Author(s) :

Hugues Gambolo Kabeya, Godfrey Sebiawu, Muzele Kalulu Taba, Muzele Kalulu Taba, Josephine Kankolongo Ntumba, Muthumuni Managa, Tebello Nyokong, Pitchou Bokolombe Ngoy.

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Abstract :

The photodynamic antimicrobial activities and laser flash photolysis studies were conducted for meso-tetrakis (2-bromophenyl), meso-tetrakis (3-bromophenyl) and meso-tetrakis (4-bromophenyl) free base porphyrins and their Sn(IV) complexes. It has been shown that Tin Metalated porphyrins have high singlet oxygen quantum yields compare to their respective free bases (0.645, 0.708, 0.732 vs 0.445, 0.585 and 0.412) for 1Sn, 2Sn and 3Sn vs 1, 2 and 3 respectively. The disapearence of Staphylococcus aureus or E. Coli was observed around 2,5 μM. The decay rate constants of all porphyrins were around 1.50 ×106 s-1 and 2.35 ×104 s-1 for aerated and degassed solutions respectively.

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