Journal article
Transportation and Accumulation of Redox Active Species at the Buried Interfaces of Plasticized Membrane Electrodes
Langmuir, Vol.31(38), pp.10599-10609
2015
Abstract
The transportation and accumulation of redox active species at the buried interface between glassy carbon electrodes and plasticized polymeric membranes has been studied using synchrotron radiation X-ray photoelectron spectroscopy (SR-XPS), near edge X-ray absorption fine structure (NEXAFS), in-situ electrochemical Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy, cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). Ferrocene tagged poly(vinyl chloride) [FcPVC], ferrocene (Fc) and its derivatives together with tetracyanoquinodimethane (TCNQ) doped plasticized polymeric membrane electrodes have been investigated, so as to extend the study of the mechanism of this reaction chemistry to different time scales (both small and large molecules with variable diffusion coefficients) using a range of complementary electrochemical and surface analysis techniques. This study also provides direct spectroscopic evidence for the transportation and electrochemical reactivity of redox active species, regardless of the size of the electrochemically reactive molecule, at the buried interface of the substrate electrode. With all redox dopants, when CA electrolysis was performed, redox active species were undetectable (< 1 wt.% of signature elements, or below the detection limit of SR-XPS and NEXAFS) in the outermost surface layers of the membrane, while a high concentration of redox species was located at the electrode substrate as a consequence of the deposition of the reaction product (Fc+-anion complex) at the buried interface between the electrode and the membrane. This reaction chemistry for redox active species within plasticized polymeric membranes may be useful in the fashioning of multilayered polymeric devices (e.g., chemical sensors, organic electronic devices, protective laminates, etc.) based on an electrochemical tunable deposition of redox molecules at the buried substrate electrode beneath the membrane.
Details
- Title
- Transportation and Accumulation of Redox Active Species at the Buried Interfaces of Plasticized Membrane Electrodes
- Authors
- Manzar Sohail (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringRoland De Marco (Author) - University of the Sunshine CoastZdenka Jarolimova (Author) - University of GenevaMarcin Pawlak (Author) - University of GenevaEric Bakker (Author) - University of GenevaNing He (Author) - Åbo Akademi UniversityRose-Marie Latonen (Author) - Åbo Akademi UniversityTom Lindfors (Author) - Åbo Akademi UniversityJohan Bobacka (Author) - Åbo Akademi University
- Publication details
- Langmuir, Vol.31(38), pp.10599-10609
- Publisher
- American Chemical Society
- Date published
- 2015
- DOI
- 10.1021/acs.langmuir.5b01693
- ISSN
- 0743-7463
- Copyright note
- Copyright © 2015 American Chemical Society. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Langmuir, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/acs.langmuir.5b01693
- Organisation Unit
- School of Science and Engineering - Legacy; Office of the Deputy Vice-Chancellor (Research and Innovation)
- Language
- English
- Record Identifier
- 99449264502621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary