吩嗪
转鼓
区域选择性
分子内力
电泳剂
荧光
化学
光化学
亲核细胞
芳基
组合化学
烷基
立体化学
有机化学
催化作用
物理
量子力学
作者
Huaxing Zhang,Qiang Guo,Cheng Hu,Chunhao Ran,Di Wu,Jingbo Lan
摘要
Herein, Ag(I)-promoted regioselective intramolecular radical nucleophilic addition/rearrangement of 2-aryl diazaboroles has been accomplished for the first time to construct phenazine structures. This protocol is an umpolung strategy based on the classical electrophilic mechanism, and therefore, a reversed regioselectivity was observed, which provides an opportunity to prepare sterically hindered phenazines. The resulting thermally activated delayed fluorescence (TADF) materials based on phenazine exhibit emission bands from green to red with high quantum yields and moderate fluorescence lifetimes as solid films.
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