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HREELS studies of gold nanoparticles with dialkyl sulphide ligands

Chen, Y. and Palmer, R.E. and Shelley, E.J. and Preece, J.A. (2002) HREELS studies of gold nanoparticles with dialkyl sulphide ligands. Surface Science, 502-503. pp. 208-213. ISSN 0039-6028

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Abstract

We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond.

Item type: Article
ID code: 35428
Keywords: electron energy loss spectroscopy (EELS), electron bombardment, radiation damage, clusters, sulphides, self-assembled monolayers, energy electron irradiation, alkanethiolate monolayers, nanocrystal superlattices, alkyl chains, surfaces, AU(111), adsorption, scattering, substrate, Physics, Materials Chemistry, Surfaces and Interfaces, Surfaces, Coatings and Films, Condensed Matter Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 04 Nov 2011 15:08
    Last modified: 05 Sep 2014 13:09
    URI: http://strathprints.strath.ac.uk/id/eprint/35428

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