Dimerization Process in Alkanethiol Self-Assembled Monolayer on Au(111)
- 1 June 1996
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 35 (6B) , L799
- https://doi.org/10.1143/jjap.35.l799
Abstract
Desorption kinetics of alkanethiol self-assembled monolayer (SAM) on an Au(111) surface is studied by thermal desorption spectroscopy (TDS) using a quadrupole mass spectrometer. TDS reveals for the first time that SAM desorbs to form a dimer, dialkyl disulfide molecule from the Au surface with a desorption activation energy of 32 kcal/mol. This result suggests that there exists a dimerization process of SAM molecules on the Au surface, which has been predicted by Fenter et al.. [Science 266 (1994) 1216] through diffraction studies.Keywords
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