Probing water dynamics with OH-

被引：33
作者：
Corridoni, T.
Sodo, A.
Bruni, F.
Ricci, M. A.
Nardone, M.
机构：
[1] Univ Roma Tre, Dipartimento Fis E Amaldi, I-00146 Rome, Italy
[2] Univ Laquila, Dipartimento Fis, Laquila, Italy
来源：
CHEMICAL PHYSICS | 2007年 / 336卷 / 2-3期
关键词：
water; aqueous solutions; Raman spectra;
D O I：
10.1016/j.chemphys.2007.06.013
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：
Isotropic Raman spectra of aqueous solutions of LiOH, NaOH and KOH at concentrations ranging from high dilution to saturation have been measured and the frequency and width of the OH- stretching band have been analyzed. The dependence of the bandwidth oil solute concentration suggests that the OH- vibration undergoes a transition from fast to slow modulation regimes as the solvent concentration decreases below the value of similar to 20 water molecules per solute molecule. A correlation between this finding and structural modifications of the H-bond network of the solvent at similar concentrations is envisaged. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：183 / 187
页数：5
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