Polymer Adhesion at the Solid-Liquid Interface Probed by a Single-Molecule Force Sensor

被引：31
作者：
Geisler, Michael
Balzer, Bizan N.
Hugel, Thorsten [1 ]
机构：
[1] Tech Univ Munich, Dept Phys, IMETUM, CeNS, D-85748 Garching, Germany
来源：
SMALL | 2009年 / 5卷 / 24期
关键词：
biocompatible materials; molecular devices; single-molecule spectroscopy; solvent effects; surface modification; SPIDER SILK PROTEINS; POLYELECTROLYTE CHAIN; CHARGED SURFACE; ADSORPTION; SPECTROSCOPY; DIAMOND; DESORPTION; PROLIFERATION; ENERGETICS; MECHANISM;
D O I：
10.1002/smll.200901237
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A method based on atomic force microscopy is used to delineate the properties that determine single-molecule adhesion onto solid substrates it? aqueous environment Hydrophobicity as well as electrical properties of the substrate and the polymer are varied. In addition, the influence of the solvent composition, in particular the effect of ions, on the molecular adhesion at the solid-liquid interface is studied. Surprisingly, the polymer and surface-related properties account for only small changes in adhesion force, while dissolved ions show a much larger effect. These results point towards the energy of solvation as the most important contribution to adhesion for a wide variety of polymers and substrate materials.
引用
收藏
页码：2864 / 2869
页数：6
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