Solvent effects on the absorption and fluorescence characteristics of tin(IV) mesoporphyrin. |
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Authors: | Y Chen B Zhang J G Chen D Y Huang |
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Affiliation: | School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, China. |
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Abstract: | The absorption and fluorescence characteristics of tin(IV) mesoporphyrin (SnMP) 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 values and measured relative values. Fluorescence lifetime, radiative lifetime and non-radiative lifetime were also calculated. The parameters showed variation depending on ligation as well as H-bonding. Unusual long lifetime and high quantum yields were found in alcohol solvents. This finding might contribute to elucidation of the nature of tin porphyrins to inhibit heme oxygenase. |
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