A grazing incidence surface X-ray absorption fine structure (GIXAFS) study of alkanethiols adsorbed on Au, Ag, and Cu

被引：41
作者：
Floriano, PN
Schlieben, O
Doomes, EE
Klein, I
Janssen, J
Hormes, J
Poliakoff, ED
McCarley, RL [1 ]
机构：
[1] Louisiana State Univ, Choppin Labs Chem, Baton Rouge, LA 70803 USA
[2] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
来源：
CHEMICAL PHYSICS LETTERS | 2000年 / 321卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0009-2614(00)00311-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Self-assembled monolayers of n-alkanethiols, CH3-(CH2)(x)-SH, on An, Ag, and Cu have been studied with GIXAFS at the sulfur K-edge. For both pentanethiol and decanethiol monolayers on Ag and Cu, the three-fold hollow site is found to be the most probable sulfur binding site. However, observations for octadecanethiol indicate that the three-fold hollow site is not the exclusive binding site. In addition, the possible existence of disulfide bonds on the metal surface (adsorbed dialkyldisulfides) is not supported by the data. Preliminary results from monolayers on An are also reported. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：175 / 181
页数：7
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