Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films
The immobilization of both components of a redox couple within films of the sulfonated tetrafluoroethylene polymer, Nafion, on the surface of carbon electrodes is reported. In particular, cationic and/or water-insoluble species are used to develop stable and robust reference electrodes by adjustment...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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American Chemical Society
2019
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| _version_ | 1826263842133377024 |
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| author | Chen, L Compton, R |
| author_facet | Chen, L Compton, R |
| author_sort | Chen, L |
| collection | OXFORD |
| description | The immobilization of both components of a redox couple within films of the sulfonated tetrafluoroethylene polymer, Nafion, on the surface of carbon electrodes is reported. In particular, cationic and/or water-insoluble species are used to develop stable and robust reference electrodes by adjustment and optimization of both the film thickness and the level of doping of the film, as an alternative to using standard commercial reference electrodes. Different redox couples were evaluated: methyl viologen dication/cation (MV2+/MV+), tris(2,2′-bipyridyl)ruthenium(II)/ruthenium(III) (Ru(bpy)32+/Ru(bpy)33+), ferrocene/ferrocenium (Fc/Fc+), and poly(vinylferrocene)/poly(vinylferrocenium) (PVFc/PVFc+). These reference electrodes demonstrate a good stability over 10 days and 1000 successive scans; in particular, Nafion-confined Fc/Fc+PF6– was shown to display the best performance. This type of reference electrode, as a solid-state electrolyte-free reference electrode, has several advantages, including full retention of the redox species within the films together with ease of both fabrication and miniaturization. |
| first_indexed | 2024-03-06T19:58:17Z |
| format | Journal article |
| id | oxford-uuid:2666c934-ad47-432b-808a-bb19cb7e33f6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:58:17Z |
| publishDate | 2019 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:2666c934-ad47-432b-808a-bb19cb7e33f62022-03-26T12:00:44ZReference electrodes for electrochemical sensors based on redox couples immobilized within nafion filmsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2666c934-ad47-432b-808a-bb19cb7e33f6EnglishSymplectic Elements at OxfordAmerican Chemical Society2019Chen, LCompton, RThe immobilization of both components of a redox couple within films of the sulfonated tetrafluoroethylene polymer, Nafion, on the surface of carbon electrodes is reported. In particular, cationic and/or water-insoluble species are used to develop stable and robust reference electrodes by adjustment and optimization of both the film thickness and the level of doping of the film, as an alternative to using standard commercial reference electrodes. Different redox couples were evaluated: methyl viologen dication/cation (MV2+/MV+), tris(2,2′-bipyridyl)ruthenium(II)/ruthenium(III) (Ru(bpy)32+/Ru(bpy)33+), ferrocene/ferrocenium (Fc/Fc+), and poly(vinylferrocene)/poly(vinylferrocenium) (PVFc/PVFc+). These reference electrodes demonstrate a good stability over 10 days and 1000 successive scans; in particular, Nafion-confined Fc/Fc+PF6– was shown to display the best performance. This type of reference electrode, as a solid-state electrolyte-free reference electrode, has several advantages, including full retention of the redox species within the films together with ease of both fabrication and miniaturization. |
| spellingShingle | Chen, L Compton, R Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title | Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title_full | Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title_fullStr | Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title_full_unstemmed | Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title_short | Reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| title_sort | reference electrodes for electrochemical sensors based on redox couples immobilized within nafion films |
| work_keys_str_mv | AT chenl referenceelectrodesforelectrochemicalsensorsbasedonredoxcouplesimmobilizedwithinnafionfilms AT comptonr referenceelectrodesforelectrochemicalsensorsbasedonredoxcouplesimmobilizedwithinnafionfilms |