三联烯
二苯甲酮
化学
咔唑
二氯甲烷
量子产额
发光
产量(工程)
元素分析
荧光
光化学
兴奋剂
核化学
分析化学(期刊)
物理化学
有机化学
光电子学
材料科学
物理
量子力学
溶剂
冶金
作者
Xuewen Yan,Xiaochen Zhang,Ruige Su,Shengping Zheng,Wenming Su,Tianzhi Yu
标识
DOI:10.1016/j.molstruc.2023.137039
摘要
Two new V-shaped bis-coumarins (VBC) with the benzophenone-imbedded triptycene and carbazole, VBC-CO-TTC and VBC-CO-Cz, were synthesized and characterized by NMR (1H and 13C), high resolution mass spectrometry and elemental analysis, and their thermal stabilities and photophysical and electrochemical properties were systematically studied. They exhibited strong green emission with high fluorescence quantum yield of 90.4% and 93.65% in dichloromethane solution, respectively. The combination of theoretical research and experimental data revealed the structure-property relationship of the functional groups grafted onto the V-shaped bis-coumarins. Moreover, the doped devices treated with the blend of CBP:VBC derivatives as the emitting layers showed green emission, in which the VBC-CO-Cz doped devices exhibited an maximum external quantum efficiency (EQEmax) of 2.66%, while the VBC-CO-TTC doped devices showed an EQEmax of 1.79%, at the doping concentration of 5 wt%.
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