期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 37, 页码 20225-20230出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202106316
关键词
functional self-assembly; nanostructures; polyphenols; supramolecular chemistry; surface engineering
资金
- Australian Research Council Centre of Excellence in Convergent Bio-Nano Science and Technology [CE140100036]
- National Health and Medical Research Council Senior Principal Research Fellowship [GNT1135806]
- Australian Government [e87]
- National Science Foundation (NSF) [ECCS-1542148]
- National Institutes of Health [DP2 HL137187]
- NSF [1845683]
- Netherlands Organisation for Scientific Research [019.182EN.034]
- JSPS KAKENHI [20F20373]
- JSPS [P20373]
- Austrian Science Fund (FWF) [P20373, E87] Funding Source: Austrian Science Fund (FWF)
- Grants-in-Aid for Scientific Research [20F20373] Funding Source: KAKEN
The study introduces a versatile and robust coating (pBDT-TA) self-assembled from tannic acid (TA) and a self-polymerizing aromatic dithiol (BDT), which can be precisely tuned in thickness on diverse substrates and exhibits high stability in various harsh aqueous environments. Moreover, the coating enables secondary reactions and easy integration of other compounds, showcasing its potential for diverse applications.
Interfacial modular assembly has emerged as an adaptable strategy for engineering the surface properties of substrates in biomedicine, photonics, and catalysis. Herein, we report a versatile and robust coating (pBDT-TA), self-assembled from tannic acid (TA) and a self-polymerizing aromatic dithiol (i.e., benzene-1,4-dithiol, BDT), that can be engineered on diverse substrates with a precisely tuned thickness (5-40 nm) by varying the concentration of BDT used. The pBDT-TA coating is stabilized by covalent (disulfide) bonds and supramolecular (pi-pi) interactions, endowing the coating with high stability in various harsh aqueous environments across ionic strength, pH, temperature (e.g., 100 mM NaCl, HCl (pH 1) or NaOH (pH 13), and water at 100 degrees C), as well as surfactant solution (e.g., 100 mM Triton X-100) and biological buffer (e.g., Dulbecco's phosphate-buffered saline), as validated by experiments and simulations. Moreover, the reported pBDT-TA coating enables secondary reactions on the coating for engineering hybrid adlayers (e.g., ZIF-8 shells) via phenolic-mediated adhesion, and the facile integration of aromatic fluorescent dyes (e.g., rhodamine B) via pi interactions without requiring elaborate synthetic processes.
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