Real-time Imaging of the coil-globule transition of single adsorbed poly (2-vinylpyridine) molecules

被引：23

作者：

Gallyamov, MO ^{[1
]}

Khokhlov, AR

Möller, M

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia

[2] Univ Ulm, D-89069 Ulm, Germany

[3] Rhein Westfal TH Aachen, Inst Tech Chem & Makromol Chem, D-52056 Aachen, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2005年 / 26卷 / 06期

关键词：

atomic force microscopy (AFM); conformational transitions; real-time imaging; single macromolecules; surfaces;

D O I：

10.1002/marc.200400602

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We applied scanning force microscopy to study, in real time, the mobility and reorganisation of single poly(2-vinylpyridine) molecules that were adsorbed on mica and exposed to vapours of ethanol or water. The macromolecules adopted a compact globular conformation in ethanol-saturated vapour and extended to a surface-bound two-dimensional coil in water-saturated vapour. Hence, reversible coil-to-globule conformational transitions of flexible polymer chains were directly visualized with unique molecular resolution.

引用

页码：456 / 460

页数：5

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