Isolated polymer chains via mixed self-assembled monolayers: Morphology and friction studied by scanning force microscopy

被引：32

作者：

Koutsos, V

van der Vegte, EW

Grim, PCM

Hadziioannou, G

机构：

[1] Univ Groningen, Dept Polymer Chem, NL-9747 AG Groningen, Netherlands

[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

来源：

MACROMOLECULES | 1998年 / 31卷 / 01期

关键词：

D O I：

10.1021/ma9706182

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, we describe a system of mixed self-assembled monolayers of alkanethiols and thiol-terminated polystyrene (PS-SH) chemisorbed on a gold surface from mixed toluene solutions. Topography and friction images were obtained with a scanning force microscope (SFM) under bad-solvent conditions. We observed randomly distributed single polystyrene coils. We found that the polymer grafting density increases when the molar ratio of polymer to alkanethiol in solution increases. The local friction coefficient on a collapsed polystyrene chain was found to be about 0.3, a value that compares with a macroscopic one of 0.515. X-ray photoelectron spectroscopy and ellipsometry were employed to verify and supplement the SFM measurements.

引用

页码：116 / 123

页数：8

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[31] FUNDAMENTAL-STUDIES OF MICROSCOPIC WETTING ON ORGANIC-SURFACES .1. FORMATION AND STRUCTURAL CHARACTERIZATION OF A SELF-CONSISTENT SERIES OF POLYFUNCTIONAL ORGANIC MONOLAYERS [J].