Lu Tao, Zhu Shenmin, Ma Jun, Lin Jinyou, Wang Wanlin, Pan Hui, Tian Feng, Zhang Wang, Zhang Di
State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
Department of Engineering, University of South Australia, Mawson Lakes, SA5095, Australia.
Macromol Rapid Commun. 2015 Oct;36(19):1722-8. doi: 10.1002/marc.201500246. Epub 2015 Jul 14.
Thermoresponsive photonic materials having hierarchical structures are created by combining a template of Morpho butterfly wings with poly(N-isopropylacrylamide) (PNIPAM) through a chemical bonding and polymerization route. These materials show temperature-induced color tunability. Through reacting with both NIPAM monomers and the amino groups of chitosan in wing scales, glutaraldehyde workes as a bridge by creating chemical bonding between the biotemplate and the PNIPAM. The corresponding reflection peaks red-shift with increase in temperature-an opposite phenomenon to previous studies, demonstrating a thermoresponsive photonic property. This unique phenomenon is caused by the refractive index change due to the volume change of PNIPAM during the temperature rising. This work sets up an efficient strategy for the fabrication of stimuli-responsive photonic materials with hierarchical structures toward extensive applications in science and technology.
通过化学键合和聚合途径，将大闪蝶翅膀模板与聚（N-异丙基丙烯酰胺）（PNIPAM）相结合，制备出具有分级结构的热响应光子材料。这些材料表现出温度诱导的颜色可调性。戊二醛通过在生物模板和PNIPAM之间形成化学键，作为桥梁与NIPAM单体和翅鳞中的壳聚糖氨基发生反应。相应的反射峰随温度升高而红移，这与之前的研究相反，证明了其热响应光子特性。这种独特现象是由于温度升高时PNIPAM体积变化导致折射率改变引起的。这项工作为制备具有分级结构的刺激响应光子材料建立了一种有效策略，以广泛应用于科学技术领域。
