TY - JOUR
T1 - Phenothiazine Redox Active Conducting Polymer Films at Nanocomposite Surfaces
AU - Murphy, Brian
AU - Singh, Baljit
AU - Delaney, Aoife
AU - Warren, Susan
AU - Dempsey, Eithne
N1 - Publisher Copyright:
© 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PY - 2020/1/23
Y1 - 2020/1/23
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85082169863&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/ab6a83
DO - 10.1149/1945-7111/ab6a83
M3 - Article
AN - SCOPUS:85082169863
SN - 0013-4651
VL - 167
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
M1 - 027525
ER -