Tang Zhehao, Lyu Xiaolin, Luo Longfei, Shen Zhihao, Fan Xing-He
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
ACS Appl Mater Interfaces. 2020 Oct 7;12(40):45420-45428. doi: 10.1021/acsami.0c15656. Epub 2020 Sep 23.
A white-light-emitting ion gel composed of a poly[(2-(4-vinylphenyl)ethene-1,1,2-triyl)tribenzene--ethylene glycol--(2-(4-vinylphenyl)ethene-1,1,2-triyl)tribenzene] aggregation-induced emission (AIE) network and a poly([2,2':6',2″-terpyridin]-4'-yl methacrylate--methyl methacrylate) Eu-doped network was fabricated via a solution mixing process. This ion gel exhibits special multistimuli-responsive properties, and it can change its luminescent color by changing pH, temperature, or the solvent. The unique color-changing property is attributed to the different luminescent mechanisms of the AIE/Eu-doped polymer networks. The former is affected by changes in its aggregation state, while the latter is controlled by the dynamic metal-ligand cross-linking bonds. Furthermore, owing to the interpenetrating networks formed by the two polymers, the hybrid gel has both good mechanical strength and flexibility. It may be used in the fields of sensors, probes, and light-emitting materials.
通过溶液混合工艺制备了一种由聚[（2-（4-乙烯基苯基）乙烯-1,1,2-三基）三苯 - 乙二醇 - （2-（4-乙烯基苯基）乙烯-1,1,2-三基）三苯]聚集诱导发光（AIE）网络和聚（[2,2':6',2″-三联吡啶]-4'-基甲基丙烯酸酯 - 甲基丙烯酸甲酯）铕掺杂网络组成的发白光离子凝胶。该离子凝胶具有特殊的多刺激响应特性，可通过改变pH值、温度或溶剂来改变其发光颜色。这种独特的变色特性归因于AIE/铕掺杂聚合物网络的不同发光机制。前者受其聚集状态变化的影响，而后者由动态金属 - 配体交联键控制。此外，由于两种聚合物形成了互穿网络，该混合凝胶兼具良好的机械强度和柔韧性。它可用于传感器、探针和发光材料等领域。
