Luminescent hydrogels are emerging soft materials with applications in photoelectric, biomedicine, sensors and actuators, which are fabricated via covalently conjugation of luminophors to hydrogelators or physical loading of luminescent organic/inorganic materials into hydrogel matrices. Due to the intrinsic stimulus-responsiveness for hydrogels such as thermo-, pH, ionic strength, light and redox, luminescent hydrogels could respond to external physical or chemical stimuli through varying the luminescent properties such as colors, fluorescent intensity and so on, affording diverse application potential in addition to the pristine individual hydrogels or luminescent materials. Based on the rapid development of such area, here we systematically summarize and discuss the design protocols, properties as well as the applications of stimulus-responsive luminescent hydrogels. Because of the stimuli-responsiveness, biocompatibility, injectable and controllability of luminescent hydrogels, they are widely used as functional smart materials. We illustrate the applications of luminescent hydrogels. The future developments about luminescent hydrogels are also presented.

发光水凝胶是新兴的软材料，可用于光电、生物医学、传感器和执行器，通过发光体与水凝胶剂的共价结合或将发光有机/无机材料物理加载到水凝胶基质中。由于水凝胶对热、pH、离子强度、光和氧化还原等固有的刺激响应性，发光水凝胶可以通过改变颜色、荧光强度等发光特性来响应外部物理或化学刺激，提供多样化除了原始的单个水凝胶或发光材料之外，还有应用潜力。基于该领域的快速发展，我们在此系统地总结和讨论了刺激响应发光水凝胶的设计方案、性能以及应用。由于发光水凝胶的刺激响应性、生物相容性、可注射性和可控性，它们被广泛用作功能性智能材料。我们说明了发光水凝胶的应用。还介绍了发光水凝胶的未来发展。