Patent ID: 7037649

Claim:
A nucleic acid-immobilized substrate comprising a substrate and a nucleic acid immobilized on the substrate, wherein (1) the substrate consists of a plastic selected from the group consisting of polyethylene, polystyrene, polycarbonate, polypropylene, phenol resin, epoxy resin, polycarbodiimide resin, polyvinyl chloride, polyvinylidene fluoride, polyethylene fluoride, polyimide, and acrylate resin, or the substrate carries a carrier thereon, said carrier consisting of the plastic; (2) the nucleic acid has a polymer comprising a compound having an unsaturated bond, said polymer being bonded to the 3′ end or 5′ end or both ends of the nucleic acid, said polymer being a polymer of a monomer having a base selected from the group consisting of thymine, a thymine derivative, uracil and a uracil derivative, with an average degree of polymerization of the polymer being not less than 3 and not more than 100; and (3) the nucleic acid-immobilized substrate is obtained by bringing the substrate into contact with the nucleic acid, and irradiating a contact portion with an electromagnetic wave, whereby the polymer reacts with the plastic.