Patent ID: 8263127

Claim:
A composition comprising a monomolecular layer of a water-soluble photo-activatable polymer and a matrix having at least one carbon, wherein the photo-activatable polymer comprises (a) a photo-activatable group, wherein the photo-activatable group is adapted to be activated by an irradiation source and to form a covalent bond between the water-soluble photo-activatable polymer and a matrix having at least one carbon; (b) a reactive group, wherein the reactive group is adapted to covalently react with a biomaterial; (c) a hydrophilic group, wherein the hydrophilic group is present in an amount sufficient to make the water-soluble photo-activatable polymer soluble in water; and (d) a polymer precursor; wherein the water-soluble polymer is represented by a formula: wherein n is 50 to 2000, k is 10 to 1000, and m is 10 to 1000; and wherein the matrix comprises a polymer or an organosilylated material, said polymer or organosilylated material comprising C—H bonds and said at least one carbon, and wherein the monomolecular layer is attached to the matrix by a covalent bond between the photo-activatable group and the at least one carbon.