Please use this identifier to cite or link to this item: http://earsiv.odu.edu.tr:8080/xmlui/handle/11489/2499
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dc.contributor.authorAbaci, Serdar-
dc.contributor.authorBolat, Gulcin-
dc.contributor.authorCirak, Tamer-
dc.contributor.authorDenkbas, Emir Baki-
dc.contributor.authorKuralay, Filiz-
dc.contributor.authorPala, Betul Bozdogan-
dc.contributor.authorVural, Tayfun-
dc.date.accessioned2022-08-17T06:26:41Z-
dc.date.available2022-08-17T06:26:41Z-
dc.date.issued2014-
dc.identifier.urihttp://doi.org/10.1016/j.apsusc.2014.02.039-
dc.identifier.urihttp://earsiv.odu.edu.tr:8080/xmlui/handle/11489/2499-
dc.description.abstractIn this study, peptide nanostructures from diphenylalanine were synthesized in various solvents with various polarities and characterized with Scanning Electron Microscopy (SEM) and Powder X-ray Diffraction (PXRD) techniques. Formation of peptide nanofibrils, nanovesicles, nanoribbons, and nanotubes was observed in different solvent mediums. In order to investigate the effects of peptide nanotubes (PNT) on electrochemical behavior of disposable pencil graphite electrodes (PGE), electrode surfaces were modified with fabricated peptide nanotubes. Electrochemical activity of the pencil graphite electrode was increased with the deposition of PNTs on the surface. The effects of the solvent type, the peptide nanotube concentration, and the passive adsorption time of peptide nanotubes on pencil graphite electrode were studied. For further electrochemical studies, electrodes were modified for 30 min by immobilizing PNTs, which were prepared in water at 6 mg/mL concentration. Vitamin B-12 analyses were performed by the Square Wave (SW) voltammetry method using modified PGEs. The obtained data showed linearity over the range of 0.2 mu M and 9.50 mu M Vitamin B-12 concentration with high sensitivity. Results showed that PNT modified PGEs were highly simple, fast, cost effective, and feasible for the electro-analytical determination of Vitamin B-12 in real samples. (C) 2014 Elsevier B.V. All rights reserved.en_US
dc.language.isoengen_US
dc.publisherELSEVIERRADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDSen_US
dc.relation.isversionof10.1016/j.apsusc.2014.02.039en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCARBON-PASTE ELECTRODENICOTINAMIDE ADENINE-DINUCLEOTIDEDIPHENYLALANINE PEPTIDESELFSENSORNANOCOMPOSITEVOLTAMMETRYFABRICATIONSTABILITYMEDIATORen_US
dc.subjectDiphenylalanineNanotubePencil graphite electrodeVitamin B-12en_US
dc.titleDisposable pencil graphite electrode modified with peptide nanotubes for Vitamin B-12 analysisen_US
dc.typearticleen_US
dc.relation.journalAPPLIED SURFACE SCIENCEen_US
dc.contributor.departmentOrdu Üniversitesien_US
dc.contributor.authorID0000-0001-9504-5532en_US
dc.contributor.authorID0000-0003-0356-9692en_US
dc.contributor.authorID0000-0003-0431-9919en_US
dc.contributor.authorID0000-0003-1546-3895en_US
dc.identifier.volume303en_US
dc.identifier.startpage37en_US
dc.identifier.endpage45en_US
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