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Layer by layer growth of electroactive conducting polymer/magnetite hybrid assemblies
University of Szeged, Hungary.ORCID iD: 0000-0003-3237-9222
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2013 (English)In: Synthetic metals, ISSN 0379-6779, E-ISSN 1879-3290, Vol. 171, p. 62-68Article in journal (Refereed) Published
Abstract [en]

Poly(thiophene-acetic-acid)/magnetite nanocomposite electrodes were fabricated from aqueous solutions on PDADMA (polydiallyldimethylammonium chloride) pre-treated ITO covered glass electrodes, employing layer by layer (LBL) technique. This approach was selected on the ground of the interaction between the surface OH-groups of the magnetite and the carboxylic group of the thiophene derivative. The gradual development of the hybrid assembly was followed by UV-vis spectroscopy, and was found to be continuous up to 30 bilayers. Moreover, the absorbance increase at the characteristic wavelengths was linear in the whole examined region. Importantly, the LBL-prepared composites proved to be electroactive, in aqueous phosphate buffer the Fe3+/Fe2+ redox transformation was observed. The electrocatalytic activity of the modified electrodes was demonstrated for electrooxidation of dopamine (DA), and the role of both components as well as their synergistic contribution was elucidated. Preliminary results indicate possible utilization of such hybrid assemblies in the amperometric detection of this analyte.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 171, p. 62-68
Keywords [en]
Magnetite, Poly(3-thiophene-acetic-acid), Hybrid, Layer by layer, Dopamine oxidation
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-218760DOI: 10.1016/j.synthmet.2013.03.016ISI: 000319848600010Scopus ID: 2-s2.0-84876556031OAI: oai:DiVA.org:kth-218760DiVA, id: diva2:1161460
Note

QC 20171130

Available from: 2017-11-30 Created: 2017-11-30 Last updated: 2017-11-30Bibliographically approved

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