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Mercury Segregation and Diselenide Self-Assembly on Gold

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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Phys. Chem. C 2012, 116, 3, 2431-2437
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    Mercury Segregation and Diselenide Self-Assembly on Gold
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    † INFN, Istituto Nazionale di Fisica Nucleare, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
    ‡ CNISM and Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
    § CNRS, Institut des Sciences Moléculaires dʼOrsay, ISMO, UMR 8214, Bâtiment 351, 91405 Orsay Cedex, France
    Université Paris-Sud, Institut des Sciences Moléculaires dʼOrsay, ISMO, UMR 8214, Bâtiment 351, 91405 Orsay Cedex, France
    ∥ Department of Inorganic and Physical Chemistry, Indian Institute of Science, 560 012 Bangalore, India
    *Telephone: +39 010 353 6242. Fax: +39 010 314 218. E-mail: [email protected]
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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2012, 116, 3, 2431–2437
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    https://doi.org/10.1021/jp207157m
    Published December 17, 2011
    Copyright © 2011 American Chemical Society
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    Abstract

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    We have investigated the self-assembly of didecyldiselenide on gold containing mercury using X-ray photoelectron spectroscopy, cyclic voltammetry and infrared spectroscopy. The analysis of intensity and chemical shift of selected Se, Hg, and Au photoelectron lines on samples with increasing Hg content, show that didecyldiselenide adsorption strongly contributed to segregation of bulk Hg to the surface. The voltammetry results support this conclusion and suggest the formation of Hg–Au surface amalgam. The Hg surface segregation effect must be related to the restructuring of the surface following initial adsorption, and to the strong selenophilicity of Hg. The reflectance absorbance infrared spectroscopy studies show that the molecular layer on Hg–Au substrates lacks good order.

    Copyright © 2011 American Chemical Society

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    Results of 1H NMR, 13C NMR and 77Se NMR of didecyl diselenide and test of Hg segregation in absence of selenides. This material is available free of charge via the Internet at http://pubs.acs.org.

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    Cited By

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    This article is cited by 15 publications.

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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2012, 116, 3, 2431–2437
    Click to copy citationCitation copied!
    https://doi.org/10.1021/jp207157m
    Published December 17, 2011
    Copyright © 2011 American Chemical Society
    Request reuse permissions

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