The interface structure of n-alkylthiolate self-assembled monolayers on coinage metal surfaces
- 23 October 2008
- journal article
- perspective
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 10 (48) , 7211-7221
Abstract
The current state of understanding of the structure of the metal/thiolate interface of n-alkylthiolate ‘self-assembled monolayers’ (SAMs) on Cu(111), Ag(111) and Au(111) is reviewed. On Cu(111) and Ag(111) there is now clear evidence that adsorbate-induced reconstruction of the outermost metal layer occurs to a less atomically-dense structure, with the S head-group atom bonded to four-fold and three-fold coordinated hollow sites, respectively, and that intermolecular interaction plays some role in the periodicity of the resulting SAMs. On the far more heavily-studied Au(111) surface, the detailed interface structure remains controversial, but there is growing evidence for the role of Au-adatom-thiolate moieties in the layer ordering.Keywords
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