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Reference type: Journal
Authors: Li SJ, Ge Y, Tiwari A, Wang SQ, Turner APF, Piletsky SA
Article Title: 'On/off'-switchable catalysis by a smart enzyme-like imprinted polymer.
Publication date: 2011
Journal: Journal of Catalysis
Volume: 278
Issue: (2)
Page numbers: 173-180.
DOI: 10.1016/j.jcat.2010.11.011
Alternative URL: http://www.sciencedirect.com/science/article/B6WHJ-51Y3WTF-1/2/5ddf26ec8bd6a0887fc1f51381b1f1a1

Abstract: 'On/off'-switchable catalysis by a smart enzyme-like imprinted polymer is reported. This unique imprinted polymer was composed of poly(N-isopropylacrylamide)-containing p-nitrophenyl phosphate-imprinted networks that exhibited temperature-dependent hydrophilicity/hydrophobicity. At a relatively low temperature (such as 20 C), this polymer was capable of vigorous catalysis for the hydrolysis of p-nitrophenyl acetate due to its hydrophilic networks, which enabled access to the imprinted framework. On the contrary, at higher temperatures (such as 40 C), this polymer demonstrated poor catalysis resulting from its dramatically increased hydrophobicity, which inhibited access to the imprinted sites. Unlike previously reported imprinted polymers which lack adjustable networks, this novel imprinted polymer employed thermosensitive poly(N-isopropylacrylamide) networks, thus enabling the switchable catalysis
Template and target information: p-nitrophenyl phosphate, p-nitrophenyl acetate
Author keywords: catalysis, Smart materials, modulation, imprinted catalyst


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