Dynamic process of the photo-chemically produced flavin radicals in a neutral micelle studied by a magnetic field effect

被引：13

作者：

Horiuchi, M ^{[1
]}

Maeda, K ^{[1
]}

Arai, T ^{[1
]}

机构：

[1] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 394卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.06.143

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 dynamics of the free radicals generated from the photo-induced electron transfer reaction from the phenyl ether group of Triton X-100 micelle to flavin derivatives has been studied by transient absorption (TA) spectra and its magnetic field effect (MFE). By the MFE on TA spectrum, one can selectively observe radical species avoiding the overlap of the TA signal of the triplet state. By virtue of this, the protonation kinetics from the anion radical to the neutral radical has been able to be analyzed. The dynamic process of the anion radicals depends on the hydrophobic character of flavin derivatives. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：344 / 348

页数：5

共 16 条

[1]

Buchachenko A. L, 1984, SPIN POLARIZATION MA

[2] Incorporation and photodegradation of flavin and indole derivatives in anionic, cationic and neutral micellar dispersions [J].

Bueno, CA ;

Silva, E ;

Edwards, AM .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 1999, 52 (1-3) :123-130

[3] Photochemical and pharmacokinetic properties of selected flavins [J].

Edwards, AM ;

Bueno, C ;

Saldaño, A ;

Silva, E ;

Kassab, K ;

Polo, L ;

Jori, G .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 1999, 48 (01) :36-41

[4] VISIBLE-LIGHT EFFECTS ON TUMORAL CELLS IN A CULTURE-MEDIUM ENRICHED WITH TRYPTOPHAN AND RIBOFLAVIN [J].

EDWARDS, AM ;

SILVA, E ;

JOFRE, B ;

BECKER, MI ;

DEIOANNES, AE .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 1994, 24 (03) :179-186

[5] Magnetic field effect on electron transfer reactions of flavin derivatives associated with micelles [J].

Horiuchi, M ;

Maeda, K ;

Arai, T .

APPLIED MAGNETIC RESONANCE, 2003, 23 (3-4) :309-318

[6]

HORIUCHI M, IN PRESS

[7] ENERGY-TRANSFER (DEAZAFLAVIN -] FADH2) AND ELECTRON-TRANSFER (FADH2 -] T-LESS-THAN-GREATER-THAN) KINETICS IN ANACYSTIS-NIDULANS PHOTOLYASE [J].

KIM, ST ;

HEELIS, PF ;

SANCAR, A .

BIOCHEMISTRY, 1992, 31 (45) :11244-11248

[8] FLAVIN DERIVATIVES VIA BROMINATION OF 8-METHYL SUBSTITUENT [J].

MCCORMICK, DB .

JOURNAL OF HETEROCYCLIC CHEMISTRY, 1970, 7 (02) :447-+

[9] Effect of coulomb interaction on the dynamics of the radical pair in the system of flavin mononucleotide and hen egg-white lysozyme (HEWL) studied by a magnetic field effect [J].

Miura, T ;

Maeda, K ;

Arai, T .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (26) :6474-6478

[10] LIGHT-ABSORPTION STUDIES ON NEUTRAL FLAVIN RADICALS [J].

MULLER, F ;

WALKER, WH ;

MASSEY, V ;

BRUSTLEIN, M ;

HEMMERICH, P .

EUROPEAN JOURNAL OF BIOCHEMISTRY, 1972, 25 (03) :573-+

← 1 2 →