Affiliation:
1. School of Materials Science and Chemical Engineering, Anhui Institute of Architecture and Industry, Hefei 230022, P. R. China
Abstract
By using established statistical thermodynamic theory of adsorbate-induced surface stress of adsorption monolayer on metal surface, the surface stress Δg in the self-assembly of alkanethiols on Au (111) surface has been calculated. The quantitative relations of the surface stress Δg with the length N of the alkyl chain of the molecule and with the coverage θ of molecules on Au (111) have been theoretically studied, respectively. The calculated results agree with Berger et al.'s experiment. The qualitative discrepancy between the theory and experiment on the sign of the surface stress has been resolved. Among various components of the adsorbate–adsorbate interaction energies in the adlayer, the substrate-mediated interaction is significant for the adsorbate-induced surface stress, which shows that indirect contribution of the adsorption energy of alkanethiols through the substrate-mediated interaction is very important.
Publisher
World Scientific Pub Co Pte Lt
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics
Cited by
1 articles.
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