Surfactant-induced helix formation of cylindrical brush polymers with poly(L-lysine) side chains

被引：34

作者：

Gunari, Nikhil ^{[1
]}

Cong, Yang ^{[1
]}

Zhang, Bin ^{[1
]}

Fischer, Karl ^{[1
]}

Janshoff, Andreas ^{[1
]}

Schmidt, Manfred ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55128 Mainz, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 10期

关键词：

atomic force microscopy; cylindrical brush polymers; cylinder-helix transition; graft copolymers; polypeptide-surfactant complexes;

D O I：

10.1002/marc.200800169

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The complex formation of oppositely charged surfactants with some polypeptides is known to induce beta-sheet or helix formation. Here, we report on the complex formation of cylindrical brush polymers with poly(L-lysine) side chains and sodium dodecylsulfate (SDS). With increasing amount of added surfactant the cylindrical polymers first adopt a helical conformation with a pitch of approximately 14-24 nm followed by a sherically collapsed structure before eventually precipitation occurs. CD measurements suggest that the helix formation of the cylindrical brush polymers is driven by the hydrophobicity of the beta-sheets formed by the PLL side chain-SDS complexes.

引用

页码：821 / 825

页数：5

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