Reorientations and translations in a fragile glass-former:: magnetic resonance studies of meta-fluoroaniline

被引：8

作者：

Kircher, O

Böhmer, R ^{[1
]}

Alba-Simionesco, C

机构：

[1] Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

[2] Univ Paris 11, CPMA, CNRS, URA 1104, F-91405 Orsay, France

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1999年 / 479卷 / 2-3期

关键词：

magnetic resonance; meta-fluoroaniline; glass-former;

D O I：

10.1016/S0022-2860(98)00870-9

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 rotational dynamics in supercooled liquid and glassy meta-fluoroaniline was studied using proton and fluorine spin-lattice relaxation times. It is shown that while proton relaxation is dominated by homonuclear relaxation, for fluorine heteronuclear relaxation prevails. The results could be well described using a distribution of correlation times. The mean correlation times show pronounced deviations from the simple Arrhenius law. In addition translational self-diffusion coefficients were measured for T > 200 K using a static magnetic field gradient technique. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：195 / 200

页数：6

共 22 条

[1] THERMODYNAMIC ASPECTS OF THE VITRIFICATION OF TOLUENE, AND XYLENE ISOMERS, AND THE FRAGILITY OF LIQUID HYDROCARBONS [J].