Solvent effects on the absorption and fluorescence characteristics of tin(IV) mesoporphyrin

Citation
Y. Chen et al., Solvent effects on the absorption and fluorescence characteristics of tin(IV) mesoporphyrin, SPECT ACT A, 57(12), 2001, pp. 2451-2456
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
ISSN journal
1386-1425 → ACNP
Volume
57
Issue
12
Year of publication
2001
Pages
2451 - 2456
Database
ISI
SICI code
1386-1425(200110)57:12<2451:SEOTAA>2.0.ZU;2-N
Abstract
The absorption and fluorescence characteristics of tin(IV) mesoporphyrin (S nMP) and its analog tin(IV) protoporphyrin (SnPP) were studied in a series of organic solvents. Fluorescence quantum yields were calculated using the Strickler-Berg equation. Good correlation was found between calculated valu es and measured relative values. Fluorescence lifetime, radiative lifetime and non-radiative lifetime were also calculated. The parameters showed vari ation depending on ligation as well as H-bonding. Unusual long lifetime and high quantum yields were found in alcohol solvents. This finding might con tribute to elucidation of the nature of tin porphyrins to inhibit heme oxyg enase. (C) 2001 Elsevier Science B.V. All rights reserved.