Magnetic field and isotope effects on photochemistry of chain-linked compounds containing benzophenone and hydrogen-donor moieties

被引：31

作者：

Nakagaki, R ^{[1
]}

Yamaoka, M ^{[1
]}

Takahira, O ^{[1
]}

Hiruta, K ^{[1
]}

Fujiwara, Y ^{[1
]}

Tanimoto, Y ^{[1
]}

机构：

[1] HIROSHIMA UNIV,FAC SCI,HIGASHIHIROSHIMA 724,JAPAN

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1997年 / 101卷 / 04期

关键词：

D O I：

10.1021/jp961893d

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：

The magnetic field effects on the decay kinetics for chain-linked triplet biradicals have been observed by the use of a laser photolysis apparatus with a conventional electromagnet and a pulsed magnet. Biradical lifetimes increase steeply to their maxima from the zero field to ca. 2 T. The biradical decay times tend to decrease gradually with further increase of the magnetic field intensity to 14 T. The decreased lifetimes for triplet biradicals can be explained in terms of spin-lattice relaxation due to hyperfine anisotropy and to g tensor anisotropy.

引用

页码：556 / 560

页数：5

共 40 条

[1] ELECTRON SPIN RESONANCE STUDIES OF GAMMA-IRRADIATED SINGLE CRYSTALS OF AROMATIC COMPOUNDS .2. RESULTS FOR DIPHENYLACETIC ACID AND GENERAL PROBLEMS OF INTERPRETATION [J].