کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1407135 | 1501888 | 2008 | 10 صفحه PDF | دانلود رایگان |
The spectral properties of water-soluble cationic 5-[4-(5-carboxy-1-butoxy)-phenyl]-10,15,20-tris(4-N-methylpyridiniumyl)porphyrin and its complexes with Fe(III) and Mn(III) were studied in water and organic solvents (MeOH, EtOH, DMSO and DMF). The influence of solvent polarity on wavelengths of the absorbance and fluorescence band maxima is described, in connection with the large Stokes shifts of approximately 200 nm observed for all the porphyrin compounds. The Soret band λmax shift is correlated with Reichardt’s polarity parameter. The ability to fluorescence of manganese (III) and iron (III) complexes of 5-[4-(5-carboxy-1-butoxy)-phenyl]-10,15,20-tris(4-N-methylpyridiniumyl)porphyrin is shown and discussed on the grounds of their molecular structure. The comparison with 5,10,15,20-tetrakis(1-methyl-4-pyridyl)-21H,23H-porphine and its copper (II) complex is presented.
Journal: Journal of Molecular Structure - Volume 875, Issues 1–3, 17 March 2008, Pages 468–477