Sum-frequency generation from thiophenol on silver in the mid and far-IR

被引：59

作者：

Braun, R

Casson, BD

Bain, CD

van der Ham, EWM

Vrehen, QHF

Eliel, ER

Briggs, AM

Davies, PB

机构：

[1] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

[2] Leiden Univ, Huygens Lab, NL-2300 RA Leiden, Netherlands

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

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 110卷 / 09期

关键词：

D O I：

10.1063/1.478345

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：

Sum-frequency (SF) spectra of a monolayer of thiophenol on silver are reported in the mid and far-IR (infrared). The free-electron laser FELIX was used to reach wavelengths up to 54 mu m. Molecular vibrations of thiophenol are observed at wavelengths near 10 mm (three modes), 14 mu m (1 mode), and 24 mu m (1 mode). The appearance of the different vibrational modes in the spectra varies dramatically due to interference between the resonant sum-frequency signal and the nonresonant sum-frequency signal from silver. The standard model used to describe line shapes in SF spectra is shown to be insufficient to explain the different line shapes for the various vibrational modes of thiophenol on silver. (C) 1999 American Institute of Physics. [S0021-9606(99)70709-9].

引用

页码：4634 / 4640

页数：7