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dc.contributor.authorAgee, Alec
dc.contributor.authorGill, Thomas Mark
dc.contributor.authorPace, Gordon
dc.contributor.authorSegalman, Rachel
dc.contributor.authorFurst, Ariel
dc.date.accessioned2025-03-04T21:51:21Z
dc.date.available2025-03-04T21:51:21Z
dc.date.issued2023-01-01
dc.identifier.urihttps://hdl.handle.net/1721.1/158306
dc.description.abstractBio-electrochemical systems (BESs) are promising for renewable energy generation but remain hindered by inefficient electron transfer at electrode surfaces. As the toolbox of bio-anode materials increases, rigorous electrochemical characterization of emerging materials is needed. Here, we holistically characterize the electrochemical interaction of flavin mononucleotide (FMN), an electron shuttle in biological systems and a cofactor for oxidoreductase enzymes, with the bio-inspired mixed conducting polymer poly{3-[6'-(N-methylimidazolium)hexyl]thiophene} (P3HT-Im+). The behavior of this polymer is compared to the equivalent polymer without the histidine-like imidazolium. We find improved conductivity and charge storage in imidazolium-containing polymers beyond what is explained by differences in the electroactive area. The P3HT-Im+ further shows internal charge storage but with negligible faradaic contribution, indicating that charge storage capacity may translate to improved biocatalysis non-intuitive ways. Finally, one-electron transfer is observed between FMN and glassy carbon, while a bio-similar two-electron transfer is observed for the P3HT-Im+. To our knowledge, this is the first example of a concerted two-electron transfer between FMN and an electrode interface, which we attribute to the bio-inspired, histidine-like imidazolium functional groups in the polymer. These studies demonstrate the importance of bio-relevant materials characterization when such materials are deployed in BESs.en_US
dc.language.isoen
dc.publisherThe Electrochemical Societyen_US
dc.relation.isversionof10.1149/1945-7111/acb239en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivativesen_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourceThe Electrochemical Societyen_US
dc.titleElectrochemical Characterization of Biomolecular Electron Transfer at Conductive Polymer Interfacesen_US
dc.typeArticleen_US
dc.identifier.citationAlec Agee et al 2023 J. Electrochem. Soc. 170 016509en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemical Engineeringen_US
dc.relation.journalJournal of The Electrochemical Societyen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2025-03-04T21:37:36Z
dspace.orderedauthorsAgee, A; Gill, TM; Pace, G; Segalman, R; Furst, Aen_US
dspace.date.submission2025-03-04T21:37:38Z
mit.journal.volume170en_US
mit.journal.issue1en_US
mit.licensePUBLISHER_CC
mit.metadata.statusAuthority Work and Publication Information Neededen_US


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