Abstract New triphenylethylene-based derivatives, containing 2,6-di-tert-butylcarbazole or 9,9-dimethyl-9,10-dihydroacridine as donor moieties and phenylene or tetrafluorophenylene linking bridges were synthesised by Heck coupling and characterized. The synthesized compounds emitted blue light in the solid state with emission maxima in the range of 478–487 nm and photoluminescence quantum yields of 16–29%. In thermogravimetric analysis they demonstrated sublimation with 5% weight loss temperatures in the range of 307–355 °C. They exhibited glass-forming properties with glass-transition temperatures of 89–123 °C. The solid-state ionization potentials and electrochemical band gaps ranged from 5.88 to 6.37 eV and from 3.30 to 3.57 eV, respectively. Three compounds demonstrated bipolar semiconducting properties. Derivative of triphenylethylene and 2,6-di-tert-butylcarbazole with phenylene bridge showed highest hole and electron drift mobilities reaching 3.07 × 10−3 cm2/Vs and 4.2 × 10−3 cm2/Vs respectively at high electric field. Utilizing compounds in organic light‐emitting diodes as emitters external quantum efficiency of 2% was observed.

中文翻译：

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蓝色非掺杂有机发光二极管显示聚集诱导发射增强和平衡双极电荷传输的三苯乙烯基发射体

摘要 通过Heck偶联合成了以2,6-二叔丁基咔唑或9,9-二甲基-9,10-二氢吖啶为供体部分和亚苯基或四氟亚苯基连接桥的新型三苯基乙烯衍生物并进行了表征。合成的化合物在固态下发射蓝光，发射最大值在 478-487 nm 范围内，光致发光量子产率为 16-29%。在热重分析中，他们证明了在 307-355 °C 范围内具有 5% 重量损失温度的升华。它们表现出玻璃化特性，玻璃化转变温度为 89–123 °C。固态电离电位和电化学带隙范围分别为 5.88 至 6.37 eV 和 3.30 至 3.57 eV。三种化合物表现出双极半导体特性。三苯基乙烯和2的衍生物，具有亚苯基桥的 6-二叔丁基咔唑在高电场下表现出最高的空穴和电子漂移迁移率，分别达到 3.07 × 10−3 cm2/Vs 和 4.2 × 10−3 cm2/Vs。观察到在有机发光二极管中使用化合物作为发射器的外部量子效率为 2%。