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Electrochemistry of new derivatives of phenothiazine: Electrode kinetics and electropolymerization conditions

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dc.contributor.author Kuzin Y.I.
dc.contributor.author Khadieva A.I.
dc.contributor.author Padnya P.L.
dc.contributor.author Khannanov A.A.
dc.contributor.author Kutyreva M.P.
dc.contributor.author Stoikov I.I.
dc.contributor.author Evtugyn G.A.
dc.date.accessioned 2022-02-09T20:30:52Z
dc.date.available 2022-02-09T20:30:52Z
dc.date.issued 2021
dc.identifier.issn 0013-4686
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/168672
dc.description.abstract Electrochemical properties of two new derivatives of phenothiazine, i.e., 3,7-bis(4-aminophenylamino)phenothiazin-5-ium chloride (PhTz-(NH2)2) and 3,7-bis(4-carboxyphenylamino)phenothiazin-5-ium chloride (PhTz-(COOH)2), has been investigated on glassy carbon electrode. The pH influence on their electrode reactions was specified. The compounds studied showed complex kinetics of electrode reactions. Heterogeneous constants of the electron transfer at pH = 7.0 calculated from the Tafel plot were equal to 8.3 × 10−4 and 7.4 × 10−4 cm s−1 and transfer coefficients to 0.52 and 0.36 for PhTz-(NH2)2 and PhTz-(COOH)2, respectively. For carboxylate derivative, significant influence of the pH of working solution on the transfer coefficient was mentioned. Based on cyclic voltammetry, quartz crystal microbalance and spectroscopy of electrochemical impedance, deposition of oxidation products was found for PhTz-(NH2)2 and PhTz-(COOH)2 in multiple potential cycling. The carboxylic groups critically influenced electropolymerization of appropriate compound. The formation of bonds typical for electropolymerization was also confirmed by diffusion reflectance IR spectra. The electropolymerization product exerted high electrochemical activity within a broad pH range. Heterogeneous rate constant of the electropolymerized product was found to be 4.5 × 10−1 s−1.
dc.relation.ispartofseries Electrochimica Acta
dc.subject P H dependence of redox activity
dc.subject Electropolymerization
dc.subject Enothiazines
dc.title Electrochemistry of new derivatives of phenothiazine: Electrode kinetics and electropolymerization conditions
dc.type Article
dc.relation.ispartofseries-volume 375
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00134686-2021-375-SID85103330099


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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