Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Electrochemical Study of Flavins, Phenazines, Phenoxazines and Phenothiazines Immobilized on Zirconium Phosphate

1999; Wiley; Volume: 11; Issue: 10-11 Linguagem: Inglês

10.1002/(sici)1521-4109(199907)11

1521-4109

Lauro T. Kubota, Lo Gorton,

Conducting polymers and applications

ElectroanalysisVolume 11, Issue 10-11 p. 719-728 Article Electrochemical Study of Flavins, Phenazines, Phenoxazines and Phenothiazines Immobilized on Zirconium Phosphate L. T. Kubota, L. T. Kubota Instituto de Química, Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, BrazilSearch for more papers by this authorL. Gorton, L. Gorton Department of Analytical Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, SwedenSearch for more papers by this author L. T. Kubota, L. T. Kubota Instituto de Química, Unicamp, P.O. Box 6154, 13083-970, Campinas, SP, BrazilSearch for more papers by this authorL. Gorton, L. Gorton Department of Analytical Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, SwedenSearch for more papers by this author First published: 09 September 1999 https://doi.org/10.1002/(SICI)1521-4109(199907)11:10/11 3.0.CO;2-SCitations: 72AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Adsorption of a number of flavins, phenazines, phenoxazines, and phenothiazines on zirconium phosphate (ZP) was carried out in aqueous solution. The adsorbed organic dyes on ZP were used to prepare modified carbon paste electrodes. The electrochemical properties of the immobilized dyes were investigated and also their possible use to electrocatalytically oxidize NADH. The formal potential (E0′) of most of the adsorbed flavins, phenoxazines, and phenothiazines shifted markedly towards more positive potentials compared with their values in solution. The pH of the contacting solution did not affect their E0′-values between pH 1 and 9. The phenazines did neither present good electrochemical response nor electrocatalytic activity for NADH oxidation and their E0′-values remained pH dependent. In contrast, adsorbed flavins, phenoxazines, and phenothiazines presented good electron transfer rates between the electrode and the adsorbed molecule dye at pH 7.0. Citing Literature Volume11, Issue10-11July 1999Pages 719-728 RelatedInformation