Influence of nitroxides on CIDNP of micellised radical pairs and short-lived biradicals

被引：3
|
作者：
Shakirov, S. R.
Lebedeva, N. V.
Gorelik, V. R.
Tarasov, V. F.
Bagryanskaya, E. G.
机构：
[1] Russian Acad Sci, Int Tomog Ctr, Novosibirsk 630090, Russia
[2] Russian Acad Sci, Inst Chem Phys, Moscow, Russia
来源：
APPLIED MAGNETIC RESONANCE | 2006年 / 30卷 / 3-4期
关键词：
D O I：
10.1007/BF03166216
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The effects of stable nitroxide radicals on stimulated nuclear polarization (SNP) and chemically induced dynamic nuclear polarization (CIDNP) in short-lived consecutive biradicals and radical pairs in homogeneous solutions as well as spin-correlated radical pairs in micelles were studied in high and low magnetic fields. It is shown that experimentally observed effects of nitroxide additions on CIDNP and SNP can be well simulated taking into account only the increase in the rates of relaxation in the paramagnetic species constituting radical pairs or biradicals. Effects of coherent spin evolution in three-spin systems under study seem to be of negligible importance.
引用
收藏
页码：535 / 548
页数：14
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