Does phenazine form triplet excimer and dimer anion radical?

被引：6

作者：

Choudhury, Sharmistha Dutta ^{[1
]}

Basu, Samita ^{[1
]}

机构：

[1] Saha Inst Nucl Phys, Div Chem Sci, Kolkata 700064, W Bengal, India

来源：

JOURNAL OF LUMINESCENCE | 2007年 / 124卷 / 01期

关键词：

laser flash photolysis; photoinduced electron transfer; magnetic field effect; hyperfine;

D O I：

10.1016/j.jlumin.2006.01.359

中图分类号：

O43 [光学];

学科分类号：

070207 [光学]; 0803 [光学工程];

摘要：

Laser flash photolysis of phenazine (PZ) solution reveals the existence of a stable species with a long lifetime at 380 nm in addition to the usual triplet PZ at 440 nm. The former is suggested to be due to formation of triplet PZ excimer. The triplet excimer also undergoes photoinduced electron transfer with some aromatic amines. The formation of PZ dimer anion radical and amine cation radicals are confirmed by external magnetic field effect studies. Measurement of B-1/2, which estimates hyperfine present in the system, also supports this assignment. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：33 / 38

页数：6

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