快速响应聚合物光子晶体研究进展

响应性光子晶体以其亮丽的结构色彩及光学信号对外场刺激的响应性变化,在化学传感、智能显示等领域具有重要的应用前景.本文综述了快速响应聚合物光子晶体的研究进展.首先从原理上阐述了影响溶胀型光子晶体响应速率的因素,系统总结了针对不同因素提高其响应速率的研究工作,着重探讨了溶胀型光子晶体水凝胶的尺寸、聚合物链段的物理化学性能(包括多孔结构和亲疏水性)、凝胶网络的交联度等因素对响应速率的影响.同时也简要介绍了影响非溶胀型响应性光子晶体,如光、电、磁、机械力等外场诱导体系折光指数变化的响应性光子晶体的响应速率的因素.最后展望了响应性光子晶体的热点研究方向.这些工作对于提高光子晶体的响应速率,发展其在实时分析、在线检测等领域的应用具有重要意义.

RESEARCH PROGRESS OF FAST-RESPONSIVE POLYMER PHOTONIC CRYSTALS

Responsive colloidal photonic crystals(PCs) are of great importance for the extended applications in the fields of chemical sensing,smart display and so on,owing to the visible structure color/optic signal change to exterior stimuli.This paper presented the research progress about the improvement of the response rate of swell-responsive polymer PCs,which covered the responsive mechanism and critical influencing factors,including dimension of PC hydrogel,physical structure/chemical properties of polymer chains and crosslinking degree of gel network.In addition,response rate of non-swollen PCs with other response types,such as magnetic,electric,optical or mechanical response were also involved.Understanding the performance of these PCs will be helpful for the development of novel and advanced responsive systems.