Vibrational dynamics of benzoic acid in nonpolar solvents studied by subpicosecond infrared pump-probe spectroscopy

被引：15
|
作者：
Yamaguchi, Sayuri [1 ]
Banno, Motohiro
Ohta, Kaoru [1 ]
Tominaga, Keisuke [1 ,2 ]
Hayashi, Tomoyuki [3 ]
机构：
[1] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan
[2] Kobe Univ, Mol Photosci Res Ctr, CREST JST, Kobe, Hyogo 6578501, Japan
[3] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
来源：
CHEMICAL PHYSICS LETTERS | 2008年 / 462卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2008.07.108
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 vibrational dynamics of the OH stretching mode of the benzoic acid dimer in nonpolar solvents have been studied by subpicosecond, frequency-resolved infrared pump-probe spectroscopy. The signal consists of biexponential decay and a quantum beat, which is due to the intermolecular mode of the hydrogen bond coupled to the OH stretching mode. The subpicosecond component is suggested to be due to the vibrational relaxation of the low-frequency modes of the dimer, whereas the picosecond component is assigned to vibrational cooling. The frequency of the Fourier spectra of a quantum beat correlates with that of the OH stretching mode. The physical origin of the correlation is discussed. (c) 2008 Published by Elsevier B. V.
引用
收藏
页码：238 / 242
页数：5
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