We report herein on remote control over a reversible phase transition of robust luminescent hybrid hydrogels as enabled by the rational selection and incorporation of photoswitches. Azobenzene units functionalized with a guanidinium group were utilized as the photoswitches and incorporated through a host–guest inclusion method involving α‐cyclodextrins functionalized with 2,6‐pyridinedicarboxylic acid (PDA) groups. While the guanidinium functional groups bind to the negatively charged Laponite matrix surface to connect organic and inorganic components, the PDA groups enable simultaneous coordination with different lanthanide metal ions, thus rendering the hydrogel broadly luminescent. Owing to its conformation‐dependent binding behavior with α‐cyclodextrin, the isomerization of azobenzene induced association or dissociation of the inclusion complexes and thus lead to a reversible photocontrolled sol↔gel phase transition of the luminescent hybrid hydrogels.

中文翻译：

---

鲁棒发光杂化水凝胶的可逆相变

我们在此报告了对鲁棒性发光杂化水凝胶的可逆相变的远程控制，这是通过合理选择和引入光开关实现的。利用胍基官能化的偶氮苯单元被用作光开关，并通过包含2，6-吡啶二羧酸（PDA）基团官能化的α-环糊精的主客体包合方法掺入。虽然胍基官能团与带负电的Laponite基质表面结合以连接有机和无机组分，但PDA基团能够与不同的镧系元素金属离子同时配位，从而使水凝胶具有广泛的发光性。由于其与α-环糊精的构象依赖性结合行为，