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学科主题: 高分子化学
题名: Self-assembly of amphiphilic liquid crystal block copolymers containing a cholesteryl mesogen: Effects of block ratio and solvent
其他题名: 两亲性胆固醇液晶嵌端共聚物的自组装: 嵌段比例和溶剂的研究
作者: Jia L(贾林) ; Albouy, Pierre-Antoine ; Di Cicco, Aurelie ; Cao AM(曹阿民) ; Li MH(李敏慧)
通讯作者: 曹阿民 ; 李敏慧
刊名: Polymer
发表日期: 2011
卷: 52, 期:12, 页:2565-2575
收录类别: SCI
部门归属: 法国国家科研中心居里研究所; 中科院上海有机化学研究所; 法国巴黎十一大学
英文摘要: We report on the self-assembly, in water and in bulk, of amphiphilic liquid crystal block copolymers consisting of a cholesterol-based smectic LC polymer block (PAChol) and poly(ethylene glycol) (PEG) block. Two series of block copolymers. PEG(45)-b-PAChol and PEG(114)-b-PAChol (45 and 114 are the degree of polymerization of PEG blocks) with different hydrophilic/hydrophobic weight ratios were synthesized and characterized in detail. Depending on the diblock composition, smectic polymer vesicles and/or nanofibers were formed by adding water into a dilute solution of copolymers in dioxane. If THF is used instead of dioxane as solvent, solid spherical aggregates were obtained upon water addition for PEG(45)-b-PAChol series, while macroscopic precipitation occurred for PEG(114)-b-PAChol series. The mesomorphic and microphase segregation structures of the block copolymers in bulk were studied by X-ray scattering, DSC and POM. The interdigital smectic A (SmA(d)) phase with a lamellar period of 4.25 nm was detected in all block copolymers. For PEG(114)-b-PAChol(5) (PEG/PAChol weight ratio = 66/34) and PEG(114)-b-PAChol(12) (45/55), lamellar type of microphase segregation was observed. (C) 2011 Elsevier Ltd. All rights reserved.
语种: 英语
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WOS记录号: WOS:000291133400015
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/22962
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Jia L,Albouy, Pierre-Antoine,Di Cicco, Aurelie,et al. Self-assembly of amphiphilic liquid crystal block copolymers containing a cholesteryl mesogen: Effects of block ratio and solvent[J]. Polymer,2011,52(12):2565-2575.
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