Nuclear magnetic resonance and dielectric spectroscopy of a simple supercooled liquid:: 2-methyl tetrahydrofuran

被引：46

作者：

Qi, F ^{[1
]}

El Goresy, T

Böhmer, R

Döss, A

Diezemann, G

Hinze, G

Sillescu, H

Blochowicz, T

Gainaru, C

Rössler, E

Zimmermann, H

机构：

[1] Univ Dortmund, D-44221 Dortmund, Germany

[2] Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

[3] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany

[4] Max Planck Inst Med Res, D-69120 Heidelberg, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2003年 / 118卷 / 16期

关键词：

D O I：

10.1063/1.1563599

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：

The small-molecule glass former methyl tetrahydrofuran (MTHF) was investigated using dielectric spectroscopy, spin-lattice relaxometry, multidimensional stimulated-echo nuclear magnetic resonance techniques, and field gradient diffusometry. We show experimentally that MTHF nicely fits into the pattern of related small-molecule glass-forming liquids, including the existence of a high-frequency contribution to the dielectric loss, the appearance of a pronounced translational enhancement, the dominance of small average rotational jump angles, and the existence of short-lived dynamical heterogeneity. (C) 2003 American Institute of Physics.

引用

页码：7431 / 7438

页数：8

共 49 条

[21] VISCOUS LIQUIDS AND GLASS TRANSITION .2. SECONDARY RELAXATIONS IN GLASSES OF RIGID MOLECULES [J].