纳米晶纤维素手性向列型液晶相结构的形成、调控及应用  

Formation,Tuning and Application of Chiral Nematic Liquid Crystal Phase Based on Nanocrystalline Cellulose

作　　者：代林林[1] 李伟[1,2] 曹军[2] 李坚[1] 刘守新[1] 

机构地区：[1]东北林业大学材料科学与工程学院,哈尔滨150040 [2]东北林业大学机电工程学院,哈尔滨150040

出　　处：《化学进展》2015年第7期861-869,共9页Progress in Chemistry

基　　金：国家自然科学基金项目(No.31170545);中央高校基本科研业务费专项资金项目(No.2572014EB01);中国博士后科学基金项目(No.2014M561313)资助~~

摘　　要：手性材料作为一种新型功能材料,尤其是其特殊的光学性能以及在传感器、对映体分离领域的潜在应用,已经引起众多科学研究者的广泛关注。纳米晶纤维素(NCC)基手性材料以其丰富的来源、简单的合成工艺、独特的光学性质以及良好的稳定性等成为当前手性材料研究的热点。本文综述了NCC及其手性向列型液晶相的形成机制,重点介绍了NCC手性结构的调控方法,包括NCC性质、环境条件以及添加剂对其手性结构的影响。最后,总结了近几年NCC手性结构在光电材料和模板剂方面的应用研究进展。Chiral nematic liquid crystals, w hich consist of mesogens organized into a long-range helical assembly,exhibit unique properties, such as the selective reflection of circularly polarized light. The incorporation of chiral nematic organization into solid-state materials could give rise to novel properties. Chiral assembled materials have received increasing attention in many research areas as new functional composite materials, especially focusing on their potential application in sensors and enantiomeric resolution.Nanocrystalline cellulose（ NCC） is a kind of rod-like nanomaterial obtained from inexpensive renew able biomass,w hich organizes into a chiral nematic liquid crystal phase via self-assembly in certain circumstance.Taking advantage of the chiral nematic order and nanoscale of the NCC templates,new functional materials can be prepared. Chiral assembled materials based on NCC represent a major branch of future research because of their abundance,simple synthesis and other novel properties. In this paper,the formation,tuning and application of NCC chiral nematic structure are review ed,especially for the tuning method w hich included the effect of NCC properties,circumstance,additives. Recent efforts to use NCC chiral nematic structure for application in optical and electronic materials and template are also summarized. The examples covered in this account demonstrate that there is a rich diversity of composite materials accessible using NCC templating.

关 键 词：纳米晶纤维素 手性向列 自组装 液晶 光电材料 

分 类 号：O636.11[理学—高分子化学]