Single molecule rod-globule phase transition for brush molecules at a flat interface

被引:188
作者
Sheiko, SS
Prokhorova, SA
Beers, KL
Matyjaszewski, K
Potemkin, II
Khokhlov, AR
Möller, M
机构
[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA
[2] Univ Ulm, D-89069 Ulm, Germany
[3] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA
[4] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 117234, Russia
关键词
D O I
10.1021/ma010746x
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 coexistence of two different conformational states in one molecule has been visualized by scanning force microscopy for a rod-globule transition of brush molecules adsorbed on a water surface. The transition, which occurred upon lateral compression of monolayers, was also examined theoretically by scaling analysis that proved its first-order character. The transition becomes less distinct with decreasing length of the side chains and finally vanishes below a certain critical value.
引用
收藏
页码:8354 / 8360
页数:7
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