Multinuclear high-pressure NMR investigations of undercooled aqueous solutions of hydrophobic ions

被引:2
作者
Bradl, S [1 ]
Schatz, T [1 ]
Liegl, B [1 ]
Lang, EW [1 ]
机构
[1] Univ Regensburg, Inst Biophys & Phys Biochem, D-93040 Regensburg, Germany
来源
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1998年 / 102卷 / 01期
关键词
high pressure; solutions; spectroscopy nuclear magnetic resonance; transport properties;
D O I
10.1002/bbpc.19981020107
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
Multinuclear spin-lattice relaxation rates, cross-relaxation rates and self-diffusion coefficient measurements are reported over wide ranges of temperature, pressure and concentration in undercooled aqueous solutions of tetraalkylammonium bromides. These dissolved organic cations with apolar surface groups provide model systems to investigate the effect of coulombic, hydrophobic and H-bond interactions upon the solvent and solute dynamics within the random, transient H-bond network of undercooled water.
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页码:41 / 57
页数:17
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