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Atop adsorption site of sulphur head groups in gold-thiolate self-assembled monolayers
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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 0009-2614
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Official URL: http://dx.doi.org/10.1016/j.cplett.2004.02.109
Abstract
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 |
| ISSN: | 0009-2614 |
| Date: | 1 May 2004 |
| Volume: | 389 |
| Number: | 1-3 |
| Number of Pages: | 5 |
| Page Range: | pp. 87-91 |
| Identification Number: | 10.1016/j.cplett.2004.02.109 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/8465 |
Data sourced from Thomson Reuters' Web of Knowledge
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