化学
杂蒽
准分子
芴
光化学
荧光
电子受体
接受者
有机化学
物理
凝聚态物理
聚合物
量子力学
作者
Hong‐Tao Cao,Chao-Shen Hong,Danqing Ye,Lihui Liu,Linghai Xie,Shufen Chen,Chen Sun,Shasha Wang,Hongmei Zhang,Wei Huang
标识
DOI:10.1016/j.molstruc.2019.06.003
摘要
Herein, a tetracyano-substituted spiro[fluorene-9,9′-xanthene] (SFX) derivative, 2,3′,6′,7-tetracarbonitrile-SFX (TCNSFX) was conveniently synthesized as electron acceptor for combining with tris(4-carbazoyl-9-ylphenyl)amine (TCTA) as electron donor to form exciplex emitter. Subsequently, exciplex-TADF was successfully realized with photoluminescence quantum yield of 29% and electroluminescence efficiency of 6.0 cd A−1 in TCTA:TCNSFX. The exciplex-TADF performance of TCTA:TCNSFX is related to the stronger electron-accepting ability through tetracyano-substitution and large driving force in the exciplex emission. Although the emission efficiencies are slightly low, this work enriches the design system of electron acceptors for exciplex-TADF, simultaneously offering an efficient and convenient approach to developing low-cost materials and devices for TADF.
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