A poly(acrylic acid)‐based polymer gel exhibiting strong fluorescence and high photoresponsibility is prepared by using a cyanostilbene derivative as a self‐assembling supramolecular crosslinking agent, which generates conceptually new multiple hydrogen bonds in the gel system. This polymer gel in ethanol shows the gel‐to‐sol transition upon UV light irradiation with concomitant fluorescence color and intensity changes, which are attributed to the trans‐to‐cis photoisomerization of the supramolecular crosslinkers. Aggregation‐induced enhanced emission (AIEE) behavior of the trans‐cyanostilbene derivative enables a highly fluorescent polymer gel (Φ_F = 0.68) with green color (λ_em = 541 nm), which can be switched into a blue fluorescent sol (λ_em = 506 nm and Φ_F = 0.12) upon UV irradiation.

中文翻译：

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一种由聚丙烯酸和超分子氰基苯乙烯交联剂组成的高荧光和光响应聚合物凝胶

通过使用氰基苯乙烯衍生物作为自组装的超分子交联剂，可以制备出具有强荧光性和高光响应性的聚丙烯酸聚合物凝胶，它在凝胶体系中产生了概念上新的多个氢键。在乙醇中示出了这种聚合物凝胶在UV光照射并伴随荧光的颜色和强度的变化，这归因于凝胶到溶胶转变反式-到-顺超分子交联剂的光致异构化。的聚集诱导的增强的发射（AIEE）行为反-cyanostilbene衍生物使高荧光聚合物凝胶（Φ _˚F = 0.68）与绿色（λ _EM= 541纳米），其可以切换到蓝色荧光溶胶（λ _EM = 506 nm和Φ _˚F在UV照射= 0.12）。