A Chloro-Bridged Linear Chain Imine-Copper(II) Complex and Its Application as an Enzyme-Free Amperometric Biosensor for Hydrogen Peroxide

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dc.contributor.authorAlves, Wendel A.
dc.contributor.authorMatos, Iorquirene O.
dc.contributor.authorTakahashi, Pedro M.
dc.contributor.authorBastos, Erick L.
dc.contributor.authorMartinho, Herculano
dc.contributor.authorFerreira, Janaina G.
dc.contributor.authorSilva, Claudia C.
dc.contributor.authorde Almeida Santos, Regina H.
dc.contributor.authorPaduan-Filho, Armando
dc.contributor.authorDa Costa Ferreira, Ana M.
dc.contributor.institutionUniversidade Federal do ABC (UFABC)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Estado Amazonas
dc.date.accessioned2014-05-20T15:30:33Z
dc.date.available2014-05-20T15:30:33Z
dc.date.issued2009-05-01
dc.description.abstractThe synthesis, structural characterisation and magnetic properties of a new chloro-bridged linear chain imine-copper(II) compound are reported. The results indicate that uniform chains are formed by stacking of parallel pyramidal units formed from the copper centre coordinated to the imine ligands and bridged by chloride ions, with the uncoordinated perchlorate ions located between the layers to balance the charge. Magnetic measurements carried out on a powder sample at temperatures from 1.8 to 290 K and a field of 500 Oe, indicated an intramolecular magnetic coupling between the copper centres [J/k = (-12.3 +/- 0.2) K]. Moreover, an antiferromagnetic interaction can also be observed between the polynuclear arrays [J' z/k = -(10.4 +/- 1.7) K]. An analysis of the sample at high temperature indicated that the overall interaction would be antiferromagnetic (Theta(CW) = -14 K). Furthermore, this new inorganic-organic zigzag polymer was linked covalently to the poly (N-vinylimidazole) polymer, PVI, on a vitreous carbon electrode surface and used as a biomimetic material for the efficient analytical determination of hydrogen peroxide. Raman spectroscopy and electrochemical techniques were used to give a complete characterisation of the hybrid film obtained. The proposed enzyme-free biosensor for catalase-like activity exhibited good sensitivity (268 mA mol(-1) L cm(-2)) at -0.4V relative to the. SCE in a phosphate buffer solution (pH 7.0) and a wide linear range from 1 to 30 mmol L(-1) for hydrogen peroxide detection. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)en
dc.description.affiliationUniversidade Federal do ABC (UFABC), Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Quim São Carlos, São Carlos, SP, Brazil
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Estado Amazonas, BR-69065020 Manaus, Amazonas, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, BR-01498 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Quim, BR-05513970 São Paulo, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 05/60596-8
dc.description.sponsorshipIdFAPESP: 07/50968-0
dc.description.sponsorshipIdCNPq: 555592/2006-5
dc.description.sponsorshipIdCNPq: 301018/2006-5
dc.description.sponsorshipIdFAPESP: 08/51074-6
dc.format.extent2219-2228
dc.identifierhttp://dx.doi.org/10.1002/ejic.200801218
dc.identifier.citationEuropean Journal of Inorganic Chemistry. Weinheim: Wiley-v C H Verlag Gmbh, n. 15, p. 2219-2228, 2009.
dc.identifier.doi10.1002/ejic.200801218
dc.identifier.issn1434-1948
dc.identifier.urihttp://hdl.handle.net/11449/39903
dc.identifier.wosWOS:000266579800002
dc.language.isoeng
dc.publisherWiley-v C H Verlag Gmbh
dc.relation.ispartofEuropean Journal of Inorganic Chemistry
dc.relation.ispartofjcr2.507
dc.relation.ispartofsjr0,828
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSensorsen
dc.subjectEnzyme-free biosensorsen
dc.subjectHydrogen peroxide detectionen
dc.subjectCopper(II) complexesen
dc.subjectStructural characterizationen
dc.subjectMagnetic propertiesen
dc.titleA Chloro-Bridged Linear Chain Imine-Copper(II) Complex and Its Application as an Enzyme-Free Amperometric Biosensor for Hydrogen Peroxideen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-v C H Verlag Gmbh

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