Magnetic field effects on the photoinduced electron transfer of 10-methylphenothiazine with 4-(4-cyanobenzoyloxy) TEMPO in fluid solutions

被引:33
作者
Mori, Y [1 ]
Sakaguchi, Y [1 ]
Hayashi, H [1 ]
机构
[1] RIKEN, Inst Phys & Chem Res, Mol Photochem Lab, Wako, Saitama 35101, Japan
关键词
D O I
10.1016/S0009-2614(98)00050-5
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
Magnetic field effects on both the quenching of the tripler excited state of 10-methylphenothiazine (S = 1) with 4-(4-cyanobenzoyloxy)TEMPO (S = 1/2) and the dynamic behavior of generated radical ion pairs (S = 1/2 and 3/2) were directly observed by a nanosecond laser photolysis technique, in 2-propanol, with increasing field from 0 T to 2 T, the quenching rate was decreased by (11.8 +/- 1.2)% and the yield of the escaped cation radical was increased by (90 +/- 8)%. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:446 / 451
页数:6
相关论文
共 14 条
[11]  
Shida T., 1988, ELECT ABSORPTION SPE
[12]   MAGNETIC-FIELD EFFECTS IN CHEMICAL-KINETICS AND RELATED PHENOMENA [J].
STEINER, UE ;
ULRICH, T .
CHEMICAL REVIEWS, 1989, 89 (01) :51-147
[13]   EFFECT OF CONCENTRATION AND MAGNETIC-FIELD ON RADICAL ION (WURSTERS BLUE CATION AND BENZOQUINONE ANION) QUENCHING OF ANTHRACENE TRIPLETS IN FLUID SOLUTION [J].
TACHIKAWA, H ;
BARD, AJ .
CHEMICAL PHYSICS LETTERS, 1974, 26 (01) :10-15
[14]   Magnetic field effects on the hydrogen abstraction reactions of triplet benzophenone with thiophenol in nonviscous homogeneous solutions [J].
Wakasa, M ;
Hayashi, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (39) :15640-15643