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Open AccessArticle

An Insight into Ionic Conductivity of Polyaniline Thin Films

1
Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9,44-100 Gliwice, Poland
2
Centre of Polymer and Carbon Materials of the Polish Academy of Sciences, MariiSkłodowskiej-Curie 34, 41-819 Zabrze, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(12), 2877; https://doi.org/10.3390/ma13122877
Received: 10 May 2020 / Revised: 19 June 2020 / Accepted: 23 June 2020 / Published: 26 June 2020
(This article belongs to the Special Issue Advances in Materials for Organic Optoelectronics and Photonics)
The work addresses an issue of the conductivity phenomenon in conductive polymer thin films. Polyaniline was chosen as a broadly used and thoroughly investigated conductive polymer in order to test and show capabilities of the developed original approach based on impedance spectra analysis. A number of films of different thickness were deposited onto a Pt electrode surface and consequently investigated in aqueous solution containing perchloric acid as an electrolyte. The processes that occur in polyaniline film were studied by cyclic voltammetry, electrochemical quartz crystal microgravimetry (EQCM) and electrochemical impedance spectroscopy (EIS). The role of incorporated ions as charge carriers was investigated with respect to the control of the conductivity properties of the film. Along with detailed polyaniline behavior study, the work makes up a fundamental scientific impact on theoretical electrochemistry and electroanalytical techniques. View Full-Text
Keywords: EIS; EQCM; conductive polymer; polyaniline; ionic conductivity EIS; EQCM; conductive polymer; polyaniline; ionic conductivity
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Chulkin, P.; Łapkowski, M. An Insight into Ionic Conductivity of Polyaniline Thin Films. Materials 2020, 13, 2877.

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