Xu Dongdong, Yu Huanan, Xu Qun, Xu Guiheng, Wang Kaixi
College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, China.
ACS Appl Mater Interfaces. 2015 Apr 29;7(16):8750-6. doi: 10.1021/acsami.5b01156. Epub 2015 Apr 15.
In this work, we report a simple method to fabricate smart polymers engineered with hierarchical photonic structures of Morpho butterfly wing to present high performance that are capable of color tunability over temperature. The materials were assembled by combining functional temperature responsivity of poly(N-isopropylacrylamide)-co-acrylic acid (PNIPAm-co-AAc) with the biological photonic crystal (PC) structure of Morpho butterfly wing, and then the synergistic effect between the functional polymer and the natural PC structure was created. Their cooperativity is instantiated in the phase transition of PNIPAm-co-AAc (varying with the change of temperature) that can alter the nanostructure of PCs, which further leads to the reversible spectrum response property of the modified hierarchical photonic structures. The cost-effective biomimetic technique presented here highlights the bright prospect of fabrication of more stimuli-responsive functional materials via coassembling smart polymers and biohierarchical structures, and it will be an important platform for the development of nanosmart biomaterials.
在这项工作中，我们报道了一种简单的方法来制备智能聚合物，该聚合物通过对大闪蝶翅膀的分级光子结构进行工程设计，以呈现出具有温度颜色可调性的高性能。这些材料是通过将聚（N-异丙基丙烯酰胺）-共-丙烯酸（PNIPAm-co-AAc）的功能温度响应性与大闪蝶翅膀的生物光子晶体（PC）结构相结合而组装而成的，然后在功能聚合物与天然PC结构之间产生了协同效应。它们的协同作用体现在PNIPAm-co-AAc的相变（随温度变化）中，这种相变可以改变光子晶体的纳米结构，进而导致改性分级光子结构具有可逆光谱响应特性。这里提出的具有成本效益的仿生技术突出了通过将智能聚合物与生物分级结构共组装来制备更多刺激响应性功能材料的光明前景，并且它将成为纳米智能生物材料开发的重要平台。
