Electron dipole-dipole interaction in ESEEM of nitroxide biradicals

被引:168
|
作者
Kulik, LV
Dzuba, SA
Grigoryev, IA
Tsvetkov, YD
机构
[1] Russian Acad Sci, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Novosibirsk Organ Chem Inst, Novosibirsk 630090, Russia
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1016/S0009-2614(01)00721-7
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
Fourier transform of the standard primary electron spin echo envelope modulation (ESEEM) of nitroxide biradicals in organic glass shows a peak ascribed to electron-electron dipole-dipole interaction. The dipolar couplings obtained in imidazoline biradical and double spin-labeled peptide Trichogin GA IV are in good agreement with pulsed electron-electron double resonance (PELDOR) data. The intensity of this peak is increased substantially in a new three-pulse relaxation-induced dipolar modulation enhancement (RIDME) experiment, This experiment involves the non-resonant partner spin in the formation of ESEEM via a relaxation-induced change of the local dipolar field experienced by the resonant spin. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码:315 / 324
页数:10
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