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Title: | Molecularly Imprinted Polypyrrole Based Impedimentric Sensor for Theophylline Determination | Authors: | Ratautaite, Vilma JANSSENS, Stoffel HAENEN, Ken NESLADEK, Milos Ramanaviciene, Almira Baleviciute, Ieva Ramanavicius, Arunas |
Issue Date: | 2014 | Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | Source: | 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 | Keywords: | polypyrrole; molecularly imprinted polymer; nanocrystalline diamond (NCD); electrochemical impedance spectroscopy; theophylline;Polypyrrole; Molecularly imprinted polymer; Nanocrystalline diamond (NCD); Electrochemical impedance spectroscopy; Theophylline | Document URI: | http://hdl.handle.net/1942/17024 | ISSN: | 0013-4686 | e-ISSN: | 1873-3859 | DOI: | 10.1016/j.electacta.2014.03.035 | ISI #: | 000336880700047 | Rights: | © 2014 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2015 |
Appears in Collections: | Research publications |
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