Cyano and Isocyano-substituted Tetraphenylethylene with AIE Behavior and Mechanoresponsive Behavior  

作　　者：Qing Liu Shusheng Yue Zhangqiang Yan Yongfa Xie Hu Cai 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第4期75-82,共8页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(21905127,22065023,21861026,22075123);Natural Science Foundation of Jiangxi Province(20212BAB203029)。

摘　　要：Dual-functional materials with AIE behavior and mechanoresponsive behavior have attracted considerable attention due to their promising applications in mechano-sensors,optical storage,solid-state optoelectric devices and bioimage systems.AIEgens bearing tetraphenylethylene(TPE)core become elementary building blocks in many fluorescent functional materials.In this article,cyanoand isocyano-electronic withdrawing groups are incorporated with TPE skeleton to form tetracyanophenylethylene(TPE-CN)and tetraisocyanophenylethylene(TPE-NC).Their structures are confirmed by NMR,Mass Spectra and single crystal X-ray measurement.These two isomers reflect aggregation-induced emission(AIE)property in solution state and mechanochromic behavior in solid state.Interestingly,their luminescent intensities,quantum yields and fluorescent lifetime in solid state have an obvious increase upon grinding.The theoretical calculation of these two compounds clarify their difference in optical properties.The mechanochromic mechanism is also intensively explained by powder X-ray measurements.

关 键 词：cyano-group isocyano-group tetraphenylethlene(TPE) aggregation induced emission(AIE) mechanochromic 

分 类 号：TQ241.2[化学工程—有机化工]