Helix-sense-selective polymerization of achiral substituted acetylene in chiral micelles for preparing optically active polymer nanoparticles: Effects of chiral emulsifiers

被引：19

作者：

Liu, Dong ^{[1
]}

Li, Yan ^{[1
]}

Deng, Jianping ^{[1
]}

Yang, Wantai ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Coll Mat Sci & Engn, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

POLYMER | 2014年 / 55卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Chiral emulsifiers; Chiral micelles; Helix-sense-selective polymerization; COORDINATION POLYMERIZATION; PHENYLACETYLENE MONOMERS; RADICAL POLYMERIZATION; CONJUGATED POLYMERS; CATALYTIC-SYSTEM; POLYACETYLENES; CARBODIIMIDES; AMPLIFICATION; CONFORMATION; RECOGNITION;

D O I：

10.1016/j.polymer.2013.12.050

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This paper reports helix-sense-selective polymerizations (HSSPs) of achiral acetylene monomer performed in chiral micelles, by which optically active helical polymer emulsions were directly obtained. The chiral micelles were constructed by chiral emulsifiers, in which achiral acetylene underwent HSSPs in the presence of catalyst [(nbd)RhCl](2). The chiral emulsifiers possessed different alkyl chain lengths and different amino acid groups, and their effects on HSSPs were investigated in detail. The obtained polymer emulsions were characterized by TEM, circular dichroism and UV-vis absorption spectroscopy techniques. It is demonstrated that the polymer chains constructing the emulsions adopted helical structures of predominantly one-handed screw sense, from which the emulsions exhibited remarkable optical activity. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：840 / 847

页数：8

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