Solvent effect on fluorescence spectra of a spirooxazine

Solvent effect on fluorescence spectra of a spirooxazine Fluorescence and excitation spectra of spironaphthoxazine (SNO) in various solvents have been investigated systematically. The fluorescence in low-polar solvents normally originated from SNO in the excited state. In protic high-polar solvents, fluorescence from an excited intermediate species (X* h) relaxed from a part of the excited SNO by breaking a C-O bond in the oxazine ring was also observed. It has been found that a ground-state intermediate species (Xs), transformed from a part of ground-state SNO, is directly excited to its excited state (Xs *), which displays fluorescence in aprotic high-polar solvents. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Solvent effect on fluorescence spectra of a spirooxazine

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Publisher
Brill Academic Publishers
Copyright
Copyright © 2003 by VSP 2003
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856703322149026
Publisher site
See Article on Publisher Site

Abstract

Fluorescence and excitation spectra of spironaphthoxazine (SNO) in various solvents have been investigated systematically. The fluorescence in low-polar solvents normally originated from SNO in the excited state. In protic high-polar solvents, fluorescence from an excited intermediate species (X* h) relaxed from a part of the excited SNO by breaking a C-O bond in the oxazine ring was also observed. It has been found that a ground-state intermediate species (Xs), transformed from a part of ground-state SNO, is directly excited to its excited state (Xs *), which displays fluorescence in aprotic high-polar solvents.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 17, 2004

References

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