文献类型：期刊文献

英文题名：Alkyl length dependent mechanofluorochromism of AIE-based phenothiazinyl fluorophenyl acrylonitrile derivatives

作者：Ma, Chunping Zhang, Xiqi Yang, Liutao Li, Yang Liu, Hongliang Yang, Yang Xie, Gaoyi Ou, Yong-Cong Wei, Yen

第一作者：马春平

通信作者：Zhang, XQ[1];Wei, Y[2];Wei, Y[3];Xie, GY[4]|[144405fc8e0c6e3abb915]谢高艺;

机构：[1]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Peoples R China;[2]Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China;[3]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;[4]Tsinghua Univ, Tsinghua Ctr Frontier Polymer Res, Beijing 100084, Peoples R China;[5]Natl Engn Res Ctr Compounding & Modificat Polymer, R&D Dept, Guiyang 550014, Guizhou, Peoples R China;[6]South China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, 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), Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China;corresponding author), Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;corresponding author), Tsinghua Univ, Tsinghua Ctr Frontier Polymer Res, Beijing 100084, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, R&D Dept, Guiyang 550014, Guizhou, Peoples R China.|贵州理工学院化学工程学院

年份：2017

卷号：136

起止页码：85-91

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20163402735305);Scopus(收录号：2-s2.0-84983041385);WOS:【SCI-EXPANDED(收录号:WOS:000387837200011)】；

基金：This research was supported by the Guizhou Province Science and Technology Planning Project ([2015]2068), the National Science Foundation of China (Nos. 51603211, 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：Alkyl length dependent; Mechanofluorochromism; Aggregation-induced emission; Acrylonitrile derivatives; Molecular polarity; Phase transformation

摘要：Four alkyl phenothiazinyl fluorophenyl acrylonitrile derivatives (PhC3F, PhC6F, PhC10F, and PhC12F) with different length of alkyl chains were synthesized in high yield. The compounds showed obvious aggregation-induced emission (ME) and alkyl length dependent mechanofluorochromic (MFC) properties. PhC3F with propyl chain and PhC12F with dodecyl chain showed obvious and reversible MFC behaviours, while PhC6F with hexyl chain and PhC10F with decyl chain exhibited little MFC property. Small and wide-angle X-ray scattering indicated the MFC behaviour of PhC3F and PhC12F were attributed to the phase transformation from crystalline to amorphous state, while PhC6F maintained excellent crystalline performance before and after grinding, which was also evidenced by differential scanning calorimetry result. Quantum mechanical computations further revealed PhC6F had high molecular polarity, which greatly improved its crystalline performance, and made its original aggregated morphology hard to damage, then brought about little MFC diversification. PhC10F showed the highest molecular polarity and least MFC behaviour. We concluded that obvious MFC feature derived from appropriate crystalline performance, favourable molecular polarity and energy gap. (C) 2016 Elsevier Ltd. All rights reserved.