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meso-Mono-[4-(1,4,7-triazacyclononanyl)]-tri(phenyl)]porphyrin and the respective zinc(ii)-complex: complete characterization and biomolecules binding abilities. | LitMetric
We aimed to synthesize a new series of triazacyclononanyl-porphyrins (4 and 5) with the potential ability to bind DNA. For this, the free-base porphyrin 4 and the corresponding Zn(ii)-complex 5 were synthesized by the Schiff base formation reaction. The binding ability of the porphyrin derivatives 4 and 5 with DNA from calf-thymus was studied by UV-vis and emission spectroscopy. Detailed analysis of the results suggests that the interaction of these systems most probably occurs through π-stacking and secondary hydrogen interaction surface binding with ct-DNA. Moreover, we also demonstrate the substantial ability of porphyrins 4 and 5 to generate (1)O2 and to photocleave plasmid DNA after irradiation.
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