文献类型：期刊文献

英文题名：Dual-Responsive Thermally Activated Delayed Fluorescence of Spiropyran Derivatives

作者：Ma, Liangwei;Wang, Guanghui;Ding, Bingbing;Ma, Xiang[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：4

期号：6

起止页码：2080

外文期刊名：CCS CHEMISTRY

收录：WOS:【ESCI(收录号:WOS:000810728900025)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (nos. 21788102, 22020102006, 21722603, and 21871083), project support by the Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), Program of Shanghai Academic/Technology Research Leader (no. 20XD1421300), "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (no. 19SG26), the Innovation Program of Shanghai Municipal Education Commission (no. 2017 01-07-00-02-E00010), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：photochromism; spiropyran; mechano-chromism; TADF; long-lived emission

摘要：For the first time, a series of photochromic dyes SP1-3 with dual-responsive thermally activated delayed fluorescence (TADF) characteristics were reported in this research. Benefitting from the reversible light-responsive property of SP1-3, the eigen TADF of these compounds could be regulated between 588 and 678 nm or turned on/off by different wavelengths of light irradiation in a polyvinylpyrrolidone (PVP) matrix. The emission lifetime of the spiropyran derivative was prolonged to millisecond level for the first time. Moreover, the delayed fluorescence of SP1 and SP3 could also be manipulated by mechanical force because of the mechanochromistic properties of SP1 and SP3. This research is a significant breakthrough for photochromic materials and may broaden its scope. [GRAPHICS]