文献类型：期刊文献

英文题名：Halogen effect on mechanofluorochromic properties of alkyl phenothiazinyl phenylacrylonitrile derivatives

作者：Ma, Chunping Zhang, Xiqi Yang, Yang Ma, Zhiyong Yang, Liutao Wu, Yujiao Liu, Hongliang Jia, Xinru Wei, Yen

第一作者：Ma, Chunping

通信作者：Ma, CP[1];Wei, Y[2];Zhang, XQ[3]|[144404c59386af0196f94]马春平;

机构：[1]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Peoples R China;[2]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;[3]Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China;[4]Peking Univ, Coll Chem & Mol Engn, Minist Educ, Beijing Natl Lab Mol Sci,Key Lab Polymer Chem & P, Beijing 100871, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Peoples R China;corresponding author), Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;corresponding author), Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2016

卷号：129

起止页码：141-148

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20161002075066);Scopus(收录号：2-s2.0-84959535853);WOS:【SCI-EXPANDED(收录号:WOS:000374356700016)】；

基金：This research was supported by the Guizhou Province Science and Technology Planning Project ([2015]2068), the National Science Foundation of China (Nos. 21134004, 21474057 and 51503046), the National 973 Project (No. 2011CB935700), and the Research Project for High-level Talents of Guizhou Institute of Technology (XJGC201503).

语种：英文

外文关键词：Aggregation-induced emission; Mechanofluorochromic property; Halogen effect; Alkyl phenothiazinyl phenylacrylonitrile derivative; Crystalline-amorphous phase transformation; Smart fluorescent materials

摘要：Three novel alkyl phenothiazinyl phenylacrylonitrile derivatives (C12F, C12Cl, and C12Br) with different halogen end groups (fluorine, chlorine, and bromine) were synthesized with ultra-high yield (>90%) and successfully confirmed according to standard spectroscopic methods. All these compounds were demonstrated with apparent twisted intramolecular charge transfer (TICT) and aggregation-induced emission (AIE) features. The halogen effect rendered them different electronic donor-acceptor behaviours, and gave birth to peculiar different mechanofluorochromic properties. The fluorine-substituted compound (C12F) showed obvious red-shifted mechanofluorochromic feature, while almost no mechanofluorochromic characteristic existed in the chlorine- (C12Cl) and bromine-substituted (C12Br) compounds. The mechanofluorochromic mechanism of C12F was investigated and attributed to the phase transformation from crystalline to amorphous state between the original and ground samples, easy crystallinity of the compound, straight conformation of alkyl chain, higher energy gap, and significant decrease of weighted mean lifetime. Moreover, C12F showed reversible mechanofluorochromic behaviour and reproducibility by annealing the ground sample, making it promising dual responsive and smart fluorescent materials for fluorescence switches and mechanosensors. The discussion of halogen effect on mechanofluorochromic properties in this work would provide a new way to adjust the fluorescent feature of mechanofluorochromic materials. (C) 2016 Elsevier Ltd. All rights reserved.