Synthesis, Photophysics, Computational Approaches, and Biomolecule Interactive Studies of Metalloporphyrins Containing Pyrenyl Units: Influence of the Metal Center.

Autor: Hahn da Silveira, Carolina, Chaves, Otávio A., Marques, Amanda C., Rosa, Nathália M. P., Costa, Luiz Antônio S., Almeida Iglesias, Bernardo
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Zdroj: European Journal of Inorganic Chemistry; 4/27/2022, Vol. 2022 Issue 12, p1-15, 15p
Abstrakt: A classical methodology to design free‐base meso‐tetra‐(1‐pyrenyl)porphyrin (H2TPyrP) and their corresponding metalloporphyrins containing Zn(II), Cu(II), Ni(II), Co(III), and Mn(III) was described. These porphyrins were characterized in terms of structure, photophysical, and interactions profile with calf‐thymus deoxyribonucleic acid (CT‐DNA) and bovine serum albumin (BSA). H2TPyrP exhibited five characteristic bands in the visible wavelength: Soret (432 nm) and Q‐bands (520–650 nm range), while the metalloporphyrins showed some spectrum shifts according to the nature of the ion, which were also explored by time‐dependent density functional theory (TD‐DFT) calculations. The fluorescence and singlet oxygen quantum yield (Φfl, ΦΔ, respectively) decreased with the presence of metal species in the porphyrin core. The porphyrins interact spontaneously via a ground‐state association in the minor groove of CT‐DNA following the increasing order of binding: CuTPyrP
Databáze: Complementary Index
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