Issue 8, 2020

Amino-containing tannic acid derivative-mediated universal coatings for multifunctional surface modification

Abstract

The development of a universal coating strategy for the construction of functional surfaces and modulation of surface properties is of great research interest. Tannic acid (TA) could serve as a sole precursor for the deposition of colorless coatings on substrate surfaces. However, the deposition of TA requires a high salt concentration (0.6 M), which may limit its practical application. Herein, primary amine moieties were introduced on the gallic acid groups in TA. The resultant amine-containing TA derivative (TAA) can self-polymerize under mild conditions (10 mM, Tris buffer), and form uniform and colorless coatings in a material-independent manner. In comparison with the TA coating under the same preparation conditions, the TAA coating exhibits an increased thickness as measured by ellipsometry. The TAA coating is adapted for secondary surface functionalization. The hydrophilic mPEG brushes can be grafted on the TAA coating to inhibit non-specific protein adsorption. A biotin probe can be immobilized on the TAA coating to promote specific binding with avidin. In addition, the TAA coating can be utilized for in situ reduction of silver ions to AgNPs. The resulting AgNP-loaded TAA coating can inhibit bacterial adhesion and prevent biofilm formation.

Graphical abstract: Amino-containing tannic acid derivative-mediated universal coatings for multifunctional surface modification

Supplementary files

Article information

Article type
Paper
Submitted
13 Yan 2020
Accepted
17 Kul 2020
First published
17 Kul 2020

Biomater. Sci., 2020,8, 2120-2128

Amino-containing tannic acid derivative-mediated universal coatings for multifunctional surface modification

Y. F. Cheng, D. Pranantyo, G. Kasi, Z. S. Lu, C. M. Li and L. Q. Xu, Biomater. Sci., 2020, 8, 2120 DOI: 10.1039/D0BM00242A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements