纤维素纳米晶柔性功能光子材料的制备及应用研究进展

Recent progress in preparation and application of cellulose nanocrystalline flexible functional photonic materials

利用绿色可再生和具有自组装成光子结构能力的纤维素纳米晶体(CNCs)构筑柔性功能材料可提供丰富直观的可视化信息、降低成本并减少不可降解材料的危害。但是由于体系内缺乏有效的软能耗相,基于CNCs的光子材料具有机械易碎和缺乏动态光学响应等不足,为其功能性拓展应用带来了一定的挑战。因此,根据CNCs的结构特点,详细介绍了目前CNCs光子膜的制备方法及其影响因素,进而对目前CNCs光子膜从机械刚性到机械柔性和机色响应性的各种合成调控策略进行了总结。同时,还着重强调了CNCs柔性功能光子材料的各种有前景的应用方向以及未来面临的挑战。

The use of green renewable cellulose nanocrystals(CNCs)with the ability to self-assemble photonic structures to construct flexible functional materials can provide rich visual information,reduce the cost and reduce the harm of non-degradable materials.However,due to the lack of effective soft energy consumption phase in the system,the photonic materials based on CNCs have shortcomings such as mechanical fragility and lack of dynamic optical response,which bring certain challenges to their functional expansion and application.Thus,according to the structural characteristics of CNCs,this paper introduces in detail the preparation methods and influencing factors of the current CNCs photonic membrane,and then summarizes the various synthesis and regulation strategies of the current CNCs photonic membrane from mechanical rigidity to mechanical flexibility and machine color responsiveness.At the same time,the promising application directions and future challenges of CNCs flexible functional photonic materials are emphasized in this paper.