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A Catalytic and Positively Thermosensitive Molecularly Imprinted Polymer
Central China Normal University.
Cranfield University, UK.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-1815-9699
2011 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 21, no 6, 1194-1200 p.Article in journal (Refereed) Published
Abstract [en]

A catalytic and positively thermosensitive molecularly imprinted polymer is reported. This unique imprinted polymer was composed of 4-nitrophenyl phosphate-imprinted networks that exhibited a thermosensitive interpolymer interaction between poly(2-trifluoromethylacrylic acid) (PTFMA) and poly(1-vinylimidazole) (PVI), which contains catalytically active sites. At a relatively low temperature (such as 20 degrees C), this imprinted polymer did not demonstrate significant catalytic activity for the hydrolysis of 4-nitrophenyl acetate due to the interpolymer complexation between PVI and PTFMA, which blocked access to the active sites of PVI and caused shrinking of the polymer. Conversely, at higher temperatures (such as 40 degrees C), this polymer showed significant catalytic activity resulting from the dissociation of the interpolymer complexes between PVI and PTFMA, which facilitated access to the active sites of PVI and inflated the polymer. Unlike previously reported poly(N-isopropylacrylamide)-based molecularly imprinted polymers, which demonstrated decreased molecular recognition and catalytic activity with increased temperatures, i.e., negatively thermosensitive molecular recognition and catalysis abilities, this imprinted polymer exploits the unique interpolymer interaction between PVI and PTFMA, enabling the reversed thermal responsiveness.

Place, publisher, year, edition, pages
John Wiley and Sons, Ltd , 2011. Vol. 21, no 6, 1194-1200 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-67171DOI: 10.1002/adfm.201001906ISI: 000288559100023OAI: diva2:407779
Available from: 2011-04-01 Created: 2011-04-01 Last updated: 2015-07-27

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Turner, Anthony
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