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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. doi:10.1016/j.cplett.2004.02.109 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 | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | CHEMICAL PHYSICS LETTERS | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0009-2614 | ||||
Official Date: | 1 May 2004 | ||||
Dates: |
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Volume: | 389 | ||||
Number: | 1-3 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 87-91 | ||||
DOI: | 10.1016/j.cplett.2004.02.109 | ||||
Publication Status: | Published |
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