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Reference type: Journal
Authors: Ma Y, Li HY, He SJ, Zhang HT, Zhang HQ
Article Title: Efficient one-pot synthesis of water-compatible and photoresponsive molecularly imprinted polymer nanoparticles by facile RAFT precipitation polymerization.
Publication date: 2014
Journal: Journal of Polymer Science Part A: Polymer Chemistry
Volume: 52
Issue: (14)
Page numbers: 1941-1952.
DOI: 10.1002/pola.27213

Abstract: A facile, general, and highly efficient one-pot approach to obtain azobenzene (azo)-containing molecularly imprinted polymer (MIP) nanoparticles with photoresponsive template binding and release properties in aqueous media is described, which involves the combined use of hydrophilic macromolecular chain transfer agent-mediated reversible addition-fragmentation chain transfer precipitation polymerization and easily available water-insoluble azo functional monomers. The resulting azo-containing MIPs were characterized with dynamic laser scattering (DLS), SEM, FTIR, static contact angle and water dispersion studies, and equilibrium binding experiments. They have proven to be nanoparticles (their diameters being around 104-397 nm, as determined by DLS in methanol) with surface-grafted hydrophilic polymer brushes and exhibit excellent pure water-compatible template binding properties. Moreover, obvious photoregulated template binding behaviors were observed for such azo-containing MIP nanoparticles, which led to their largely accelerated template release in the aqueous media under the UV light irradiation. Furthermore, the general applicability of the strategy was also demonstrated. 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1941-1952
Template and target information: 2,4-D, propranolol, 2,4-Dichlorophenoxyacetic acid
Author keywords: azo polymers, molecular imprinting, nanoparticles, Photoresponsive, RAFT precipitation polymerization, Water-compatible

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