Atop adsorption site of sulphur head groups in gold-thiolate self-assembled monolayers
UNSPECIFIED. (2004) Atop adsorption site of sulphur head groups in gold-thiolate self-assembled monolayers. CHEMICAL PHYSICS LETTERS, 389 (1-3). pp. 87-91. ISSN 0009-2614Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.cplett.2004.02.109
Using normal incidence X-ray standing wave (NIXSW) analysis, we show that the sulphur head group occupies the atop site for methyl-, butyl- and octyl-thiolates on Au(111), with a Au-S distance of 2.50 +/- 0.05 Angstrom, and not the hollow or bridging sites favoured by theoretical calculations. Based on the results of recent theoretical calculations and NIXSW experiments for decyl-thiolate (C10H21 S-), it is argued that thiolates may reconstruct the An surface in such a way as to create a structure in which the increasing intermolecular interactions with increasing chain length may lead to head group displacements away from atop sites. (C) 2004 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry
Q Science > QC Physics
|Journal or Publication Title:||CHEMICAL PHYSICS LETTERS|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||1 May 2004|
|Number of Pages:||5|
|Page Range:||pp. 87-91|
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