QENS and NMR studies of 3-picoline-water solutions

被引：12

作者：

Almásy, L

Bánki, P

Bellissent-Funel, MC

Bokor, M

Cser, L

Jancsó, G

Tompa, K

Zanotti, JM

机构：

[1] Res Isnt Solid State Phys & Opt, H-1525 Budapest, Hungary

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

[3] Atom Energy Res Inst, H-1525 Budapest, Hungary

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2002年 / 74卷 / Suppl 1期

关键词：

D O I：

10.1007/s003390201783

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quasi-elastic neutron scattering measurements were performed on aqueous solutions of 3-picoline (3-methylpyridine) at room temperature. H-D substitution on both the solute and the water was used to separate the dynamics of the two species. The analysis of the translational diffusive motion at different concentrations shows that at high picoline content the diffusion coefficient of water decreases strongly and becomes similar to that of the solute, indicating strong coupling between the motions of the solute and the solvent. Activation energies characteristic of the dynamic behavior of the methyl group were determined from H-1 spin-lattice relaxation rate measurements for H2O and D2O solutions of 3-picoline above 310 K.

引用

收藏

页码：S516 / S518

页数：3

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