纤维素纳米晶基手性光子晶体膜传感材料的研究进展  

Recent advances in cellulose nanocrystals-based chiral photonic crystalfilms for sensing applications

作　　者：邓芷洁 陶涛[1] 万才超 Deng Zhijie;Tao Tao;Wan Caichao(School of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004)

机构地区：[1]中南林业科技大学材料科学与工程学院,长沙410004

出　　处：《化工新型材料》2024年第8期15-21,共7页New Chemical Materials

基　　金：国家自然科学基金(31901249);中国科协青年人才托举工程项目(2019QNRC001);湖南省自然科学基金面上项目(2021JJ31150)。

摘　　要：近年来,纤维素纳米晶由于其独特的光学性能、卓越的生物降解性能和优异的机械性能引起了科研人员极大的兴趣。综述了纤维素纳米晶膜在传感领域应用。首先,介绍了纤维素纳米晶的性质及其制备,纤维素纳米晶悬浮液达到临界浓度时可自组装形成胆甾相液晶;接下来,介绍了纤维素纳米晶膜的性质及其制备,成膜后胆甾相液晶的特殊性能会被保留在薄膜中,使薄膜具有独特的左旋结构和鲜艳美丽的结构色;最后,重点介绍了通过功能修饰的纤维素纳米晶膜具有较好的稳定性、便捷的操作性和优异的可再生性,使其在压力、温度以及水分这3个领域具有广阔的传感应用前景。In recent years,cellulose nanocrystals(CNCs)have attracted considerable interest from researchers due to their unique optical properties,excellent biodegradability and outstanding mechanical properties.Herein,the application of CNCs films in the field of sensing was reviewed.Firstly,we introduced the properties and preparation of CNCs.When the cellulose nanocrystal suspension reached the critical concentration,it could self-assembly organize into a cholesteric liquid crystals.Next,the properties and preparation of cellulose nanocrystal films were described.After film formation,the special properties of the cholesteric liquid crystals could be retained in the films,endowing the resulting materials with a unique helicoidal structure and brilliant structural colors.Finally,we focused on the superior performance of functionally modified CNCs films,such as good stability,convenient operability and excellent renewability,which made them have a wide application prospect in the fields of pressure sensing,temperature sensing and moisture sensing.

关 键 词：纤维素纳米晶 胆甾相液晶 结构色 传感 

分 类 号：TQ352[化学工程]