文献类型：期刊文献

英文题名：Controlling molecular assembly on time scale: Time-dependent multicolor fluorescence for information encryption

作者：Zou, Zixi[1];Wang, Jingyuan[1];Sun, Yian[1];Wang, Qian[1];Qu, Da -Hui[1]

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

年份：2024

卷号：35

期号：7

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001230299700001)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 22220102004, 22025503), Shanghai Municipal Science and Technology Major Project (No. 2018SHZDZX03), the Innovation Program of Shanghai Municipal Education Commission (No. 2023ZKZD40) , the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (No. B16017) , Science and Technology Commission of Shanghai Municipality (No. 21JC1401700) , and the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (No. SN-ZJU-SIAS-006) .

语种：英文

外文关键词：Supramolecular chemistry; Multicolor fluorescence; White light emission; Time -dependent fluorescence; Information encryption

摘要：Dynamic assembly on time scale is common in biological systems but rare for artificial materials, especially for smart luminescent materials. Programming molecular assembly in a spatio-temporal manner and resulting in white-light-including multicolor fluorescence with time-dynamic features remains challenging. Herein, controlling molecular assembly on time scale is achieved by integrating a pH-responsive motif to a transient alkaline solution which is fabricated by activators (NaOH) and deactivators (esters), leading to automatic assembly on time scale and time-dependent multicolor fluorescence changing from blue to white and yellow. The kinetics of the assembly process is dependent on the ester hydrolysis process, which can be controlled by varying ester concentrations, temperature, initial pH, stirring rate and ester structures. This dynamic fluorescent system can be further developed for intelligent fluorescent materials such as fluorescent ink, three-dimension (3D) codes and even four-dimension (4D) codes, exhibiting a promising potential for information encryption. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.