title: Reversible layer-by-layer deposition on solid substrates inspired by mussel byssus cuticle.
abstract: The protective coating on mussel (Mytilus galloprovincialis) byssus has attracted considerable research interest because of its excellent mechanical properties such as hardness and extensibility. These special properties are known to be highly related with specific interactions between mussel foot protein-1 and metal ions. In particular, the complexation between catechols in mfp-1 and iron(III) has been identified as a key interaction. This finding has given opportunities for pursuing promising applications. Herein, we report that emulating the properties of the mussel byssus cuticle provides an important platform for developing reversible layer-by-layer (LbL) deposition, an advanced technique for surface modification. LbL films were constructed on solid substrates by sequential immersion of substrates into solutions containing iron(III) and catecholic compounds. The thickness of the LbL films was effectively controlled by increasing the immersion steps, and the reversibility of the LbL deposition was demonstrated by addition of a chelating agent.
authors.affiliation: Department of Marine Biomaterials & Aquaculture, Pukyong National University, Busan 608-731 (Republic of Korea).
authors.forename: Suyeob
authors.initials: S
authors.lastname: Kim
authors.forename: Dong Soo
authors.initials: DS
authors.lastname: Kim
authors.forename: Sung Min
authors.initials: SM
authors.lastname: Kang
mesh_terms: D000818:Animals; D040761:Biomimetic Materials / Q000737:chemistry*; D049872:Bivalvia / Q000033:anatomy & histology / Q000737:chemistry*; D002396:Catechols / Q000737:chemistry*; D004295:Dihydroxyphenylalanine / Q000737:chemistry*; D004492:Edetic Acid / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D013499:Surface Properties
chemical_list: D002396:Catechols; D005290:Ferric Compounds; D004295:Dihydroxyphenylalanine; D004492:Edetic Acid
keywords: biomimetics; photoelectron spectroscopy; reversibility; surface functionalization