Wang Guan, Yu Hao, Yang Liming, He Zhentao, Zhou Liangyu, Sun Jiangman, Gu Xinggui, Yang Wantai, Tang Ben Zhong
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
Shenzhen Institute of Molecular Aggregate Science and Engineering, School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen, 518172, China.
Angew Chem Int Ed Engl. 2021 Nov 22;60(48):25246-25251. doi: 10.1002/anie.202110180. Epub 2021 Oct 22.
White-light emitting polymers (WLEPs) based on aggregation microenvironment-sensitive aggregation-induced emission (AIE) and Förster resonance energy transfer (FRET) have aroused great interest in lighting and optoelectronic devices. Herein, we developed a novel strategy to construct WLEP particles via a stepwise self-stabilized precipitation polymerization of two emission-complementary AIEgens under core-shell engineering, where the AIE characteristics and FRET process of core-shell fluorescent polymeric particles (CS-FPPs) could be modulated by altering aggregation microenvironment under swelling and shrinking of polymers, facilitating the tunable white light emission of CS-FPPs. Furthermore, such tuning could be fast realized in the solid state, thus demonstrating the potential in anti-counterfeiting. This work proved the significance of aggregation microenvironment on emission of luminogens, guiding the development of high-efficiency emission-tunable materials.
基于聚集微环境敏感的聚集诱导发光（AIE）和荧光共振能量转移（FRET）的白色发光聚合物（WLEP）在照明和光电器件领域引起了极大的关注。在此，我们开发了一种新颖的策略，通过在核壳工程下对两种发射互补的AIEgens进行逐步自稳定沉淀聚合来构建WLEP颗粒，其中核壳荧光聚合物颗粒（CS-FPPs）的AIE特性和FRET过程可以通过改变聚合物溶胀和收缩时的聚集微环境来调节，从而实现CS-FPPs的可调白光发射。此外，这种调节可以在固态下快速实现，从而证明了其在防伪方面的潜力。这项工作证明了聚集微环境对发光体发射的重要性，为高效发射可调材料的开发提供了指导。
