Vibrational relaxation of liquid water in ionic solvation shells

被引：71

作者：

Kropman, MF ^{[1
]}

Bakker, HJ ^{[1
]}

机构：

[1] FOM, Inst AMOLF, NL-1098 SJ Amsterdam, Netherlands

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 370卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(03)00123-4

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：

Femtosecond two-color pump-probe spectroscopy is used to measure the vibrational lifetime of the O-H stretch vibration in solutions of KF, NaCl, NaBr, and NaI in HDO:D2O. We observe a slow component (roughly 2-4 times slower than in HDO:D2O) in the decay of the absorption change, which is due to O-H groups that are hydrogen bonded to the dissolved anions. The time constant of this slow component depends on the nature of the anions and is observed to decrease with temperature, in contrast with the temperature dependence of the relaxation of the OH stretch vibration in pure HDO:D2O. (C) 2003 Elsevier Science B.V. All rights reserved.

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页码：741 / 746

页数：6

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