Please use this identifier to cite or link to this item: http://earsiv.odu.edu.tr:8080/xmlui/handle/11489/2719
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dc.contributor.authorCelebi, Mutlu Sonmez-
dc.contributor.authorDemirci, Serpil-
dc.contributor.authorDukar, Nilgun-
dc.contributor.authorDumangoz, Mehmet-
dc.contributor.authorKuralay, Filiz-
dc.contributor.authorOzturk, Kubra-
dc.contributor.authorTunc, Selma-
dc.date.accessioned2022-08-17T07:18:52Z-
dc.date.available2022-08-17T07:18:52Z-
dc.date.issued2019-
dc.identifier.urihttp://doi.org/10.1016/j.matchemphys.2019.02.043-
dc.identifier.urihttp://earsiv.odu.edu.tr:8080/xmlui/handle/11489/2719-
dc.description.abstractGraphene/poly(o-phenylenediamine) (GN/PoPD) modified disposable pencil graphite electrode (PGE) was prepared using one-pot electropolymerization and the use of this novel and practical electrode in dopamine (DA) sensing was investigated in the present study. This is the first attempt to prepare this nanocomposite in a one step, very easy and low-cost electropolymerization procedure onto pencil graphite electrode and then to use the coated surface for dopamine detection in untreated biological fluids. Electrochemical performance of the electrode was compared with the poly(o-phenylenediamine) modified, graphene modified and unmodified PGEs. Improved electrochemical responses were obtained in the case of graphene/poly(o-phenylenediamine) modified one. The electrode responded in a wide linear range of 1.0 x 10(-3) mu M to 150.0 mu M with a very low detection limit of 0.16 nM for dopamine. It exhibited highly sensitive and selective results in the presence of ascorbic acid (AA) and uric acid (UA). The synergestic effects between poly(o-phenylenediamine) and graphene exhibited excellent electrocatalytic activity, selectivity and sensitivity toward the oxidation of ascorbic acid, dopamine and uric acid, resulting the simultaneous detection of these molecules. The biosensor applied to untreated serum samples resulted good recovery values and it differentiated ascorbic acid, dopamine and uric acid in a high sensitivity and selectivity. The peak separations between ascorbic acid, dopamine and uric acid were 148 mV and 133 mV, respectively.en_US
dc.language.isoengen_US
dc.publisherELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLANDen_US
dc.relation.isversionof10.1016/j.matchemphys.2019.02.043en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectGraphene; poly(o-phenylenediamine); Nanocomposite; Electrochemistry; Dopamineen_US
dc.titleHighly sensitive and selective dopamine sensing in biological fluids with one-pot prepared graphene/poly(o-phenylenediamine) modified electrodesen_US
dc.typearticleen_US
dc.relation.journalMATERIALS CHEMISTRY AND PHYSICSen_US
dc.contributor.departmentOrdu Üniversitesien_US
dc.contributor.authorID0000-0002-8816-6763en_US
dc.identifier.volume228en_US
dc.identifier.startpage357en_US
dc.identifier.endpage362en_US
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