Solvent effects on the absorption and fluorescence characteristics of tin(IV) mesoporphyrin.
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.
Chen
Y
Y
School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, China.
Zhang
B
B
Chen
J G
JG
Huang
D Y
DY
D004791:Enzyme Inhibitors / Q000737:chemistry*; D005453:Fluorescence; D006860:Hydrogen Bonding; D008024:Ligands; D008665:Metalloporphyrins / Q000737:chemistry*; D010777:Photochemistry; D011524:Protoporphyrins / Q000737:chemistry; D011789:Quantum Theory; D012997:Solvents / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013053:Spectrophotometry
D004791:Enzyme Inhibitors; D008024:Ligands; D008665:Metalloporphyrins; D011524:Protoporphyrins; D012997:Solvents; C055421:tin mesoporphyrin