Smart Luminescent Hydrogel with Superior Mechanical Performance Based on Polymer Networks Embedded with Lanthanide Containing Clay Nanocomposite
Smart Luminescent Hydrogel with Superior Mechanical Performance Based on Polymer Networks Embedded with Lanthanide Containing Clay Nanocomposite
复制标题
基于嵌入含稀土粘土纳米复合材料的聚合物网络的具有优异机械性能的智能发光水凝胶
DOI：
10.1039/d1nr01642c
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发表时间：
2021
期刊：
影响因子：
6.7
通讯作者：
Li Huanrong
中科院分区：
文献类型：
--
作者：
Li Bin;Qin Yan;Li Zhiqiang;Zhang Ying;Li Huanrong
由于其固有的生物相容性和独特的光学特性，发光水凝胶近年来引起了人们的极大兴趣。然而，大多数已开发的发光水凝胶不能很好地满足足够的力学性能和智能发光的要求。在这里，我们报道了一种具有优异机械性能的智能发光水凝胶，它是由丙烯酰胺单体和负载镧系元素的粘土纳米片原位共聚而成的。Eu-DPA@clay纳米片发光中心不仅在水溶液中分散良好，而且保持了较强的发光性能。有趣的是，Eu-DPA@clay纳米片与聚合物网络之间的额外相互作用赋予了水凝胶优异的机械性能。此外，通过替代酸和碱刺激也可以实现发光的开/关开关，这可能在智能发光器件中具有潜在的应用。
Due to their inherent biocompatibility and unique optical properties, luminescent hydrogels have recently garnered tremendous interest. However, most of the explored luminescent hydrogels cannot well meet the requirements of both sufficient mechanical properties and smart luminescence. Here we report a smart luminescent hydrogel with superior mechanical performance by in situ copolymerization of the acrylamide monomers and lanthanide loaded clay nanosheets. The Eu-DPA@clay nanosheets emitting center can not only be well dispersed in aqueous solution, but also maintain robust luminescence. Interestingly, the additional interaction between the Eu-DPA@clay nanosheets and the polymer network endows the hydrogel with excellent mechanical properties. Moreover, a luminescence on/off switch is also achieved by alternative acid and base stimuli, which may have potential applications in smart luminescent devices.