Characterization of Polypyridine-graft-PEG Copolymer at Interface
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概要
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Polypyridine grafted with poly (ethylene glycol) copolymers (Py-g-PEG) with varying composition were prepared through radical copolymerization of methyl-terminated PEG macromonomer and 4-pyridylmethyl methacrylate, and the obtained copolymer spontaneously adsorbs from aqueous solution onto gold surfaces, where the pyridine parts act as the multipoint anchor to the surface and the PEG parts provide the strong steric repulsion between the chains. As a result, the highly protein repellent and stable surface was constructed through multipoint pyridine attachment as compared with singlepoint pyridine attachment. Furthermore, the property of multimolecular micellization for the obtained copolymer in aqueous milieu was examined to estimate the relation between the surface properties on the substrate and the self-assembling ability in aqueous milieu. Py-g-PEGs thus prepared are promising materials to functionalize metal and semiconductor materials and to self-assemble into micelles in biotechnological and biomedical fields.
- Japan Society of Colour Materialの論文