Jiang Yu, Ma Jiahui, Ran Ziyu, Zhong Huiqing, Zhang Daohong, Hadjichristidis Nikos
Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, Hubei R&D Center of Hyperbranched Polymers Synthesis and Applications, South-Central Minzu University, Wuhan, 430074, P. R. China.
Polymer Synthesis Laboratory, KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Kingdom of Saudi Arabia.
Angew Chem Int Ed Engl. 2022 Nov 2;61(44):e202208516. doi: 10.1002/anie.202208516. Epub 2022 Sep 29.
A versatile strategy for smart fluorescent materials is lacking due to their diverse responding mechanisms and incompatibility of responsive behaviors. Herein an adaptable strategy is presented toward a multi-stimuli-responsive fluorescent material with stage-by-stage responsive behavior by blending linear polymers modified with different stimulus-responsive moieties and AIE cross-linker. Under stimuli, the linear polymer can cross-link with the cross-linker to form networks, which intrinsically restrict the intramolecular rotation of the AIE molecule to induce strong emission. A unified stimuli-responsive mechanism is involved in that various stimuli are transferred through the organized "stimulus-crosslink-emission" process. This strategy ensures the compatibility of different stimuli-responses and the adjustability of stimulus-response behavioral logic. These multi-stimuli-responsive fluorescent materials exhibited strong accessibility and adaptability for information encryption.
由于智能荧光材料具有多样的响应机制以及响应行为的不兼容性，目前仍缺乏一种通用的策略。在此，我们提出了一种适应性策略，通过将用不同刺激响应基团修饰的线性聚合物与聚集诱导发光（AIE）交联剂混合，制备具有逐步响应行为的多刺激响应荧光材料。在刺激作用下，线性聚合物可与交联剂交联形成网络，从而本质上限制AIE分子的分子内旋转以诱导强烈发光。一个统一的刺激响应机制涉及到各种刺激通过有组织的“刺激-交联-发光”过程进行传递。该策略确保了不同刺激响应的兼容性以及刺激响应行为逻辑的可调节性。这些多刺激响应荧光材料在信息加密方面表现出很强的可及性和适应性。
