Interaction Between Poly-N-Vinylpirrolidone, 5,10,15,20-Tetraphenylporphyrin and 5,10,15,20-Tetra(4'-Hydroxy-3',5'-Di-Tret-Butilphenyl)-21h,23h-Porphyrin

The interaction between poly-N-vinylpirrolidone, 5,10,15,20-tetraphenylporphyrin and 5,10,15,20-tetra(4'-hydroxy-3',5'-di-tret-butilphenyl)-21H,23H-porphyrin was studied by means of electron absorption spectroscopy, IR spectroscopy and isothermal titration calorimetry. It was found that in the case of 5,10,15,20-tetra(4'-hydroxy-3',5'-di-tret-butilphenyl)-21H,23H-porphyrin a stable complex with poly-N-vinylpirrolidone is formed. Reaction sites which are responsible for porphyrin immobilization on the polymer surface were specified. In the case of 5,10,15,20-tetraphenylporphyrin no stable complex with poly-N-vinylpirrolidone is formed.