Interaction of metal(II)-tetra(4-sulfonatophenyl) porphyrins with porous hydroxyapatite surfaces

► The porphyrin species were more associated with porous hydroxyapatite considered as biomaterial model. ► Calcium and hydroxyl were responsible for the interaction of porphyrin-apatite. ► Surface properties are main parameters for metaloporphyrin adsorption onto hydroxyapatite surface.