Paramagnetic relaxation of radical cations in alkane solutions as measured by time-resolved magnetic field effects

被引：10
作者：
Mashnin, AS
Anishchik, SV
Borovkov, VI
Yeletskikh, IV
Anisimov, OA
Molin, YN
机构：
[1] Russian Acad Sci, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
APPLIED MAGNETIC RESONANCE | 2001年 / 20卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1007/BF03162330
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：
Spin-lattice relaxation times of radical cations were measured by the decay of the time-resolved magnetic field effect in the recombination fluorescence of radical ion pairs in liquid hydrocarbons at high concentrations of solvent holes acceptor. The dependences of spin-lattice relaxation time on the magnetic field strength and solvent viscosity were studied. The results could not be explained in terms of the model of ion-molecular charge transfer involving monomeric or dimeric radical cations. The paramagnetic relaxation observed in a weak magnetic field is attributed to internal reorganizations of aggregates that originate from radical cations at high acceptor concentration.
引用
收藏
页码：473 / 482
页数：10
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