Specific spin-correlation dependent magnetic field effects on radical pairs photo-generated by electron transfer from biphenyl to phenyl-pyrilium salts in micelle

被引：1

作者：

Parui, Partha Pratim ^{[1
]}

Manoj, N. ^{[2
]}

Banerjee, Sudip ^{[3
]}

Chowdhury, Mihir ^{[4
]}

机构：

[1] Jadavpur Univ, Dept Chem, Kolkata 700032, India

[2] CSIR, Photochem Res Unit, Reg Res Lab, Trivandrum 695019, Kerala, India

[3] Govt Coll Engn & Text Technol, Dept Chem, Berhampur 742101, WB, India

[4] Indian Assoc Cultivat Sci, Dept Phys Chem, Kolkata 700032, India

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 479卷 / 1-3期

关键词：

RECOMBINATION YIELD; EXCIPLEX;

D O I：

10.1016/j.cplett.2009.08.012

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：

We have studied the magnetic field effects (MFEs) on photo-generated various geminate phenyl-pyrilium/biphenyl radical pair (PP center dot/BP+center dot) of variable singlet/triplet spin-correlations within SDS micelle. When RPs are produced largely with singlet spin-correlation, the MFEs have been observed in two different time domains. It consists of both the initial (t = 0) decrease of radical yield with field, considering nanosecond phenomenon, and comparatively slow microsecond MFE. However, the RPs of relatively lower singlet spin-correlation shows only slow mu s behavior, which may indicate that only singlet spin-state is responsible for exhibiting initial stage MFEs. A kinetic scheme, based on Pedersen's 'super-cage model' for two-stage RP reaction in micelle, has been proposed for analysis. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：70 / 75

页数：6

共 26 条

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