文献类型：期刊文献

英文题名：Dynamic Timing Control over Multicolor Molecular Emission by Temporal Chemical Locking

作者：Zong, Zezhou[1];Zhang, Qi[1];Qiu, Shu-Hai[1];Wang, Qian[1];Zhao, Chengxi[1];Zhao, Cai-Xin[1];Tian, He[1];Qu, Da-Hui[1]

机构：[1]East China Univ Sci & Technol, Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat & Feringa Nobel Prize Scientist, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：13

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20220711643342);WOS:【SCI-EXPANDED(收录号:WOS:000753669400001)】；

基金：This work was supported by National Natural Science Foundation of China (grants 21788102, 22025503, 21790361, 21871084), Shanghai Municipal Science and Technology Major Project (Grant 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant B16017), Program of Shanghai Academic/Technology Research Leader (19XD1421100), Science and Technology Commission of Shanghai Municipality (21JC1401700) and the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant SN-ZJUSIAS-006). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the material characterization.

语种：英文

外文关键词：Dynamic Chemistry; Fluorescence; Macrocycles; Multi-Color Emission

摘要：Dynamic control over molecular emission, especially in a time-dependent manner, holds great promise for the development of smart luminescent materials. Here we report a series of dynamic multicolor fluorescent systems based on the time-encoded locking and unlocking of individual vibrational emissive units. The intramolecular cyclization reaction driven by adding chemical fuel acts as a chemical lock to decrease the conformational freedom of the emissive units, thus varying the fluorescence wavelength, while the resulting chemically locked state can be automatically unlocked by the hydrolysis reaction with water molecules. The dynamic molecular system can be driven by adding chemical fuels for multiple times. The emission wavelength and lifetime of the locking states can be readily controlled by elaborating the molecular structures, indicating this strategy as a robust and versatile way to modulate multi-color molecular emission in a time-encoded manner.