Water dynamics in DMSO-water mixture

被引：10

作者：

Cabral, JT

Luzar, A

Teixeira, J

Bellissent-Funel, MC ^{[1
]}

机构：

[1] CE Saclay, CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

[2] Univ Calif San Francisco, Dept Pharmaceut Chem, San Francisco, CA 94143 USA

[3] Univ Calif Berkeley, Berkeley, CA 94720 USA

来源：

PHYSICA B-CONDENSED MATTER | 2000年 / 276卷

基金：

美国国家科学基金会;

关键词：

hydrogen bonds; quasielastic scattering;

D O I：

10.1016/S0921-4526(99)01829-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study water dynamics in the eutectic DMSO-water mixture by incoherent quasielastic neutron scattering. Water individual motions are modelled by uncoupled whole-molecule translations and rotations around the center of mass. We determine water self-diffusion coefficients, residence times for jump diffusion and rotational relaxation times, previously related to the hydrogen-bond "lifetime". We therefore quantify the perturbation of water dynamics due to competing hydrophilic/hydrophobic interactions with DMSO. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：508 / 509

页数：2