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Issue 23, 2017
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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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Supplementary files

Article information


Submitted
11 Jan 2017
Accepted
28 Feb 2017
First published
28 Feb 2017

J. Mater. Chem. B, 2017,5, 4416-4420
Article type
Communication

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, 5, 4416
DOI: 10.1039/C7TB00131B

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