Show simple item record

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.identifier.citationBiomacromolecules. Washington: Amer Chemical Soc, v. 8, n. 11, p. 3408-3413, 2007.
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.publisherAmer Chemical Soc
dc.sourceWeb of Science
dc.titleNatural gum-assisted phthalocyanine immobilization in electroactive nanocomposites: Physicochemical characterization and sensing applicationsen
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.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, Presidente Prudentept[4][9][7][5][4]
Localize o texto completo

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record