Synthesis, chiroptical properties of a helical polyacetylene derivative carrying urea moieties

被引：3

作者：

Liu, Rui-yuan ^{[1
]}

Zhang, Tong ^{[2
]}

Yang, Xiao-dong ^{[2
]}

Yan, Yi-chen ^{[1
]}

Qu, Jin-qing ^{[2
]}

机构：

[1] Southern Med Univ, Sch Pharmaceut Sci, Guangzhou 510515, Guangdong, Peoples R China

[2] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

CHINESE JOURNAL OF POLYMER SCIENCE | 2014年 / 32卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Anion; Helix; Hydrogen bonding; Polyacetylene; Urea group; PENDANT TERMINAL GROUPS; SUBSTITUTED POLYACETYLENES; CHAIN HELICITY; GLUTAMIC-ACID; AMINO-ACIDS; SIDE-CHAINS; POLY(PHENYLACETYLENE)S; HYDROGEN; POLY(N-PROPARGYLAMIDES); TRANSFORMATION;

D O I：

10.1007/s10118-014-1468-z

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel phenylacetylene derivative containing urea groups was synthesized and polymerized with a Rh catalyst to give the corresponding polymer, poly(1) with moderate number-average molecular weights. The poly(1) was soluble in toluene, CHCl3, CH2Cl2, THF, DMF, and DMSO, but insoluble in hexane, diethyl ether and MeOH. The specific rotation and circular dichroism (CD) spectroscopic studies revealed that poly(1) took predominantly one-handed helical structures. The presence of intramolecular hydrogen bonding was confirmed by liquid-state IR spectroscopy. The helicity of poly(1) could be tuned by temperature and anion. The helical conformation of the polymer was stable against Br- but susceptible to F-.

引用

页码：931 / 940

页数：10

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