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Title: Time Domain Simulations of Chemical Bonding Effects in Surface-Enhanced Spectroscopy

We employ the atom-centered density-matrix propagation method to illustrate how time-dependent structural and conformational changes affect the electronic structure and derived spectroscopic properties of a prototypical finite metal cluster-bound π-conjugated organic, namely the Ag7-benzenethiol complex. We find that the calculated spectroscopic properties are dictated by large amplitude motion which controls the coupling between the aromatic ring of the molecule and the metal cluster. The simulated vibrational spectra of Ag7-benzenethiol are in accord with previous experiments which probe Raman scattering from benzenethiol adsorbed on silver surfaces.
 [1] ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0021-9606; 29990; 48129; KC0301020
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 139; Journal Issue: 17
American Institute of Physics (AIP)
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY Environmental Molecular Sciences Laboratory