Suleymanova Alfiya F, Shafikov Marsel Z, Chen Xinrui, Wang Yafei, Czerwieniec Rafal, Bruce Duncan W
Department of Chemistry, University of York, Heslington, YORK YO10 5DD, UK.
Institut für Physikalische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany.
Phys Chem Chem Phys. 2022 Sep 21;24(36):22115-22121. doi: 10.1039/d2cp02684h.
The device performance is reported for three compounds which show both thermally activated delayed fluorescence and liquid crystallinity, and use the donor 3,6-bis(3,4-didodecyloxyphenyl)carbazole. Two of the compounds, whose photophysics were reported previously, are based on a terephthalonitrile acceptor. A third and new compound is based on an isophthalonitrile acceptor and shows a more temperature-accessible mesophase and enhanced solution emission quantum yield. Two of the compounds show device external quantum efficiencies of between 2-3% and exhibit very small efficiency roll off. The responses are evaluated in terms of the specific nature of the materials.
报道了三种兼具热激活延迟荧光和液晶性的化合物的器件性能，这些化合物使用了供体3,6-双(3,4-二十二烷氧基苯基)咔唑。其中两种化合物的光物理性质此前已有报道，它们基于对苯二甲腈受体。第三种新化合物基于间苯二甲腈受体，显示出更易于通过温度调节的中间相以及增强的溶液发射量子产率。其中两种化合物的器件外量子效率在2%至3%之间，且效率滚降非常小。根据材料的具体性质对响应进行了评估。
