Coverage dependent change in orientation for the adsorption of benzyl mercaptan on Au(111)

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• 作者：Sturrock ; E.J. ; Chen ; Q. ; Borchardt ; P.H. ; Richardson ; N.V.
• 关键词：Benzyl mercaptan ; Thiols ; EELS ; Au(111)
• 刊名：Journal of Electron Spectroscopy and Related Phenomena
• 出版年：2004
• 期刊代码：51_03682048
• 类别：ch
• 出版时间：April, 2004
• 卷：135
• 期：2-3
• 页码：127-134
• 文件大小：345 K

摘要

The self-assembly of monolayers of benzyl mercaptan (benzenemethanethiol, C₆H₅CH₂SH) on Au(111) at room temperature has been studied by low energy electron diffraction and high resolution electron energy loss spectroscopy (EELS). It was found that the orientation of the molecule depends on coverage with the aromatic ring being parallel to the surface for low coverage and more perpendicular at higher coverage. Low energy electron diffraction indicates a (√7×√7)R19.1° adsorbate structure at saturation coverage.