Murphy, Brian and Singh, Baljit and Delaney, Aoife and Warren, Susan and Dempsey, Eithne (2020) Phenothiazine Redox Active Conducting Polymer Films at Nanocomposite Surfaces. Journal of The Electrochemical Society, 167 (2). 027525. ISSN 1945-7111

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Abstract

A redox active polymer based on phenothiazine (thionine) doped poly (3,4-ethylenedioxythiophene) PEDOT film was examined on a range of transducers (glassy carbon, Pt and screen printed electrodes). This was followed by investigations into the use of super activated carbon (SAC) and platinized super activated carbon (SAC-Pt) nanostructured electrode modifiers for enhanced polythionine/PEDOT film deposition. The Polythionine/PEDOT film was found to undergo a two-electron, two-proton (pH 1–4) or a two-electron, one-proton process (pH 4–8). Electrochemical investigations included scan rate studies confirming the surface confined behavior, with the most stable films (15% decrease in electroactivity) being evident at SPE modified with SAC-Pt—surface coverage (Γ) 1.16 × 10−10 mol cm−2. Surface morphology of the formed film was investigated via SEM/EDX and film hydrophobicity examined via contact angle measurements.

Item Type:	Article
Keywords:	Phenothiazine; Redox; Active Conducting; Polymer Films; Nanocomposite Surfaces;
Academic Unit:	Faculty of Science and Engineering > Chemistry Faculty of Science and Engineering > Research Institutes > Human Health Institute
Item ID:	16157
Identification Number:	https://doi.org/10.1149/1945-7111/ab6a83
Depositing User:	Eithne Dempsey
Date Deposited:	21 Jun 2022 09:40
Journal or Publication Title:	Journal of The Electrochemical Society
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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