文献类型：期刊文献

英文题名：Synthesis and photochromism of a spirooxazine derivative featuring a carbazole moiety: Fast thermal bleaching and excellent fatigue resistance

作者：Zou, Qi[1,2];Li, Xin[3];Zhou, Ji[2];Bai, Kangkang[1];Agren, Hans[3]

机构：[1]Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, SE-10691 Stockholm, Sweden

年份：2014

卷号：107

起止页码：174

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20141817670846);WOS:【SCI-EXPANDED(收录号:WOS:000336828900024)】；

基金：This work was financially supported by Supported by Innovation Program of Shanghai Municipal Education Commission (14YZ128), and the Science and Technology Commission of Shanghai Municipality (14YF1410900), PR China.

语种：英文

外文关键词：Photochromism; Spirooxazine; Thermal fading kinetics; Theoretical simulations; Carbazole; Solvation

摘要：A novel photochromic spirooxazine derivative bearing a carbazole moiety (SOC) was synthesized and studied in solution under flash photolysis conditions. It is found to exhibit excellent characteristics like high photochromic response, large steady-state optical density, fast thermal bleaching rate and good fatigue-resistance. The effect of different solvents on the photochromic properties of the compound was evaluated, revealing that the photochromic properties can be modulated by different solvents based on the corresponding polarity. The mechanism and kinetics of the thermal fading process of compound SOC were additionally investigated by theoretical simulations, where the isomerization pathway from the trans-trans-cis conformation was found to be several times faster than that from the cis-trans-cis conformation. This type of fast-bleaching and fatigue-resistent photochromic compounds is expected to pave an exciting avenue in future development of high-performance photochromic materials. (C) 2014 Elsevier Ltd. All rights reserved.