Low magnetic field effects on a photoinduced electron transfer reaction in an ionic liquid

被引：1

作者：

Harada, Nanshi ^{[1
]}

Matsuo, Taisuke ^{[1
]}

Yago, Tomoaki ^{[1
]}

Maeda, Kiminori ^{[1
]}

Wakasa, Masanobu ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Dept Chem, Sakura Ku, 255 Shimo Ohkubo, Saitama 3388570, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2021年 / 773卷

关键词：

Magnetic field effect; Electron transfer reaction; Ionic liquid; RADICAL-PAIR; RECOMBINATION REACTIONS; BENZOPHENONE; NANOSECOND; MECHANISM; MAGNETORECEPTION; PICOSECOND; DYNAMICS; SPECTRA; YIELDS;

D O I：

10.1016/j.cplett.2021.138569

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：

Low Magnetic field effects on a photoinduced electron transfer reaction between benzophenone and 1,4-diazabicyclo [2.2.2] octane (DABCO) in an ionic liquid of N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)amide were studied with nanosecond transient absorption measurements. At a magnetic field (similar to 2 mT) comparable with the hyperfine coupling in DABCO cation, so-called low field effects (LFEs), whose effect is opposite to the magnetic field effects caused by the hyperfine coupling mechanism, were observed on the yield of the benzophenone anion radical. The magnitude of the LFE is linearly increased with the increase of the lifetime of the radical ion pair. The present study provides basic data to clarify the mechanism of LFEs in biological systems.

引用

页数：7

共 37 条

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