Journal
JOURNAL OF POLYMER SCIENCE
Volume 58, Issue 1, Pages 70-76Publisher
WILEY
DOI: 10.1002/pola.29438
Keywords
films; green chemistry; living polymerization; metal-free polymerization; oxygen tolerant; PET-RAFT; photopolymerization; polymer brush
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Funding
- National Science Foundation DMREF program [DMR-1436263]
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An open-to-air method for the efficient synthesis of surface-tethered polymer brushes based on photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization is reported. Key to this approach is an enzyme-assisted strategy using glucose oxidase to facilitate the in situ removal of oxygen during the polymerization process. Control experiments in the absence of glucose oxidase confirm the importance of enzymatic deoxygenation for successful polymerization of a variety of acrylamide, methacrylate, and acrylate monomers. In accordance with controlled polymerization kinetics, a linear increase in brush height as a function of irradiation time for a range of light intensities is demonstrated. Importantly, the use of light to mediate growth and the inherent monomer versatility of PET-RAFT allow for the facile fabrication of well-defined polymer brushes under aqueous conditions. (c) 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019
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