四苯乙烯
荧光
光化学
三苯胺
共轭微孔聚合物
材料科学
共轭体系
猝灭(荧光)
聚合
微型多孔材料
吸收(声学)
聚合物
化学
聚集诱导发射
物理
复合材料
量子力学
作者
Llying Ren,Tong-Mou Geng
标识
DOI:10.1007/s12034-022-02714-4
摘要
Two tetraphenylethylene-based fluorescent conjugated microporous polymers (TTTPT and TTDAT) were obtained by the Friedel−Crafts polymerization reactions catalysed by CH3SO3H. In virtue of containing tetraphenylethylene, triphenylamine and s-triazine units in their porous skeletons, the resulting TTTPT and TTDAT show excellent fluorescence sensing performance for trinitrophenol (TNP) with high quenching coefficients of 1.66 × 104 and 1.31 × 105 l mol–1, respectively. TTDAT can also sense to dinitrophenol (DNP) with the Ksv of 2.70 × 104 l mol–1. The fluorescent quenching mechanisms of TTTPT and TTDAT for selective detecting TNP attribute to conventional photoinduced electron-transfer mechanism, absorption competition quenching mechanism and/or the resonant energy transfer mechanism.
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