The crude solid was recrystallized from ethanol to give intermediate 1 as a white solid (25.2 g, 76% yield).
Step 2: synthesis of intermediate 2
2-bromo-4-chloroiodobenzene (30.8 g,97.05 mmol), 2-bromophenylboric acid (21.44 g,106.76 mmol), tetrakis triphenylphosphine palladium (4.48 g,3.88 mmol) and sodium carbonate (20.6 g,194.1 mmol) were added to a 1L three-necked flask, toluene (200 mL), ethanol (100 mL) and water (100 mL) were added, and after degassing with nitrogen for 15 minutes, the reaction mixture was heated to reflux overnight. After the reaction solution was cooled to room temperature, water was added thereto, the solution was separated, the aqueous phase was extracted with ethyl acetate, and the organic phases were combined and washed with brine. The residue obtained after removal of the solvent in vacuo was purified by column chromatography to give intermediate 2 (30 g, yield 89.2%) as a colorless liquid.
Step 3: synthetic intermediate 3
Intermediate 2 (25.1 g,72.45 mmol) was dissolved in dry diethyl ether (200 mL) and degassed with nitrogen for 15 min. After the resulting solution was cooled to below-70℃with a dry ice-acetone bath, n-butyllithium (70 mL,173.88mmol,2.5M n-hexane solution) was slowly added dropwise. The reaction was kept at low temperature for 2 hours after the completion of the dropwise addition of n-butyllithium. A solution of diphenyldichlorosilane (27.5 g,108.7 mmol) in THF (50 mL) was added dropwise to the reaction solution at-70 ℃. The cold bath was then removed and the reaction was allowed to warm to room temperature naturally and allowed to react overnight at room temperature. Carefully quench with water, extract the aqueous phase with dichloromethane, combine the organic phases and wash with water, remove the solvent in vacuo and purify the residue by column chromatography to afford intermediate 3 as a white solid (17 g, 63% yield).
Step 4: synthesis of Compound 203
Intermediate 1 (17 g,47 mmol), intermediate 3 (20.8 g,56.4 mmol), sodium tert-butoxide (9 g,94 mmol) and Pd 2 (dba) 3 (2.15 g,2.35 mmol) was added to a 500mL three-necked flask and degassed with nitrogen for 15 minutes. Toluene (250 mL) and P (t-Bu) were added sequentially 3 (9.5 g,4.7mmol,10% toluene solution). The reaction solution was heated to reflux for 8 hours. After the reaction was completed, the reaction mixture was cooled to room temperature, water was added thereto, the mixture was separated, the aqueous phase was extracted with methylene chloride, the organic phases were combined, washed with water, the solvent was removed in vacuo, and the residue was purified by column chromatography to give a crude white solid. The crude solid was recrystallized from acetone to give compound 203 as a white solid (15 g, yield 46%). The obtained product was confirmed to be the target product, molecular weight 694.
Synthesis example 2: synthesis of Compound 201
Step 1: synthesis of intermediate 4
4-Aminobiphenyl (50 g,295.9 mmol), 2-bromo-9, 9-dimethylfluorene (80.8 g,295.9 mmol), sodium tert-butoxide (56.8 g,591.8 mmol) and Pd 2 (dba) 3 (13.5 g,14.8 mmol) was added to a 2L three-necked flask and degassed with nitrogen for 15 minutes. Toluene (800 mL) and P (t-Bu) were added sequentially 3 (59.8 g,29.6mmol,10% toluene solution). The reaction mixture was heated to 95℃and reacted for 1 hour. After the reaction is finished, the reaction solution is cooled to room temperature, water is added, and the solution is separated, and waterThe phases were extracted with dichloromethane and the organic phases were combined and washed with water, and the solvent was removed in vacuo to give the crude oil. The oily crude product is purified by column chromatography to obtain a yellow solid crude product. The crude solid was recrystallized from ethanol to give intermediate 4 as a white solid (92.9 g, 87% yield).
Step 2: synthesis of Compound 201
Intermediate 4 (30 g,83.1 mmol), intermediate 3 (30.7 g,83.1 mmol), sodium tert-butoxide (16 g,166.2 mmol) and palladium acetate (2.15 g,4.16 mmol) were charged to a 500mL three-necked flask and degassed with nitrogen for 15 minutes. Toluene (250 mL) and P (t-Bu) were added sequentially 3 (16.8 g,8.32mmol,10% toluene solution). The reaction solution was heated to reflux for 8 hours. After the reaction was completed, the reaction mixture was cooled to room temperature, water was added thereto, the mixture was separated, the aqueous phase was extracted with methylene chloride, the organic phases were combined, washed with water, the solvent was removed in vacuo, and the residue was purified by column chromatography to give a crude white solid. The crude solid was recrystallized from acetone to give compound 201 (46.1 g, yield 80%) as a white solid. The obtained product was confirmed to be the target product, molecular weight 694.
Those skilled in the art will recognize that the preparation of the above-described compounds is merely an illustrative example, and that those skilled in the art can make modifications thereto to obtain other compound structures of the invention.
Device example 1
First, a glass substrate having an 80nm thick Indium Tin Oxide (ITO) anode was cleaned, and then treated with oxygen plasma and UV ozone. After the treatment, the substrate was baked in a glove box to remove moisture. The substrate is then mounted on a substrate support and loaded into a vacuum chamber. The organic layer specified below was at a vacuum level of about 10 -8 In the case of the support, vapor deposition was sequentially performed on the ITO anode by thermal vacuum vapor deposition at a rate of 0.2 to 2 Angstrom/sec. The compound HI is used as a Hole Injection Layer (HIL). The compound HT is used as the first hole transport layer (HTL 1). Compound 203 synthesized according to Synthesis example 1 was used as a firstTwo hole transport layers (HTL 2). Compound GD doping was then co-deposited in compounds H1 and H2 for use as an emissive layer (EML). H2 was used as a Hole Blocking Layer (HBL). On the HBL, compound ET and 8-hydroxyquinoline-lithium (Liq) were co-deposited as an Electron Transport Layer (ETL). Finally, 8-hydroxyquinoline-lithium (Liq) with a thickness of 1nm was evaporated as an electron injection layer, and 120nm of aluminum was evaporated as a cathode. The device was then transferred back to the glove box and encapsulated with a glass cover and a moisture absorbent to complete the device.
Device example 2
The same procedure as in device example 1 was followed except that compound 201 synthesized in synthesis example 2 was used as the second hole transport layer (HTL 2).
Device comparative example 1
The fabrication procedure was the same as in device example 1 except that compound H1 was used as the second hole transport layer (HTL 2).
The detailed device layer portion structure and thickness are shown in the following table. Wherein more than one layer of the material used is doped with different compounds in the weight proportions described.
Table 1 device structure of device embodiments
The material structure used in the device is as follows:
IVL and lifetime characteristics of the device were measured. Table 2 shows the data at 1000cd/m 2 Measurement data of Luminous Efficacy (LE), power Efficiency (PE), λmax, full width at half maximum (FWHM), voltage (V) and CIE.
Table 2 device data
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Table 3 shows that at 21750cd/m 2 Measurement data of voltage (V), power Efficiency (PE) and LT 97.
Table 3 device data
Discussion:
as can be seen from tables 2 and 3, example 1 has a narrower half-peak width, a lower voltage, and higher luminous efficiency and power efficiency than comparative example 1, and the lifetime LT97 of the device is improved by nearly 39% relative to comparative example 1; example 2 has a narrower half-width, lower voltage, and higher power efficiency than comparative example 1 in the case where the device lifetime and light emission efficiency are substantially leveled with those of comparative example 1. The data presented in tables 2 and 3 show that the disclosed compounds of formula 1 featuring silafluorene and fluorene can effectively help balance hole and electron transport of the device, concentrate hole and electron combinations at the appropriate locations in the light emitting layer, and provide better overall performance in the device, such as better color purity, higher efficiency, lower operating voltage and long device lifetime.
It should be understood that the various embodiments described herein are by way of example only and are not intended to limit the scope of the invention. Thus, as will be apparent to those skilled in the art, the claimed invention may include variations of the specific and preferred embodiments described herein. Many of the materials and structures described herein may be substituted with other materials and structures without departing from the spirit of the invention. It is to be understood that the various theories as to why the present invention works are not intended to be limiting.
Claims (7)
1. A compound having formula 1:
wherein X is 1 To X 6 Each independently selected from CH;
R 1 and R is 2 Each independently selected from: a phenyl group;
X b is CR, X a Selected from CH; wherein R is a structure represented by formula 2:
wherein R is 3 And R is 4 Each independently selected from unsubstituted alkyl groups having 1 to 6 carbon atoms;
wherein Ar is
2. The compound of claim 1, wherein R 3 And R is 4 Each independently selected from the group consisting of: methyl, ethyl.
3. The compound of claim 1, wherein the compound is selected from the group consisting of:
4. an electroluminescent device comprising:
an anode is provided with a cathode,
a cathode electrode, which is arranged on the surface of the cathode,
and an organic layer disposed between the anode and the cathode, the organic layer comprising the compound of any one of claims 1-3.
5. The device of claim 4, wherein the organic layer is a hole transport layer.
6. The device of claim 4, wherein the organic layer is a second hole transport layer.
7. A composition comprising a compound of any one of claims 1-3.
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| KR20210149517A (en) * | 2020-06-02 | 2021-12-09 | 삼성에스디아이 주식회사 | Composition for organic optoelectronic device, organic optoelectronic device and display device |
| CN111848642B (en) * | 2020-07-31 | 2023-01-24 | 武汉天马微电子有限公司 | Compound, display panel and display device |
| CN113336785B (en) * | 2021-06-25 | 2022-11-11 | 长春海谱润斯科技股份有限公司 | Aromatic amine compound containing silafluorene and organic electroluminescent device thereof |
| KR102374470B1 (en) * | 2021-07-21 | 2022-03-15 | 덕산네오룩스 주식회사 | Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof |
| WO2023003313A1 (en) * | 2021-07-22 | 2023-01-26 | (주)피엔에이치테크 | Organic compound and organic light-emitting device comprising same |
| CN114014764A (en) * | 2021-11-16 | 2022-02-08 | 阜阳欣奕华材料科技有限公司 | Organic compound having triphenylene group, electroluminescent device, and display device |
| CN114773374A (en) * | 2022-04-13 | 2022-07-22 | 北京八亿时空液晶科技股份有限公司 | Aryl silafluorene compounds and organic electroluminescent devices containing the same |
| CN114907394A (en) * | 2022-06-21 | 2022-08-16 | 上海八亿时空先进材料有限公司 | Silafluorene derivative and organic electroluminescent element containing same |
| KR102555961B1 (en) * | 2022-11-04 | 2023-07-14 | 덕산네오룩스 주식회사 | Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof |
| KR102608379B1 (en) * | 2022-11-15 | 2023-11-30 | 덕산네오룩스 주식회사 | Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof |
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| US20160155961A1 (en) * | 2014-11-27 | 2016-06-02 | Samsung Display Co., Ltd. | Monoamine derivative and organic electroluminescent device including the same |
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