White Light-Emitting Multistimuli-Responsive Hydrogels with Lanthanides and Carbon Dots,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

White Light-Emitting Multistimuli-Responsive Hydrogels with Lanthanides and Carbon Dots
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-02-26 00:00:00 , DOI: 10.1021/acsami.7b17016
Qingdi Zhu ₁ , Lihong Zhang ₂ , Krystyn Van Vliet ₁ , Ali Miserez _{2,

3} , Niels Holten-Andersen

Affiliation

Polymers that confer changes in optical properties in response to chemical or mechanical cues offer diverse sensing applications, particularly if this stimuli response is accessible in humid or aqueous environments. In this study, luminescent hydrogels were fabricated using a facile aqueous process by incorporating lanthanide ions and carbon dots (CD) into a network of polyacrylamide and poly(acrylic acid). White luminescence was obtained by tuning the balance of blue-light-emitting CD to green- and red-light-emitting lanthanide ions. Exploiting the combined specific sensitivities of the different emitters, the luminescent hydrogel showed chromic responsiveness to multiple stimuli, including pH, organic vapors, transition-metal ions, and temperature. The white-light-emitting hydrogel was also stretchable with a fracture strain of 400%. We envision this photoluminescent hydrogel to be a versatile and multifunctional material for chemical and environmental sensing.

中文翻译：

具有镧系元素和碳点的白光多刺激响应水凝胶

响应于化学或机械提示而赋予光学性质变化的聚合物可提供多种传感应用，尤其是在潮湿或水性环境中可达到这种刺激响应的情况下。在这项研究中，通过将镧系元素离子和碳点（CD）掺入聚丙烯酰胺和聚丙烯酸的网络中，使用便捷的水处理工艺制备了发光水凝胶。通过调节发蓝光的CD到发绿光和发红光的镧系元素离子的平衡，获得了白色发光。利用不同发射体的组合特定灵敏度，发光水凝胶对多种刺激（包括pH值，有机蒸气，过渡金属离子和温度）显示出铬响应性。发射白光的水凝胶也可拉伸，断裂应变为400％。

更新日期：2018-02-26

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11