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dc.contributor.authorZampa, Maysa F.
dc.contributor.authorde Brito, Ana Cristina F.
dc.contributor.authorKitagawa, Igor L.
dc.contributor.authorConstantino, Carlos J. L.
dc.contributor.authorOliveira, Osvaldo N.
dc.contributor.authorda Cunha, Helder N.
dc.contributor.authorZucolotto, Valtencir
dc.contributor.authordos Santos, Jose Ribeiro
dc.contributor.authorEiras, Carla
dc.date.accessioned2014-05-20T15:28:50Z
dc.date.available2014-05-20T15:28:50Z
dc.date.issued2007-11-01
dc.identifierhttp://dx.doi.org/10.1021/bm700528u
dc.identifier.citationBiomacromolecules. Washington: Amer Chemical Soc, v. 8, n. 11, p. 3408-3413, 2007.
dc.identifier.issn1525-7797
dc.identifier.urihttp://hdl.handle.net/11449/38568
dc.description.abstractNatural gums have been traditionally applied in cosmetics and the food industry, mainly as emulsification agents. Due to their biodegradability and excellent mechanical properties, new technological applications have been proposed involving their use with conventional polymers forming blends and composites. In this study, we take advantage of the polyelectrolyte character exhibited by the natural gum Chicha (Sterculia striata), extracted in the Northeastern region of Brazil, to produce electroactive nanocomposites. The nanocomposites were fabricated in the form of ultrathin films by combining a metallic phthalocyanine (nickel tetrasulfonated phthalocyanine, NiTsPc) and the Chicha gum in a tetralayer architecture, in conjunction with conventional polyelectrolytes. The presence of the gum led to an efficient adsorption of the phthalocyanine and enhanced the electrochemical response of the films. Upon combining the electrochemical and UV-vis absorption data, energy diagrams of the Chicha/NiTsPc-based system were obtained. Furthermore, modified electrodes based on gum/phthalocyanine films were able to detect dopamine at concentrations as low as 10(-5) M.en
dc.format.extent3408-3413
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofBiomacromolecules
dc.sourceWeb of Science
dc.titleNatural gum-assisted phthalocyanine immobilization in electroactive nanocomposites: Physicochemical characterization and sensing applicationsen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/paragonplus/copyright/jpa_form_a.pdf
dcterms.rightsHolderAmer Chemical Soc
dc.contributor.institutionUniversidade Federal do Piauí (UFPI)
dc.contributor.institutionUniversidade Federal do Ceará (UFC)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.description.affiliationUniv Fed Piaui, CCN, DQ & DF, BR-64049 Teresina, Brazil
dc.description.affiliationUniv Fed Ceara, DQ, BR-60455760 Fortaleza, Ceara, Brazil
dc.description.affiliationUNESP, DFQB, FCT, Presidente Prudente, SP, Brazil
dc.description.affiliationUSP, IFSC, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUNESP, DFQB, FCT, Presidente Prudente, SP, Brazil
dc.identifier.doi10.1021/bm700528u
dc.identifier.wosWOS:000250960300017
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, Presidente Prudentept
unesp.author.lattes6118325967319836[4]
unesp.author.orcid0000-0001-8861-774X[9]
unesp.author.orcid0000-0003-4307-3077[7]
unesp.author.orcid0000-0002-5399-5860[5]
unesp.author.orcid0000-0002-5921-3161[4]
dc.relation.ispartofjcr5.738
dc.relation.ispartofsjr1,950
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