文献类型：期刊文献

英文题名：A TPE-benzothiazole piezochromic and acidichromic molecular switch with high solid state luminescent efficiency

作者：Ma, Chunping He, Jiajun Xu, Bingjia Xie, Gaoyi Xie, Zongliang Mao, Zhu Chi, Zhenguo

第一作者：马春平

通信作者：Chi, ZG[1];Xie, GY[2];Xie, GY[3]|[144405fc8e0c6e3abb915]谢高艺;

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[3]Sun Yat Sen Univ, Sch Chem & Chem Engn, PCFM Lab,State Key Lab OEMT, GDHPPC Lab,Guangdong Engn Technol Res Ctr High Pe, Guangzhou 510275, Guangdong, Peoples R China;[4]South China Normal Univ, Sch Chem & Environm, Key Lab Theoret Chem Environm, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;[5]Guizhou Inst Technol, Coll Chem Engn, Guiyang 550003, Guizhou, Peoples R China;[6]Guizhou Mat Ind Technol Res Inst, Guiyang 550014, Guizhou, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Sun Yat Sen Univ, Sch Chem & Chem Engn, PCFM Lab,State Key Lab OEMT, GDHPPC Lab,Guangdong Engn Technol Res Ctr High Pe, Guangzhou 510275, Guangdong, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Chem Engn, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Guizhou Mat Ind Technol Res Inst, Guiyang 550014, Guizhou, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2018

卷号：8

期号：12

起止页码：6252-6258

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20180704807755);Scopus(收录号：2-s2.0-85041961347);WOS:【SCI-EXPANDED(收录号:WOS:000425034000009)】；

基金：These authors contributed equally to the preparation of this work. This research was supported by the National Science Foundation of China (Nos. 51503046, 51603233, 51473185 and 51603232), 863 Program (SS2015AA031701), the Guizhou Province Science and Technology Planning Project (Nos. [2015]2068 and [2015]2078) and the Research Project for High-level Talents of Guizhou Institute of Technology (XJGC201503).

语种：英文

外文关键词：Fluorescence - Molecules - Protonation - Quantum theory - Quantum yield - Single crystals

摘要：A new organic compound, namely B-TPEAN, was constructed by using tetraphenylethylene, acrylonitrile and benzothiazole as building blocks. Herein, results of single crystal structure analysis and theoretical calculation for the as-synthesized compound were presented. Photophysical properties, including UV-visible absorption, photoluminescence and fluorescent quantum yield, were also well studied. B-TPEAN was found to show excellent aggregation-induced emission (AIE) properties and high quantum yield (up to 85%) in the solid-state. These results should be attributed to the positive effect of a combination of two typical AIE moieties in one molecule. Upon grinding, the emission color of the pristine sample for B-TPEAN changed from bluish green (lambda(em, max) = 497 nm) to yellow (lambda(em, max) = 567 nm), exhibiting a remarkable piezochromism. Moreover, by fuming with acid vapor, both of the pristine and the ground samples of B-TPEAN showed dramatic decreases in fluorescence quantum yields and large bathochromic shifts in PL maxima up to 53 nm and 80 nm, respectively, indicating a success in achieving multi-stimuli-responsive luminophore with high contrast in both emission intensity and color. Further investigation revealed that the acidifluorochormism of the samples was caused by the protonation of the benzothiazole moiety, leading to an enhancement of ICT effect in the protonated molecules.