Defining the Catechol-Cation Synergy for Enhanced Wet Adhesion to Mineral Surfaces
| Autor: | Greg P. Maier, Jacob N. Israelachvili, Nicholas J. Higdon, Michael V. Rapp, Howard A. Dobbs, Alison Butler, J. Herbert Waite |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Catechol Mineral Aqueous solution Cationic polymerization 02 engineering and technology General Chemistry Adhesion 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Catalysis 0104 chemical sciences Amino acid chemistry.chemical_compound Colloid and Surface Chemistry chemistry Chemical engineering Side chain Organic chemistry Molecule 0210 nano-technology |
| Zdroj: | Journal of the American Chemical Society. 138(29) |
| ISSN: | 1520-5126 |
| Popis: | Mussel foot proteins (Mfps) exhibit remarkably adaptive adhesion and bridging between polar surfaces in aqueous solution despite the strong hydration barriers at the solid–liquid interface. Recently, catechols and amines—two functionalities that account for >50 mol % of the amino acid side chains in surface-priming Mfps—were shown to cooperatively displace the interfacial hydration and mediate robust adhesion between mineral surfaces. Here we demonstrate that (1) synergy between catecholic and guanidinium side chains similarly promotes adhesion, (2) increasing the ratio of cationic amines to catechols in a molecule reduces adhesion, and (3) the catechol–cation synergy is greatest when both functionalities are present within the same molecule. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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