A novel blue-emitting material, 2-tert-butyl-9,10-bis[4-(1,2,2-triphenylvinyl)phenyl]anthracene (TPVAn), which contains an anthracene core and two tetraphenylethylene end-capped groups, has been synthesized and characterized. Owing to the presence of its sterically congested terminal groups, TPVAn possesses a high glass transition temperature (155 °C) and is morphologically stable. Organic light-emitting diodes (OLEDs) utilizing TPVAn as the emitter exhibit bright saturated-blue emissions (Commission Internationale de L'Eclairage (CIE) chromaticity coordinates of x = 0.14 and y = 0.12) with efficiencies as high as 5.3 % (5.3 cd A^–1)—the best performance of non-doped deep blue-emitting OLEDs reported to date. In addition, TPVAn doped with an orange fluorophore served as an authentic host for the construction of a white-light-emitting device that displayed promising electroluminescent characteristics: the maximum external quantum efficiency reached 4.9 % (13.1 cd A^–1) with CIE coordinates located at (0.33, 0.39).

中文翻译：

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基于以四苯乙撑基团封端的蒽类衍生物为基的高效非掺杂蓝光发光二极管^†

一种新颖的发蓝色光的材料，2-叔丁基-9,10-双[4-（1,2,2-三苯基乙烯基）苯基]蒽（TPVAn），它包含蒽核心和两个四苯基亚乙基封端的基团，已经合成和表征。由于其空间上拥挤的端基的存在，TPVAn具有较高的玻璃化转变温度（155°C），并且形态稳定。使用TPVAn作为发射器的有机发光二极管（OLED）表现出明亮的饱和蓝色发射（Commission Internationale de L'Eclairage（CIE）色度坐标x  = 0.14和y  = 0.12），效率高达5.3％（5.3 cd） A ^–1）—迄今为止，未掺杂的深蓝光OLED的最佳性能。此外，掺有橙色荧光团的TPVAn用作构造发白光器件的可靠主体，该器件显示出令人鼓舞的电致发光特性：在CIE坐标位于的位置，最大外部量子效率达到4.9％（13.1 cd A ^–1）。在（0.33，0.39）。