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Cluster approximations of chemically enhanced molecule-surface Raman spectra: The case of trans-1,2-bis (4-pyridyl) ethylene (BPE) on gold

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
581
Identifiers
DOI: 10.1016/j.cplett.2013.07.005
Disciplines
  • Chemistry

Abstract

Abstract The system, trans-1,2-bis (4-pyridyl) ethylene (BPE) on a Au substrate, is used to examine the applicability of cluster approximations for chemically enhanced molecule-surface Raman spectra. Different size of Au clusters, and adsorption sites, as well as different functionals were studied. In addition, the relative intensity of the two dominant modes of the theoretical spectra have been calculated for the different cluster sizes and adsorption sites. It was found that already a Au20 cluster leads to excellent agreement with experimentally recorded spectra.

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