Mussel Inspired Polymer Coating Reported
December 18, 2007
Dopamine is one of several catecholomines, or chemical compounds derived from the amino acid tyrosine. In the October 19 issue of the journal Science, NIDCR grantees and colleagues report they have developed an aqueous, dopamine-rich solution that, through simple dip coating of objects, forms versatile polymer coatings. Inspired by the composition of natural adhesive proteins in marine mussels, the scientists found their method of dopamine self polymerization formed thin, surface-adherent polydopamine coatings on a variety of inorganic and organic materials. They included: noble metals, i.e., those that are resistant to corrosion or oxidation; oxides; polymers, semiconductors; and ceramics. The scientists reported, “Polydopamine coatings can, in turn, serve as a versatile platform for secondary surface-mediated reactions . . . This two-step method of surface modification is distinctive in its ease of application, use of simple ingredients and mild reaction conditions, applicability to many types of materials of complex shape, and capacity for multiple end users.”