Tunable Phase Structure of Side-chain Liquid Crystalline Polymers Enabled by Molecular Engineering of Dual Mesogenic Cores  

作　　者：Wen-Huan Yao Lan-Sheng Liu Jie Zhao Yan-Xia Wang An-Zhi Ma Zheng-Rui Ma Lan-Ying Zhang Ruo-Chen Lan 

机构地区：[1]College of Chemistry and Chemical Engineering,Hunan University,Changsha,410082,China [2]Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education,Key Laboratory of Eco-Environmental Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou,730070,China [3]Department of Materials Science and Engineering,College of Engineering,Peking University,Beijing,100871,China [4]Institute of Advanced Materials&Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education,College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang,330022,China

出　　处：《Chinese Journal of Polymer Science》2024年第10期1459-1469,I0009,共12页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52263033 and 52202081);China Postdoctoral Science Foundation Funded Project(No.2021M690954);Natural Science Foundation of Gansu Province(No.20JR10RA105);the Natural Science Foundation of Hunan Province(No.2022JJ30152);the graduate research funding project of Northwest Normal University(No.2023KYZZ-S157);Natural Science Foundation of Jiangxi Province,China(No.20232BAB204030)。

摘　　要：A series of novel side-chain liquid crystalline(SCLC)copolymers were synthesized by attaching two distinct mesogenic units,namely a chiral cholesteryl-based monomer(M1)and an achiral biphenyl-based monomer(M2),to a poly(3-mercaptopropylmethylsiloxane)(PMMS)backbone via thiol-ene click chemistry.The influence of side chain composition on the self-assembly behavior and phase structures of these SCLC copolymers was systematically investigated using different instrument.Results indicate that three distinct liquid crystalline phases and four unique molecular configurations were identified within the polymer series,with the emergence of the liquid crystalline phase being a synergistic outcome of the two distinct side chains.This study underscores the critical influence of side chain dimensions,rigidity,and spatial volume on the self-assembly structures and phase characteristics of liquid crystalline polymers,providing valuable insights for the rational design and development of advanced functional materials with tailored properties.

关 键 词：Liquid crystalline copolymers SELF-ASSEMBLY Phase structure Chiral molar ratio 

分 类 号：TQ317[化学工程—高聚物工业]