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Bioelectrochemistry of Cytochrome c in a closed bipolar electrochemical cell

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Show simple item record Gamero-Quijano, Alonso Herzog, Grégoire Scanlon, Micheál D. 2019-12-06T11:34:53Z 2019-12-06T11:34:53Z 2019
dc.description peer-reviewed en_US
dc.description.abstract The reversible oxidation and reduction of Cytochrome c (Cyt c) is demonstrated with a closed bipolar electrochemical cell (CBPEC). Herein, a 4-electrode configuration was studied with the opposite poles of the bipolar electrode resting in separate aqueous and organic electrolyte solutions, respectively. Using biocompatible indium tin oxide (ITO) slides as the bipolar electrode poles, we investigated the influence of the redox potential of the reductant (decamethyferrocene or dimethylferrocene) in an α,α,α-trifluorotoluene organic phase on the observed voltammetry. Reversible electron transfer was only observed between Cyt c and decamethylferrocene. Use of the weaker dimethylferrocene as the reductant required a larger external bias of the driving electrodes to initiate the electron transfer reaction between the two poles of the bipolar electrode. Consequently, the surface of the ITO slide at the aqueous pole experienced a significant negative cathodic potential and underwent irreversible reduction. The biphasic setup using the 4-electrode CBPEC provides insights into electron transfer processes at an interface between two immiscible electrolyte solutions (ITIES), highlighting the strong probability of observing interfacial electron transfer between decamethylferrocene (but not dimethylferrocene) and Cyt c within the short ~1 V polarisable potential window available at an ITIES en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation ANR-15-IDEX-04-LUE en_US
dc.relation.ispartofseries Electrochemistry Communications;109 106600
dc.subject Bipolar electrochemistry en_US
dc.subject Four electrode configuration en_US
dc.subject Bipolar electrode en_US
dc.subject Cytochrome c en_US
dc.subject Bioelectrochemistry en_US
dc.title Bioelectrochemistry of Cytochrome c in a closed bipolar electrochemical cell en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.elecom.2019.106600
dc.contributor.sponsor ERC en_US
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor IRC en_US
dc.relation.projectid 13/SIRG/2137 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2934257

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