CN107721981A - 含9,9‑二甲基‑9,10‑二氢吖啶的化合物及其制备和应用 - Google Patents
含9,9‑二甲基‑9,10‑二氢吖啶的化合物及其制备和应用 Download PDFInfo
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 39
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- HJCUTNIGJHJGCF-UHFFFAOYSA-N 9,10-dihydroacridine Chemical compound C1=CC=C2CC3=CC=CC=C3NC2=C1 HJCUTNIGJHJGCF-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000005401 electroluminescence Methods 0.000 claims description 17
- CINYXYWQPZSTOT-UHFFFAOYSA-N 3-[3-[3,5-bis(3-pyridin-3-ylphenyl)phenyl]phenyl]pyridine Chemical compound C1=CN=CC(C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)=C1 CINYXYWQPZSTOT-UHFFFAOYSA-N 0.000 claims description 8
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 abstract description 32
- -1 dimethyl 9H acridines Chemical class 0.000 abstract description 5
- 150000002576 ketones Chemical class 0.000 abstract description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 6
- LFABNOYDEODDFX-UHFFFAOYSA-N bis(4-bromophenyl)methanone Chemical compound C1=CC(Br)=CC=C1C(=O)C1=CC=C(Br)C=C1 LFABNOYDEODDFX-UHFFFAOYSA-N 0.000 abstract 2
- 125000001246 bromo group Chemical class Br* 0.000 abstract 2
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 abstract 2
- NDOPHXWIAZIXPR-UHFFFAOYSA-N 2-bromobenzaldehyde Chemical class BrC1=CC=CC=C1C=O NDOPHXWIAZIXPR-UHFFFAOYSA-N 0.000 abstract 1
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 8
- 239000012043 crude product Substances 0.000 description 8
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- 238000004220 aggregation Methods 0.000 description 7
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- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
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- 238000000926 separation method Methods 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 4
- 239000012965 benzophenone Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- 0 CC1(C)c2ccccc2*(c2ccc([C@](*)c3cc(-[n]4c5ccccc5c5c4cccc5)cc(-[n]4c5ccccc5c5c4cccc5)c3)cc2)c2c1cccc2 Chemical compound CC1(C)c2ccccc2*(c2ccc([C@](*)c3cc(-[n]4c5ccccc5c5c4cccc5)cc(-[n]4c5ccccc5c5c4cccc5)c3)cc2)c2c1cccc2 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000003386 piperidinyl group Chemical group 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 230000014616 translation Effects 0.000 description 3
- YWDUZLFWHVQCHY-UHFFFAOYSA-N 1,3,5-tribromobenzene Chemical class BrC1=CC(Br)=CC(Br)=C1 YWDUZLFWHVQCHY-UHFFFAOYSA-N 0.000 description 2
- ZRYZBQLXDKPBDU-UHFFFAOYSA-N 4-bromobenzaldehyde Chemical class BrC1=CC=C(C=O)C=C1 ZRYZBQLXDKPBDU-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
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- 239000005457 ice water Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000001296 phosphorescence spectrum Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010898 silica gel chromatography Methods 0.000 description 2
- 239000000758 substrate Substances 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
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- XEZNGIUYQVAUSS-UHFFFAOYSA-N 18-crown-6 Chemical compound C1COCCOCCOCCOCCOCCO1 XEZNGIUYQVAUSS-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007445 Chromatographic isolation Methods 0.000 description 1
- VMQMZMRVKUZKQL-UHFFFAOYSA-N Cu+ Chemical compound [Cu+] VMQMZMRVKUZKQL-UHFFFAOYSA-N 0.000 description 1
- JWIPGAFCGUDKEY-UHFFFAOYSA-L O[Cr](Cl)(=O)=O.C1=CC=NC=C1 Chemical compound O[Cr](Cl)(=O)=O.C1=CC=NC=C1 JWIPGAFCGUDKEY-UHFFFAOYSA-L 0.000 description 1
- FCMKFNXOHUYWRU-UHFFFAOYSA-N [Cl].[Cr] Chemical compound [Cl].[Cr] FCMKFNXOHUYWRU-UHFFFAOYSA-N 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000004799 bromophenyl group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- QNEFNFIKZWUAEQ-UHFFFAOYSA-N carbonic acid;potassium Chemical compound [K].OC(O)=O QNEFNFIKZWUAEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002027 dichloromethane extract Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001857 fluorescence decay curve Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
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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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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—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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- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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Abstract
本发明提供了一种含9,9‑二甲基‑9,10‑二氢吖啶的化合物及其制备和应用,该化合物的名称是:(3,5‑双咔唑‑9‑苯基)‑(4‑(9,9‑二甲基‑9H‑吖啶‑10‑)‑苯基)‑甲酮。制备方法是:先制备9,9'‑(5‑溴‑1,3‑亚苯基)双(9H‑咔唑);然后将9,9'‑(5‑溴‑1,3‑亚苯基)双(9H‑咔唑)、t‑BuLi、4‑溴苯甲醛和PCC反应得到(3,5‑双咔唑‑9‑苯基)‑(4‑溴苯基)‑甲酮;最后将(3,5‑双‑咔唑‑9‑苯基)‑(4‑溴苯基)‑甲酮与9,10‑二氢‑9,9‑二甲基吖啶反应,得到(3,5‑双咔唑‑9‑苯基)‑(4‑(9,9‑二甲基‑9H‑吖啶‑10‑基)‑苯基)‑甲酮。该化合物具有优良的热稳定性能、电化学稳定性能、电荷传输性能和发光性能,可用作绿色有机电致发光材料。
Description
技术领域
本发明涉及含碳、氢、氧和氮的杂环化合物,具体属于一种以二苯甲酮为中心包含咔唑基团和9,9-二甲基-9,10-二氢吖啶基团的化合物的制备方法,以及该化合物作为有机电致发光材料的应用。
背景技术
在过去的几十年中,为了制造高效OLED,固态有机荧光材料的优化已经取得了重大进展。然而,经典OLED的最大内量子效率(IQE)被限制在25%。如此小的IQE极大地限制了OLED的发展。2012年,Adachi等人通过采用具有热激活延迟荧光(TADF)特性的荧光发光材料制造了非掺杂OLED器件,其外量子效率(EQE)达到19.3%。针对这种TADF材料在OLED中发光现象及性能分析,他们提出了TADF的发光机理:按照自旋统计规律,在电致激发的条件下,OLEDs中载流子复合产生单重激发态和三重激发态的比例为1:3,即25%的单重激发态和75%的三重激发态。传统的荧光材料直接产生的三重态以及通过系间窜越产生的三重态,一般都以非辐射跃迁的形式耗散掉,理论上最大内量子效率只有25%。但在TADF材料中,单重态和三重态之间的能级差比较小,三重态(T1)激子通过吸收环境中的热量,能够越过较小的能垒,以逆系间窜跃(reverse intersystem crossing,RISC)的形式回到单重态(S1)产生荧光。然而,大多数TADF分子有一些挑战,严重阻碍了其开发和实际应用。就像大多数TADF分子一样,由于π-π堆叠和激发子和激元复合体的形成,固体发光明显减弱,这被称为聚集引发的淬灭(ACQ)效应。
2001年,唐本忠课题组发现一些硅杂环戊二烯衍生物分子在溶液状态时不发光,但是在聚集状态时发光。他们把这种与ACQ效应完全相反的现象称为聚集诱导发光(aggregation-induced emission,AIE)。在随后的研究中,他们确定:在聚集体中,分子内旋转的限制(restriction of intramolecular rotation,RIR)是产生AIE效应的主要原因。基于RIR机理,唐本忠研究组和其他的研究组设计和合成了多种具有AIE性能的电致发光材料。AIE材料避免了荧光染料在固态下的浓度猝灭,这恰好解决了TADF材料的ACQ效应。
基于以上TADF材料及AIE材料的特点,如果能够将具有聚集诱导发光性能的基团和具有热活化延迟荧光性质的基团结合,将会得到可以更好地适用于OLED的聚集诱导延迟荧光材料(aggregation-induced delayed fluorescence,AIDF)。系统研究AIDF材料在OLED中的应用,对于提高OLED的性能具有重要的意义。
发明内容
本发明的目的在于提供一种含9,9-二甲基-9,10-二氢吖啶的化合物及其制备方法。
本发明的另一目的在于提供含9,9-二甲基-9,10-二氢吖啶的化合物作为发光材料在有机电致发光器件中的应用。
本发明提供的一种含9,9-二甲基-9,10-二氢吖啶的化合物,它是(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮,简称DCPDAPM,结构式为:
本发明提供的制备一种含9,9-二甲基-9,10-二氢吖啶的化合物的制备方法,反应式如下:
化合物DCPDAPM的具体制备方法,包括如下步骤:
(1)按摩尔比1:0.5:0.05:0.076:1.5取咔唑、1,3,5-三溴苯、CuI、18-冠醚-6、碳酸钾,然后将上述化合物加入邻二氯苯溶剂中,在氮气保护下,加热到180℃搅拌24h。之后冷却至室温,用饱和(NH4)2CO3溶液淬灭反应,用氯仿萃取;合并有机层,用蒸馏水洗涤三次,用无水硫酸镁干燥。然后旋干溶剂,得到粗产物,然后经过柱色谱分离,得到白色的固体化合物9,9'-(5-溴-1,3-亚苯基)双(9H-咔唑)。
(2)在氮气保护下,将5.0g(10.3mmol)9,9'-(5-溴-1,3-亚苯基)双(9H-咔唑)溶入70ml THF溶液中,随后将混合物冷却至-78℃,使用注射器滴加t-BuLi 17.4mL(22.62mmol),并保持-78℃搅拌1h,接着恢复室温搅拌9h。然后将混合溶液再次冷却至-78℃,并将5.7g(30.9mmol)4-溴苯甲醛缓慢加入到反应溶液中,并保持-78℃搅拌1h,然后恢复室温搅拌过夜。随后,在冰水浴下搅拌10min。之后加入50mL冰水淬灭反应并进行一步水解反应。所得混合物用二氯甲烷萃取三次。合并的有机层用无水硫酸镁干燥,然后旋干溶剂,得到粗产物,最后经过柱色谱分离得到纯产物。将得到的纯产物溶于40mL二氯甲烷中,然后加入6.7g(30mmol)氯铬酸吡啶鎓。将混合物搅拌12h。过滤沉淀物,减压蒸发溶剂。溶剂蒸发后,将粗产物通过硅胶柱色谱纯化,得黄色固体(3,5-双-咔唑-9-苯基)-(4-溴苯基)-甲酮。
(3)按摩尔比1:0.86:0.086:3.44:0.043取9,10-二氢-9,9-二甲基吖啶、(3,5-双-咔唑-9-苯基)-(4-溴苯基)-甲酮、P(t-Bu)3、K2CO3、Pd(OAc)2溶于干燥的甲苯溶剂中搅拌1h,然后加热到120℃回流12h。之后冷却至室温,将所得混合物倒入冰水中,用二氯甲烷萃取三次,合并有机层,用无水硫酸镁干燥。然后旋干溶剂,得到粗产物,经过柱色谱分离,得到白色固体化合物(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮。
本发明提供一种非掺杂的有机电致发光器件,包括发光层,所述的发光层为所述的含9,9-二甲基-9,10-二氢吖啶的化合物。
本发明提供一种非掺杂的有机电致发光器件,器件的结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm。
本发明提供一种掺杂的有机电致发光器件,包括发光层,所述的发光层含有所述的一种含9,9-二甲基-9,10-二氢吖啶的化合物。
本发明提供一种掺杂的有机电致发光器件,器件的结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物(质量分数6%-20%):CBP,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm。
本发明提供的非掺杂发光器件经测试表明:发光器件的启亮电压为3.2V,最大亮度为123371cd/m2,最大电流效率为26.88cd/A。三种掺杂的发光器件(将DCPDAPM分别按照质量分数6%,10%,20%掺杂到CBP材料中)经测试表明:发光器件的启亮电压分别为3.6V、3.6V、3.6V,最大亮度分别为67874.5cd/m2、89010cd/m2、116100cd/m2,最大电流效率分别为40.68cd/A、50.14cd/A、61.83cd/A。这说明该化合物是适宜于有机电致发光器件的性能优良的发光材料,具有广泛的应用前景。
与现有技术相比,本发明具有的优点和效果:
1.本发明合成的一种以二苯甲酮为中心包含咔唑基团,9,9-二甲基-9,10-二氢吖啶基团的化合物,具有热稳定性好,发光效率高、传输性能好的特点,可作为器件的发光材料。
2.本发明提供的一种以二苯甲酮为中心包含咔唑基团,9,9-二甲基-9,10-二氢吖啶基团的化合物的制备方法简便,合成步骤简单,产物产率及纯度高,操作易行。
3.本发明提供的一种以二苯甲酮为中心包含咔唑基团,9,9-二甲基-9,10-二氢吖啶基团的化合物可用作有机电致发光器件中的绿色发光材料,具有广阔的应用前景。
附图说明
图1化合物DCPDAPM的紫外吸收光谱
图2化合物DCPDAPM的AIE发光光谱
图3化合物DCPDAPM的固态磷光和荧光光谱
图4化合物DCPDAPM的荧光衰减曲线
图5发光器件的电流密度-电压-亮度曲线
图6发光器件的电流效率-电流密度曲线
图7发光器件的电致发光光谱
具体实施方式
实施例1.(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮的制备,步骤如下:
(1)9,9'-(5-溴-1,3-亚苯基)双(9H-咔唑)的合成及表征
将咔唑(8.35g,50mmol),1,3,5-三溴苯(7.85g,25mmol),CuI(0.48g,2.5mmol),18-冠醚-6(1.0g,3.8mmol),碳酸钾(18.3g,75mmol)溶入到邻二氯苯(100mL)中,并在氮气下加热到180℃搅拌24h。之后冷却至室温,用饱和(NH4)2CO3溶液淬灭反应,用氯仿萃取混合物;合并有机层,用蒸馏水洗涤三次,用无水硫酸镁干燥。然后旋干溶剂,得到粗产物,经过柱色谱分离,得到白色固体化合物9,9'-(5-溴-1,3-亚苯基)双(9H-咔唑)(6.0g,产率50%)。1H NMR(600MHz,CDCl3):δ8.14(d,J=7.7Hz,4H),7.86(d,J=1.7Hz,2H),7.79(s,1H),7.54(d,J=8.2Hz,4H),7.46(t,J=7.6Hz,4H),7.33(t,J=7.4Hz,4H).
(2)(3,5-双-咔唑-9-苯基)-(4-溴苯基)-甲酮的合成及表征;
在氮气保护下将5.0g(10.3mmol)9,9'-(5-溴-1,3-亚苯基)双(9H-咔唑)溶于70mlTHF溶剂中。将混合物冷却至-78℃,并使用注射器滴加17.4mL(22.62mmol)t-BuLi,并保持-78℃搅拌1h,随后恢复室温搅拌9h。然后将混合溶液再次冷却至-78℃,将5.7g(30.9mmol)4-溴苯甲醛缓慢加入到反应溶液中,并保持-78℃搅拌1h,然后恢复室温搅拌过夜。随后,在冰水浴下搅拌10min。之后加入50mL冰水淬灭反应并进行一步水解反应。所得混合物用二氯甲烷萃取三次。合并的有机层用无水硫酸镁干燥,然后旋干溶剂,得到粗产物,然后经过柱色谱分离得到纯产物。将得到的纯产物溶于40mL二氯甲烷中,然后加入6.7g(30mmol)氯铬酸吡啶鎓。将混合物搅拌12h。过滤沉淀物,减压蒸发溶剂。溶剂蒸发后,将粗产物通过硅胶柱色谱纯化,得黄色固体(3,5-双-咔唑-9-基-苯基)-(4-溴-苯基)-甲酮(产率45%)。1HNMR(600MHz,CDCl3),δ(ppm):δ8.19(dd,J=7.9,5.1Hz,3H),7.99-7.87(m,4H),7.69(d,J=8.2Hz,2H),7.51(t,J=7.7Hz,2H),7.46–7.35(m,6H),7.25(t,J=7.4Hz,2H),6.87(dd,J=47.8,8.4Hz,4H).
(3)(3,5-双-咔唑-9-苯基)-(4-溴苯基)-甲酮的合成及表征;
在氮气保护下,取0.67g(1.86mmol)9,10-二氢-9,9-二甲基吖啶、(3,5-双-咔唑-9-苯基)-(4-溴苯基)-甲酮(1.0g,1.6mmol)、P(t-Bu)3(0.16mL,0.16mmol)、K2CO3(0.88g,6.4mmol)溶于50ml甲苯溶液中,将混合物在氮气保护下搅拌1h。随后,向反应溶液中加入Pd(OAc)2(0.018g,0.08mmol)继续搅拌30min。然后加热到120℃回流12h。之后冷却至室温,将所得混合物倒入冰水中,用二氯甲烷萃取三次,合并有机层,用无水硫酸镁干燥。然后旋干溶剂,得到粗产物,经过柱色谱分离,得到白色固体化合物(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮。
表征数据:1H NMR(600MHz,CDCl3),δ(ppm):δ8.31(d,J=8.2Hz,1H),8.20(d,J=7.5Hz,3H),8.06-7.87(m,5H),7.75-7.67(m,3H),7.55-7.33(m,15H),7.06-6.94(m,3H),6.73(d,J=8.3Hz,1H),1.62(s,6H).13C NMR(151MHz,CDCl3),δ(ppm):δ198.08,143.73,143.11,136.21,132.99,132.72,132.28,131.08,130.36,129.91,129.28,129.16,127.98,126.95,126.40,126.23,123.79,123.57,123.47,123.10,122.94,116.94,112.73,112.63,38.78,33.96.m/z:[M+H]+calcd for C52H37N3O[M+1]+:720.2937,found720.2941.Anal.Calcd for C52H37N3O:C 86.76%,H 5.18%,and N 5.84%.Found:C86.78%,H 5.16%and N 5.83%.
化合物DCPDAPM的紫外吸收光谱、AIE发光光谱、固态磷光和荧光光谱、荧光衰减曲线,见图1-4。
实施例2.有机电致发光器件的结构、制备和性能:
我们制备的一种非掺杂的有机电致发光器件,器件的结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm;三种掺杂的有机电致发光器件结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物(质量分数6%,10%,20%):CBP,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm。其中,HATCN作为空穴注入层,TAPC作为空穴传输层;(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮(化合物DCPDAPM)作为发光层;TmPyPB作为电子传输层。
器件的制备步骤:先用丙酮擦洗ITO玻璃,然后用清水冲洗,接着用清洗液超声清洗,最后用清水超声洗。洗净的基片用氮气吹干,最后用紫外线-臭氧处理以充分洗净表面。根据所设计的器件的结构按顺序依次在ITO基片上蒸镀20nm厚的HATCN作为空穴注入层、蒸镀30nm厚的TAPC作为空穴传输层,蒸镀25nm厚的(3,5-双咔唑-9-苯基)-(4-(9,9-二甲基-9-吖啶-10-)-苯基)-甲酮(化合物DCPDAPM(质量分数6%,10%,20%)):CBP作为发光层,蒸镀25nm厚的TmPyPB作为电子传输层,蒸镀1nm厚的氟化锂作为电子注入层,蒸镀150nm厚的铝作为器件的阴极。整个蒸镀过程均在高真空下进行,有机层的蒸镀速度控制在0.2-0.5nm/s,金属铝层的蒸镀速度控制在0.5-1nm/s。
本发明提供的一种非掺杂发光器件A经测试表明:发光器件的启亮电压为3.2V,最大亮度为123371cd/m2,最大电流效率为26.88cd/A。三种掺杂的发光器件B、C、D(将DCPDAPM分别按照质量分数6%,10%,20%掺杂到CBP材料中)经测试表明:发光器件的启亮电压分别为3.6V、3.6V、3.6V,最大亮度分别为67874.5cd/m2、89010cd/m2、116100cd/m2,最大电流效率分别为40.68cd/A、50.14cd/A、61.83cd/A。发光器件的优良性能表明化合物DCPDAPM是适宜于有机电致发光器件的性能优良的发光材料,具有广泛的应用前景。见图5、6、7。
Claims (8)
1.一种含9,9-二甲基-9,10-二氢吖啶的化合物,其特征在于,结构式为:
2.如权利要求1所述的一种含9,9-二甲基-9,10-二氢吖啶的化合物的制备方法,其特征在于,反应式如下:
3.如权利要求1所述的一种含9,9-二甲基-9,10-二氢吖啶的化合物用作绿色有机电致发光材料。
4.如权利要求1所述的含9,9-二甲基-9,10-二氢吖啶的化合物在有机电致发光器件中的应用。
5.一种非掺杂的有机电致发光器件,包括发光层,其特征在于,所述的发光层为如权利要求1所述的一种含9,9-二甲基-9,10-二氢吖啶的化合物。
6.一种非掺杂的有机电致发光器件,其特征在于,器件的结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/权利要求1所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm。
7.一种掺杂的有机电致发光器件,包括发光层,其特征在于,所述的发光层含有如权利要求1所述的一种含9,9-二甲基-9,10-二氢吖啶的化合物。
8.一种掺杂的有机电致发光器件,其特征在于,器件的结构为:ITO/HATCN,厚度20nm/TAPC,厚度30nm/权利要求1所述的含9,9-二甲基-9,10-二氢吖啶结构的化合物(质量分数6%-20%):CBP,厚度25nm/TmPyPB,厚度40nm/LiF,厚度1nm/Al,厚度150nm。
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CN114773319A (zh) * | 2022-05-10 | 2022-07-22 | 山西大学 | 含二苯砜、9,9-二甲基-9,10-二氢吖啶和9-苯基咔唑基团的化合物 |
CN114773319B (zh) * | 2022-05-10 | 2023-04-18 | 山西大学 | 含二苯砜、9,9-二甲基-9,10-二氢吖啶和9-苯基咔唑基团的化合物 |
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