Line shape of the stretching vibration of CO adsorbed on rough copper surfaces

被引：5

作者：

Bruckbauer, A ^{[1
]}

Otto, A ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

SURFACE SCIENCE | 2002年 / 502卷

关键词：

vibrations of adsorbed molecules; Raman scattering spectroscopy; surface defects; carbon monoxide; copper;

D O I：

10.1016/S0039-6028(01)01984-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The asymmetric broadening of the stretching vibration in Surface enhanced Raman scattering of CO adsorbed on cryocondensed copper films can be explained by considering dipole-dipole interaction of the molecules and clastic scattering at structures of atomic roughness. Calculated line shapes Lire in good agreement with the experiment. including the low wavenumber Shoulder. The variation of the line shape with the CO exposure can be modelled by in increased vibronic polarizability which is consistent with the increase of the dynamical dipole moment for the chemisorbed molecule due to back donation into the CO 2pi orbital. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：394 / 398

页数：5

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