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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/17024

Title: Molecularly Imprinted Polypyrrole Based Impedimentric Sensor for Theophylline Determination
Authors: Ratautaite, Vilma
Ramanaviciene, Almira
Baleviciute, Ieva
Ramanavicius, Arunas
Issue Date: 2014
Citation: ELECTROCHIMICA ACTA, 130, p. 361-367
Abstract: In this study development of impedimetric sensor based on oxygen terminated boron-doped nanocrystalline diamond (B:NCD:O) modified with theophylline imprinted polypyrrole is described. Hydrogen peroxide induced chemical formation of polypyrrole molecularly imprinted by theophylline was applied for the modification of conducting silicon substrate covered by B:NCD:O film. Non-imprinted polypyrrole layer was formed on similar substrate in order to prove efficiency of imprinted polypyrrole. Electrochemical impedance spectroscopy was applied for the evaluation of analyte-induced changes in electrochemical capacitance/resistance. The impact of polymerization duration on the capacitance of impedimetric sensor was estimated. A different impedance behavior was observed at different ratio of polymerized monomer and template molecule in the polymerization media. The influence of ethanol as additive to polymerization media on registered changes in capacitance/resistance was evaluated. Degradation of sensor stored in buffer solution was evaluated. (C) 2014 Elsevier Ltd. All rights reserved.
Notes: [Ratautaite, Vilma; Baleviciute, Ieva; Ramanavicius, Arunas] Vilnius Univ, Fac Chem, Dept Phys Chem, LT-03225 Vilnius, Lithuania. [Janssens, Stoffel D.; Haenen, Ken; Nesladek, Milos] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Janssens, Stoffel D.; Haenen, Ken; Nesladek, Milos] IMEC VZW, IMOMEC, B-3590 Diepenbeek, Belgium. [Ramanaviciene, Almira] Vilnius Univ, Fac Chem, NanoTechnas Ctr Nanotechnol & Mat Sci, LT-03225 Vilnius, Lithuania. [Ramanavicius, Arunas] Lab BioNanoTechnol, Ctr Phys Sci & Technol, LT-01108 Vilnius, Lithuania. arunas.ramanavicius@chf.vu.lt
URI: http://hdl.handle.net/1942/17024
DOI: 10.1016/j.electacta.2014.03.035
ISI #: 000336880700047
ISSN: 0013-4686
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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