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On/off-switchable electrochemical sensor for folicacid based on molecularly imprinted technology.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.
Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology. (Biosensors & Bioelectronics)
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2013 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 36, 92-95 p.Article in journal (Refereed) Published
Abstract [en]

The combination of smart polymers with molecular imprinting offers a powerful tool to design more effective sensors and medical devices. In this study, a temperature sensitive amine-terminated poly(N-isopropylacrylamide) block with (N,N'-methylenebisacrylamide) cross-linker along with o-phenylenediamine was electropolymerised on a gold electrode in the presence of folic acid (FA) as template to produce an on/off-switchable molecularly imprinted polymer (MIP) affinity sensor for folic acid. Differential pulse voltammetry and cyclic voltammetry were used to characterise the FA-imprinted layer. Incubation of the MIP-modified electrode with FA resulted in a suppression of the ferro/ferricyanide redox process. The highest sensitivity of this temperature gated on/off-switchable folic acid sensor was achieved at 22 °C. Such switchable affinity materials offer considerable potential for the design of highly selective and controllable biosensors and immunoassays.

Place, publisher, year, edition, pages
2013. Vol. 36, 92-95 p.
Keyword [en]
MIP, Folic acid, biosensor, smart material
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-102941DOI: 10.1016/j.elecom.2013.09.014ISI: 000328927600023OAI: oai:DiVA.org:liu-102941DiVA: diva2:684763
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VR
Funder
Swedish Research Council
Available from: 2014-01-08 Created: 2014-01-08 Last updated: 2017-12-06

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Turner, AnthonyTiwari, Ashutosh

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