Determination of thickness, dielectric constant of thiol films, and kinetics of adsorption using surface plasmon resonance

被引：113

作者：

Damos, FS ^{[1
]}

Luz, RCS ^{[1
]}

Kubota, LT ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Chem, BR-13084971 Campinas, SP, Brazil

来源：

LANGMUIR | 2005年 / 21卷 / 02期

关键词：

D O I：

10.1021/la0487038

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper describes the formation of a self-assembled monolayer of 11-mercaptoundecanoic acid (MUA) under different concentrations on a gold sensor disk, monitoring in situ and in real time using surface plasmon resonance spectroscopy (SPR). The film thickness and dielectric constant were determined for a fully formed monolayer using one-color approach SPR. The kinetic studies of the film formation in ethanol solution indicated that the self-assembled monolayer is formed in a two-step adsorption process. In this sense, this unpublished route was applied on the basis of a model where many molecules are adsorbed at an initial step and then can be desorbed and/or rearranged to form a perfect monolayer.

引用

页码：602 / 609

页数：8

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