Multistate circularly polarized luminescence switches based on dual stimuli-responsive chiral[2]rotaxanes  

作　　者：Wei-Tao Xu Xue Li Xiao-Qin Xu Xu-Qing Wang Hai-Bo Yang Wei Wang 

机构地区：[1]Wuhu Hospital,East China Normal University(The Second People’s Hospital,Wuhu),Wuhu 241001,China [2]Shanghai Key Laboratory of Green Chemistry and Chemical Processes,State Key Laboratory of Petroleum Molecular and Process Engineering,School of Chemistry and Molecular Engineering,East China Normal University,Shanghai 200062,China [3]Shanghai Center of Brain-inspired Intelligent Materials and Devices,East China Normal University,Shanghai 200241,China

出　　处：《Science China Chemistry》2024年第12期4202-4211,共10页中国科学（化学英文版）

基　　金：financial support sponsored by the National Natural Science Foundation of China(92356307);financial support sponsored by the National Natural Science Foundation of China(92056203);financial support sponsored by the National Natural Science Foundation of China(22201077);Shanghai Pilot Program for Basic Research(TQ20240205);Natural Science Foundation of Shanghai(23ZR1419600);Science and Technology Commission of Shanghai Municipality(21520710200);the National Key R&D Program of China(2021YFA1501600)。

摘　　要：Aiming at the construction of novel multistate circularly polarized luminescence(CPL)switches,dual stimuli-responsive chiral[2]rotaxanes towards anions and light have been designed and constructed.Through the light-controlled on/off F?rster resonance energy transfer(FRET)switching between the emissive stoppers and anion-induced controllable motions of the chiral wheel for the precise regulations of chirality information transfer from the chiral wheel to the emissive stoppers,precisely switching between four CPL emission states with varied emission wavelengths and dissymmetry factors has been successfully realized,making them a promising platform for practical uses such as information storage and encryption.This proof-of-concept study not only provides a novel design strategy for multistate CPL switching but also contributes excellent candidates for the construction of novel smart chiral luminescent materials.

关 键 词：mechanically interlocked molecules Förster resonance energy transfer aggregation-induced emission arene SPIROPYRAN 

分 类 号：TB34[一般工业技术—材料科学与工程]