1H NMR study of water/methanol solutions as a function of temperature and concentration

被引：27

作者：

Corsaro, Carmelo ^{[1
,2
,3
]}

Maisano, Roberta ^{[4
]}

Mallamace, Domenico ^{[5
,6
]}

Dugo, Giacomo ^{[5
]}

机构：

[1] Univ Messina, Dipartimento Fis, I-98166 Messina, Italy

[2] Univ Messina, CNISM, I-98166 Messina, Italy

[3] Fdn F Frisone, I-95125 Catania, Italy

[4] Univ Messina, Ctr Calcolo Elettron A Villari, I-98166 Messina, Italy

[5] Univ Messina, Dipartimento Sci Ambiente Sicurezza Territorio Al, I-98166 Messina, Italy

[6] Ist Zooprofilatt Sperimentale Sicilia A Mirri, I-90129 Palermo, Italy

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2013年 / 392卷 / 04期

关键词：

Water-methanol mixture; H-1; NMR; Self-diffusion; Chemical shift; NUCLEAR-MAGNETIC-RESONANCE; METHANOL-WATER SOLUTIONS; MOLECULAR-DYNAMICS; NMR RELAXATION; CONFINED WATER; LIQUID WATER; MIXTURES; DIFFUSION; SCATTERING; AMMONIA;

D O I：

10.1016/j.physa.2012.11.008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied by means of high resolution Nuclear Magnetic Resonance the dynamical and structural properties of water/methanol solutions as a function of temperature and concentration. We measured dynamical quantities such as the self-diffusion coefficient and the spin lattice relaxation time and structurally dependent quantities like the proton chemical shift of all the chemical groups present in the mixture. In fact, by means of high resolution NMR spectroscopy, it is possible to study separately all the hydrogens belonging to the different functional groups. We argue that the physical properties of the solution are influenced by the interplay between hydrophobic and hydrophilic interactions that in turn depend on the solution concentration and on the temperature. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：596 / 601

页数：6

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