TY - JOUR
T1 - Electronic mechanism of the surface enhanced Raman scattering
AU - Nakai, Hiromi
AU - Nakatsuji, Hiroshi
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1995
Y1 - 1995
N2 - Electronic mechanism of the surface enhanced Raman scattering (SERS) is investigated by an ab initio molecular orbital theory. The time-dependent Hartree-Fock method is used to calculate the polarizability of the surface-molecule interacting system. For representing the surface effect, we use small solid clusters Ag2, Ag10, K2, Pd 2, and MgO. The present method succeeds in describing the enhancement of the Raman intensity for the adsorbed CO molecule. The maximum intensity of the Ag10CO system is calculated to be seven orders of magnitude larger than that of the free CO molecule. Furthermore, the wavelength dependence of the Raman intensity calculated by the Ag10CO system agrees with the experimental spectrum. The electronic mechanism of the SERS is due to the resonance transitions, in which the surface polarization and the surface-molecule interaction are very important. This mechanism explains the orientation- and distance-dependencies in the surface-adsorbate interacting systems.
AB - Electronic mechanism of the surface enhanced Raman scattering (SERS) is investigated by an ab initio molecular orbital theory. The time-dependent Hartree-Fock method is used to calculate the polarizability of the surface-molecule interacting system. For representing the surface effect, we use small solid clusters Ag2, Ag10, K2, Pd 2, and MgO. The present method succeeds in describing the enhancement of the Raman intensity for the adsorbed CO molecule. The maximum intensity of the Ag10CO system is calculated to be seven orders of magnitude larger than that of the free CO molecule. Furthermore, the wavelength dependence of the Raman intensity calculated by the Ag10CO system agrees with the experimental spectrum. The electronic mechanism of the SERS is due to the resonance transitions, in which the surface polarization and the surface-molecule interaction are very important. This mechanism explains the orientation- and distance-dependencies in the surface-adsorbate interacting systems.
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U2 - 10.1063/1.469704
DO - 10.1063/1.469704
M3 - Article
AN - SCOPUS:13244265091
VL - 103
SP - 2286
EP - 2294
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 6
ER -