文献类型：期刊文献

英文题名：A tricolor photochromic hybrid tetra-arylethene with > 99 % E-Z isomerization and photocyclization/cycloreversion

作者：Lei, Wei[1];Chen, Siyuan[1];Zeng, Yan[1];Wang, Xuewen[1];Luo, Qianfu[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Dept Chem, Shanghai 200237, Peoples R China

年份：2025

卷号：239

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20251318123651);WOS:【SCI-EXPANDED(收录号:WOS:001459926100001)】；

语种：英文

外文关键词：Z isomerization; Tricolor photochromism; Photo-gated thermal reversibility

摘要：We present the rational design and synthesis of an innovative tricolor photochromic switch featuring a unique molecular architecture combining an E-tetra-arylethene core with dual benzophenone moieties. The system demonstrates exceptional bidirectional photoresponsive behavior, achieving near-quantitative E-Z isomerization (yields >99%) and efficient photoinduced cyclization/cycloreversion reactions in tetrahydrofuran solution. This sophisticated photochromic interplay enables precise tricolor modulation through controlled light irradiation. Notably, the system exhibits light-regulated thermal reversibility, offering unprecedented control over its relaxation dynamics. The photochromic performance remains robust across different matrices, including PMMA polymer films and cellulose filter paper substrates. This multi-addressable color-switching platform demonstrates promising potential for advanced optical applications, particularly in dynamic information encryption systems and multi-level anti-counterfeiting technologies.