NMR-correlated high-field electron paramagnetic resonance spectroscopy

被引：27
|
作者：
Jeschke, G [1 ]
Spiess, HW [1 ]
机构：
[1] Max Planck Inst Polymer Res, D-55021 Mainz, Germany
来源：
CHEMICAL PHYSICS LETTERS | 1998年 / 293卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(98)00765-9
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：
A high-field electron paramagnetic resonance method is introduced for determining the relative orientation of the g and hyperfine tensors in disordered systems by correlation of NMR frequencies to the electron spin resonance fields. Simple and characteristic correlation patterns are obtained that are only moderately influenced by the violation of the high-field approximation for the nuclear spin. A pulse sequence based on electron-electron double resonance and spectral hole burning is applied to overcome the limitations of excitation bandwidth and deadtime. Experiments on the nitroxide spin probe TEMPOL in a polymer matrix reveal a small but significant non-coincidence of the two principal axes systems. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：9 / 18
页数：10
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