Characterization of micelle: Magnetic field effects on photoexcited reactions of 2-methyl-1, 4-naphthoquinone

被引：2

作者：

Gao, Yuhe ^{[1
]}

Chen, Jiafu ^{[1
]}

Pan, Yang ^{[1
]}

Zhuang, Xiujuan ^{[1
]}

Yu, Shuqin ^{[1
]}

机构：

[1] Hefei Natl Lab Phys Sci Microscale, Hefei, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 287卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

MFEs; MNQ; radical pairs; micellar solution; relaxation mechanism;

D O I：

10.1016/j.colsurfa.2006.03.038

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 (MFEs) of the radical pairs on the reaction of the photoexcited 2-methyl-1, 4-naphthoquinone in two sodium alkyl sulfate micelles (SDS and SDeS) were investigated under magnetic fields below 1.7 T by a nanosecond laser flash photolysis technique. The result showed that MFEs on the decay of radical pairs and yields of escaped radicals in SDeS micellar solution were saturated at lower magnetic field than in SDS micellar solution. Such saturation could be qualitatively interpreted by relaxation mechanism. Peculiar MFEs on the second chemical and physical process were found for the first time in SDeS micellar solution. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：126 / 131

页数：6

共 26 条

[1]

Chen JF, 2004, CHINESE J CHEM, V22, P1235

[2] Magnetic field effects on the reaction of the photoexcited triplet of 2-methyl-1,4-naphthoquinone in SDS micellar solution containing the 4-(lauroylamino)-TEMPO radical [J].

Chen, JF ;

Mori, Y ;

Sakaguchi, Y ;

Hayashi, H .

MOLECULAR PHYSICS, 2002, 100 (09) :1355-1363

[3]

FENDLER JH, 1975, MICELLAR MACROMOLECU

[4] Magnetic field effects and CIDEP due to the d-type triplet mechanism in intra-molecular reactions [J].

Hayashi, H ;

Sakaguchi, Y .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2005, 6 (01) :25-36

[5] Magnetic field effects and spin dynamics of radical reactions in solution [J].

Hayashi, H ;

Sakaguchi, Y ;

Wakasa, M .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2001, 74 (05) :773-783

[6] THEORETICAL-STUDY OF RELAXATION MECHANISM IN MAGNETIC-FIELD EFFECTS ON CHEMICAL-REACTIONS [J].

HAYASHI, H ;

NAGAKURA, S .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1984, 57 (02) :322-328

[7] MAGNETIC-FIELD EFFECTS ON THE PHOTOCHEMICAL HYDROGEN ABSTRACTION OF 2',3',4',5',6'-PENTAFLUOROACETOPHENONE IN A BRIJ-35 MICELLAR SOLUTION [J].

IGARASHI, M ;

SAKAGUCHI, Y ;

HAYASHI, H .

MOLECULAR PHYSICS, 1994, 82 (06) :1165-1179

[8] MAGNETIC-FIELD EFFECTS ON RADICAL RECOMBINATION IN A CAGE AND IN THE BULK OF A VISCOUS SOLVENT [J].

MARGULIS, LA ;

KHUDYAKOV, IV ;

KUZMIN, VA .

CHEMICAL PHYSICS LETTERS, 1985, 119 (2-3) :244-250

[9] EFFECT OF DIOXANE ON THE BENZIL-SDS RADICAL PAIR SYSTEM - A STUDY IN THE PRESENCE OF HIGH MAGNETIC-FIELDS [J].

MISRA, A ;

DUTTA, R ;

CHOWDHURY, M .

CHEMICAL PHYSICS LETTERS, 1995, 243 (3-4) :308-313

[10] Inversion in the magnetic field effect of benzilketyl:SDS radical pair at high fields [J].

Misra, A ;

Haldar, M ;

Chowdhury, M .

CHEMICAL PHYSICS LETTERS, 1999, 305 (1-2) :63-70

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