Direct observation of sulfur dimers in alkanethiol self-assembled monolayers on Au(111)

Authors
Kluth, GJ Carraro, C Maboudian, R
Citation
Gj. Kluth et al., Direct observation of sulfur dimers in alkanethiol self-assembled monolayers on Au(111), PHYS REV B, 59(16), 1999, pp. R10449-R10452
Citations number
30
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
16
Year of publication
1999
Pages
R10449 - R10452
Database
ISI
SICI code
0163-1829(19990415)59:16<R10449:DOOSDI>2.0.ZU;2-Z
Abstract
High-resolution electron-energy-loss spectra of octadecanethiol self-assemb led monolayers (SAM's) on Au thin films have been obtained after annealing the sample to various temperatures. Annealing to 375 K results in the appea rance of the S-S stretch at 530 cm(-1), a direct observation of sulfur dime rs for alkanethiol SAM's adsorbed on Au. The appearance of dimers following annealing is explained by the presence of an activation barrier to the for mation of gauche defects at the S-C bond. [S0163-1829(99)51016-3].