Abstract: A photodynamic composite including a porphyrin having four quaternized nitrogens, wherein the porphyrin is covalently bonded to a polymer containing reactive amines covalently bonded to a solid-state support is claimed. A method for sanitizing contaminated water is claimed including exposing the contaminated water to the photodynamic composite, in the presence of light and oxygen, wherein, a sufficient quantity of singlet oxygen and super oxide anions is provided by the chemical reaction of the light and the photosensitizer to destroy the pollutants or pathogens present in the contaminated water and to oxidize organic contaminants into carbon dioxide and water; thereby rendering the water potable.

Abstract: A photodynamic composite including a porphyrin having four quaternized nitrogens, wherein the porphyrin is covalently bonded to a polymer containing reactive amines covalently bonded to a solid-state support is claimed. A method for sanitizing contaminated water is claimed including exposing the contaminated water to the photodynamic composite, in the presence of light and oxygen, wherein, a sufficient quantity of singlet oxygen and super oxide anions is provided by the chemical reaction of the light and the photosensitizer to destroy the pollutants or pathogens present in the contaminated water and to oxidize organic contaminants into carbon dioxide and water; thereby rendering the water potable.