文献类型：期刊文献

英文题名：Photo-controlled order-to-order host-guest self-assembly transfer for an afterglow effect with water resistance

作者：Liu, Mouwei[1];Wu, Bin[1];Baryshnikov, Glib V.[2];Shen, Shen[1];Sun, Hao[1];Gu, Xinyan[1];Agren, Hans[3];Xu, Yifei[1];Zou, Qi[4];Qu, Da-Hui[4];Zhu, Liangliang[1]

机构：[1]Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China;[2]Linkoping Univ, Lab Organ Elect, Dept Sci & Technol, S-60174 Norrkoping, Sweden;[3]Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden;[4]East China Univ Sci & Technol, Key Lab Adv Mat & Feringa Nobel Prize Scientist Jo, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：15

期号：31

起止页码：12569

外文期刊名：CHEMICAL SCIENCE

收录：;EI(收录号：20242816688834);WOS:【SCI-EXPANDED(收录号:WOS:001264496600001)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC, Grant No. 22275038, 22205038 and 22175064).

语种：英文

外文关键词：Crystallinity - Excited states - Nanostructures - Photoexcitation - Polyvinyl alcohols - Semiconductor doping

摘要：Due to the general incompleteness of photochemical reactions, the photostationary structure in traditional photo-controlled host-guest self-assembly transfer is usually disordered or irregular. This fact readily affects the photoregulation or improvement of related material properties. Herein, a photoexcitation-induced aggregation molecule, hydroxyl hexa(thioaryl)benzene (HB), was grafted into beta-cyclodextrin to form a host-guest system. Upon irradiation, the excited state conformational change of HB can drive an order-to-order phase transition of the system, enabling the transfer of the initial linear nanostructure to a photostationary worm-like nanostructure with orderliness and crystallinity capability. Along with the photoexcitation-controlled phase transition, an afterglow effect was obtained from the films prepared by doping the host-guest system into poly(vinyl alcohol). The afterglow effect had a superior water resistance, which successfully overcame the general sensitivity of doped materials with the afterglow effect to water vapor. These results are expected to provide new insights for pushing forward chemical self-assembly from the light perspective, towards materials with superior and stable properties under light treatment. An order-to-order phase transition of a host-guest system was achieved via photoexcitation-induced molecular conformational change.