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Au adatoms in self-assembly of benzenethiol on the Au(111) surface.
- Source :
-
Journal of the American Chemical Society [J Am Chem Soc] 2008 Jun 18; Vol. 130 (24), pp. 7518-9. Date of Electronic Publication: 2008 May 21. - Publication Year :
- 2008
-
Abstract
- Self-assembly of benzenethiol at low coverage on Au(111) was studied using low-temperature scanning tunneling microscopy. Phenylthiolate species (PhS), formed by thermal dehydrogenation of the parent PhSH molecule, was found to self-assemble into surface-bonded complexes with gold adatoms. Each complex involves two PhS species and one gold adatom. The PhS species form either cis- or trans-geometry relative to each other. At a higher coverage, the complexes coalesce, most likely due to the formation of weak C-H...S hydrogen bonds facilitated by the spatial arrangement of the PhS groups. Our findings thus establish that the self-assembly of arenethiols on the Au(111) surface is driven by gold adatom chemistry, which has recently been found to be the key ingredient in the self-assembly of alkanethiols on gold.
Details
- Language :
- English
- ISSN :
- 1520-5126
- Volume :
- 130
- Issue :
- 24
- Database :
- MEDLINE
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 18491902
- Full Text :
- https://doi.org/10.1021/ja800577w