Photoelectrocatalytic Oxidation of NADH at a Graphite Electrode Modified with a New Polymeric Phenothiazine

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dc.authoridDilgin, Yusuf/0000-0002-2980-6871
dc.authoridPopescu, Ion V./0000-0002-4589-7208
dc.contributor.authorGligor, Delia
dc.contributor.authorDilgin, Yusuf
dc.contributor.authorPopescu, Ionel Catalin
dc.contributor.authorGorton, Lo
dc.date.accessioned2025-01-27T20:17:22Z
dc.date.available2025-01-27T20:17:22Z
dc.date.issued2009
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description12th International Conference on Electroanalysis -- JUN 16-19, 2008 -- Prague, CZECH REPUBLIC
dc.description.abstractA new approach for photoelectrocatalytic oxidation of NADH is described, based on a graphite electrode (G) modified with a new phenothiazine derivative, polyphenothiazine formaldehyde (PPF). Electrochemical measurements reveal that G/PPF presents a quasireversible voltammetric response, corresponding to a 2e(-)/2H(+) transfer and that G/PPF modified electrodes show electrocatalytic activity for NADH oxidation. When the surface of the G/PPF modified electrode was irradiated with a light source (250 W Halogen lamp), a significant increase in the electrocatalytic current was observed. The second order electrocatalytic rate constant (k(obs,[NADH]=0) = 3.9 x 10(3) M-1 s(-1), pH 7.0) was calculated from rotating disk electrode experiments, performed at various NADH concentrations. From amperometric measurements, it was noticed that, in the presence of light irradiation, the sensitivity of NADH detection (calculated as I-max/K-M ratio) increased ca. 3 times.
dc.description.sponsorshipEuropean Soc Electroanal Chem,Int Soc Electrochem,Czech Chem Soc,Charles Univ, Fac Sci
dc.identifier.doi10.1002/elan.200804397
dc.identifier.endpage367
dc.identifier.issn1040-0397
dc.identifier.issn1521-4109
dc.identifier.issue3-5
dc.identifier.scopus2-s2.0-60549108448
dc.identifier.scopusqualityQ2
dc.identifier.startpage360
dc.identifier.urihttps://doi.org/10.1002/elan.200804397
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21556
dc.identifier.volume21
dc.identifier.wosWOS:000264063500018
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley-V C H Verlag Gmbh
dc.relation.ispartofElectroanalysis
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectNADH
dc.subjectElectrocatalytic oxidation
dc.subjectPhenothiazine derivative
dc.subjectModified graphite electrodes
dc.titlePhotoelectrocatalytic Oxidation of NADH at a Graphite Electrode Modified with a New Polymeric Phenothiazine
dc.typeConference Object

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