Bio-inspired shape-memory structural color hydrogel film  

仿生的形状记忆结构色水凝胶薄膜

作　　者：Yu Wang Zhuohao Zhang Hanxu Chen Han Zhang Hui Zhang Yuanjin Zhao 汪雨;张倬豪;陈涵旭;张涵;张慧;赵远锦(Department of Clinical Laboratory,Institute of Translational Medicine,The Affiliated Drum Tower Hospital of Nanjing University Medical School,Nanjing 210008,China;State Key Laboratory of Bioelectronics,School of Biological Science and Medical Engineering,Southeast University,Nanjing 210096,China;Chemistry and Biomedicine Innovation Center,Nanjing University,Nanjing 210023,China)

机构地区：[1]Department of Clinical Laboratory,Institute of Translational Medicine,The Affiliated Drum Tower Hospital of Nanjing University Medical School,Nanjing 210008,China [2]State Key Laboratory of Bioelectronics,School of Biological Science and Medical Engineering,Southeast University,Nanjing 210096,China [3]Chemistry and Biomedicine Innovation Center,Nanjing University,Nanjing 210023,China

出　　处：《Science Bulletin》2022年第5期512-519,M0004,共9页科学通报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2020YFA0908200);the National Natural Science Foundation of China(52073060 and 61927805);the Shenzhen Fundamental Research Program(JCYJ20190813152616459);the Project funded by China Postdoctoral Science Foundation。

摘　　要：Structural colors,derived from existing natural creatures,have aroused widespread attention in the materials regulation for different applications.Here,inspired by the color adjusting mechanism of hummingbird,we present a novel shape-memory structural color hydrogel film by introducing shape memory polymers(SMPs)into synthetic inverse opal scaffold structure.The excellent flexibility as well as the inverse opal structure of the hydrogel films imparts them with stable stretchability and brilliant structural colors.Benefiting from the transient structural anisotropy of copolymers,the hybrid films are possessed with shape-morphing behaviors capability.Based on the shape transformations and color responsiveness performance,we have demonstrated diverse structural color actuators with complex shapes for different tasks.Notably,as the photothermal responsive graphene quantum dots were integrated into the hydrogel,the hybrid films could also be endowed with the feature of light-controlled reversible deformation with synchronous structural color variation.These features demonstrate that the presented shape-memory structural color hydrogel film is valuable for soft robotics with multifunctions of sensing,communication and disguise.受蜂鸟颜色调节机制的启发,通过将N-异丙基丙烯酸胺(NIPAM)和硬脂基丙烯酸酯(SA)共聚物引入到反蛋白石支架中,本文提出了一种新型的形状记忆结构色水凝胶薄膜.共聚物水凝胶优异的柔韧性和反蛋白石结构的存在,赋予了薄膜稳定的拉伸性和鲜艳的结构色.同时,共聚物的瞬态结构各向异性使得薄膜具有形状记忆的性能.利用其形状记忆和结构色响应性能,可以设计各种具有复杂形状的不同结构色的执行器.值得一提的是,具有光热响应的石墨烯量子点可以集成到水凝胶薄膜中,使其具有光控可逆变形和同步结构色变化的特性.本文提出的形状记忆结构色水凝胶薄膜在传感、通信和软机器人伪装方面都展现了巨大的应用潜力.

关 键 词：BIO-INSPIRED Structural color SHAPE-MEMORY HYDROGEL RESPONSIVE 

分 类 号：TQ427.26[化学工程] TB383.2[一般工业技术—材料科学与工程]