Factors determining the photocatalytic activity of immobilized porphyrins in organic and water media

Abstract

The kinetic parameters of the cholesterol (in water) and tryptophane (in organic solvents) photooxidation sensitized by aminoacid derivatives of tetraphenylporphyrin immobilized on MF-4SK sulfocationic copolymer (analogue of N afion 117) were determined. It was shown that the activity of investigated systems depends on supramolecular structure of the polymer and on the type of porphyrin-polymer binding in organic solvents. In water, activity of investigated systems depends on supramolecular structure of the polymer only.