Layer by layer growth of electroactive conducting polymer/magnetite hybrid assemblies

B. Endrodi, A. Bíró, C. Janáky, I. Y. Tóth, C. Visy

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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 Fe 3+/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.

Original languageEnglish
Pages (from-to)62-68
Number of pages7
JournalSynthetic Metals
Volume171
DOIs
Publication statusPublished - 2013

Fingerprint

Ferrosoferric Oxide
Conducting polymers
conducting polymers
Magnetite
magnetite
assemblies
Thiophenes
Thiophene
Electrodes
thiophenes
ITO glass
Electrooxidation
glass electrodes
Ultraviolet spectroscopy
Acetic acid
Acetic Acid
dopamine
electrodes
Chlorides
Dopamine

Keywords

  • Dopamine oxidation
  • Hybrid
  • Layer by layer
  • Magnetite
  • Poly(3-thiophene-acetic-acid)

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Layer by layer growth of electroactive conducting polymer/magnetite hybrid assemblies. / Endrodi, B.; Bíró, A.; Janáky, C.; Tóth, I. Y.; Visy, C.

In: Synthetic Metals, Vol. 171, 2013, p. 62-68.

Research output: Contribution to journalArticle

Endrodi, B. ; Bíró, A. ; Janáky, C. ; Tóth, I. Y. ; Visy, C. / Layer by layer growth of electroactive conducting polymer/magnetite hybrid assemblies. In: Synthetic Metals. 2013 ; Vol. 171. pp. 62-68.
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