Citation: Xin De Tang, Long Cheng Gao, Xing He Fan, Qi Feng Zhou. Synthesis and characterization of H-type amphiphilic liquid crystalline block copolymers by ATRP[J]. Chinese Chemical Letters, ;2008, 19(2): 237-240. doi: 10.1016/j.cclet.2007.11.024 shu

Synthesis and characterization of H-type amphiphilic liquid crystalline block copolymers by ATRP

a Institute of New Materials, Shandong Jiaotong University, Ji'nan 250023, China;
b Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

Received Date: 18 September 2007

Fund Project: The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (No. 20134020), the Science Research Fund of the Chinese Ministry of Education (No. 104005), and the Science Research Fund of Shandong Provincial Education Department of China (No. J05D11).

H-type amphiphilic liquid crystalline block copolymers containing azobenzene were synthesized by atom transfer radical polymerization (ATRP).Macroinitiators prepared by the esteriflcation between poly (ethylene oxide)(PEG) and 2, 2-dichloroacetyl chloride were utilized to initiate the polymerization of 6-[4-(4-ethoxyphenylazo) phenoxy]hexyl methacrylate (M6C).The resulting macroinitiators and block copolymers were characterized by ¹H NMR, gel permeation chromatography (GPC).Polarizing optical microscopy (POM) and differential scanning calorimetry (DSC) preliminarily revealed the liquid crystalline property of these block copolymers.This series of liquid crystalline block copolymers are promising in some areas, such as optical data storage, optical switch, and molecular devices.
- H-type,
- Amphiphilic,
- Block copolymer,
- Liquid crystalline property,
- Atom transfer radical polymerization(ATRP)
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