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Single-molecule study of the synergistic effects of positive charges and Dopa for wet adhesion

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Abstract

Using AFM based single-molecule force spectroscopy, we studied the synergy between Dopa and lysine for wet adhesion on titania (TiO2) and mica surfaces. We found that the binding forces for lysine–Dopa dipeptides are significantly higher when the positive charge of lysine is unprotected on both surfaces. However, such a synergistic effect is absent when the sequence is reversed. We attribute such differential synergistic effects to their distinct structure for load distribution within the molecules, which may represent a general principle for synergistic strong adhesion.

Graphical abstract: Single-molecule study of the synergistic effects of positive charges and Dopa for wet adhesion

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Publication details

The article was received on 11 Jan 2017, accepted on 28 Feb 2017 and first published on 28 Feb 2017


Article type: Communication
DOI: 10.1039/C7TB00131B
Citation: J. Mater. Chem. B, 2017, Advance Article
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    Single-molecule study of the synergistic effects of positive charges and Dopa for wet adhesion

    Y. Li, T. Wang, L. Xia, L. Wang, M. Qin, Y. Li, W. Wang and Y. Cao, J. Mater. Chem. B, 2017, Advance Article , DOI: 10.1039/C7TB00131B

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