文献类型：期刊文献

英文题名：Solvatochromism and mechanochromism observed in a triphenylamine derivative

作者：Guo, Chunyang[1,2];Zhang, Qi[3];Zhu, Bingqing[3];Zhu, Bin[1,2];Zhou, Weiqun[4];Ren, Guobin[1,2];Mei, Xuefeng[3]

机构：[1]East China Univ Sci & Technol, Sch Pharm, Lab Pharmaceut Crystal Engn & Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Pharm, Shanghai Key Lab New Drug Design, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Materia Med, Pharmaceut Analyt & Solid State Chem Res, Shanghai 201203, Peoples R China;[4]Soochow Univ, Sch Chem & Chem Engn & Mat Sci, 199 Renai Rd, Suzhou 215123, Peoples R China

年份：2019

卷号：75

起止页码：839

外文期刊名：ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS

收录：;EI(收录号：20194507623765);WOS:【SCI-EXPANDED(收录号:WOS:000492842900009)】；

基金：The following funding is acknowledged: National Natural Science Foundation of China (grant No. 21576080; grant No. 21776073); Shanghai Natural Science Foundation (grant No. 18ZR1447900); Youth Innovation Promotion Association of CAS (grant No. 2016257); CAS Key Technology Talent Program; SANOFI-SIBS Scholarship for funding.

语种：英文

外文关键词：donor-pi-acceptor fluorescent dye; triphenylamine (TPA) derivative; intramolecular charge transfer; intermolecular charge transfer; aggregation-induced emission

摘要：A donor-pi-acceptor fluorescent dye, 4-[N,N-di(4-phenyl)amino]benzaldehyde 4-chlorobenzoyl hydrazone (TPA-CBH), based on a triphenylamine derivative (TPA) and 4-chlorobenzoyl hydrazine (CBH) was designed and synthesized. The optical properties of this luminogen were investigated in solutions as well as in the solid states. In the intramolecular charge-transfer (CT) mechanism, TPA-CBH exhibits solvatochromism when dissolved in various polar solvents. Aggregation-induced emission was observed with the changes of tetrahydrofuran/water ratios. In the solid state, mechanochromic fluorescence is observed when the samples are stressed under different conditions. Based on structural analyses and theoretical calculations, it is found that intra- and intermolecular CT processes play a key role in the diversity of fluorescent properties.