Patent ID: 7909867

Claim:
A material, comprising: a) an interpenetrating polymer network hydrogel, wherein said interpenetrating polymer network hydrogel comprises: i) a first hydrophilic network, wherein said first hydrophilic network is an entangled network of self-linked hydrophilic telechelic macromonomers covalently bonded to themselves or other of said macromonomers in said first network, wherein each of said hydrophilic telechelic macromonomers is a poly(ethylene) glycol (PEG) diacrylate or poly(ethylene) glycol (PEG) dimethacrylate based telechelic macromonomer; ii) wherein said first entangled hydrophilic network is interpenetrated with a second hydrophilic network, wherein said second network is a network of crosslinked poly(acrylic) acid; and b) biomolecules covalently linked to said interpenetrating polymer network hydrogel.