Engineering Low-Fouling and pH-Degradable Capsules through the Assembly of Metal-Phenolic Networks

Yi Ju, Jiwei Cui, Markus Müllner, Tomoya Suma, Ming Hu, Frank Caruso

Research output: Contribution to journalArticlepeer-review

135 Scopus citations

Abstract

Metal-phenolic coordination chemistry provides a simple and rapid way to fabricate ultrathin films. Here, we report a facile strategy for the preparation of low-fouling and pH-degradable metal-phenolic network (MPN) capsules using a synthetic polyphenol derivative, poly(ethylene glycol) (PEG)-polyphenol, as a building block. PEG-MPN capsules exhibit reduced nonspecific protein adsorption and cell association compared with tannic acid (TA)-MPN capsules. In addition, they show faster disassembly at a biologically relevant pH (5) than TA-MPN capsules (80% in 5 h vs 30% in 10 days). PEG-MPN capsules combine both the low fouling properties of PEG and the advantages of the MPN-driven assembly process (e.g., fast assembly and pH-degradability). (Figure Presented).

Original languageEnglish
Pages (from-to)807-814
Number of pages8
JournalBiomacromolecules
Volume16
Issue number3
DOIs
StatePublished - 9 Mar 2015
Externally publishedYes

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