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Nanostructured films employed as sensing units in an electronic tongue system

dc.contributor.authorda Silva, B. A.
dc.contributor.authorAntunes, P. A.
dc.contributor.authorPasquini, D.
dc.contributor.authorCurvelo, A. A. S.
dc.contributor.authorAroca, R. F.
dc.contributor.authorRiul, A.
dc.contributor.authorConstantino, C. J. L.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade do Oeste Paulista (UNOESTE)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniv Windsor
dc.date.accessioned2014-05-20T15:21:50Z
dc.date.available2014-05-20T15:21:50Z
dc.date.issued2007-02-01
dc.description.abstractNanostructured films of lignin (macromolecule extracted from sugar cane bagasse), polypyrrole (conducting polymer) and bis butylimido perylene (organic dye) were used in the detection of trace levels of fluorine (from H2SiF6), chlorine (from NaCIO), Pb+2, Cu+2, and Cd+2 in aqueous solutions. Langmuir monolayers on ultrapure water were characterised by surface pressure-mean molecular area (II-A) isotherms. Langmuir-Blodgett (LB) films were transferred onto gold interdigitated electrodes and used as individual sensing units of an electronic tongue system. Impedance spectroscopy measurements were taken with the sensor immersed into aqueous solutions containing the ions described above in different molar concentrations. Fourier transform infrared absorption (FTIR) was employed to identify possible interactions between the LB films and the analytes in solution, and no significant changes could be observed in the FTIR spectra of BuPTCD and Ppy. Therefore, the results for lignin point to an interaction involving the electronic cloud of the phenyl groups with the metallic ions.en
dc.description.affiliationUniv Fed Sao Carlos, BR-18043970 Sorocaba, SP, Brazil
dc.description.affiliationUNESP, FCT, DFQT, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUNOESTE, Fac Ciências Letras & Educ, BR-19050900 Presidente Prudente, SP, Brazil
dc.description.affiliationUSP, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUniv Windsor, Mat & Surface Sci Grp, Windsor, ON N9B 3P4, Canada
dc.description.affiliationUnespUNESP, FCT, DFQT, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent510-514
dc.identifierhttp://dx.doi.org/10.1166/jnn.2007.107
dc.identifier.citationJournal of Nanoscience and Nanotechnology. Stevenson Ranch: Amer Scientific Publishers, v. 7, n. 2, p. 510-514, 2007.
dc.identifier.doi10.1166/jnn.2007.107
dc.identifier.issn1533-4880
dc.identifier.urihttp://hdl.handle.net/11449/32928
dc.identifier.wosWOS:000243514900018
dc.language.isoeng
dc.publisherAmer Scientific Publishers
dc.relation.ispartofJournal of Nanoscience and Nanotechnology
dc.relation.ispartofjcr1.354
dc.relation.ispartofsjr0,326
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectLangmuir-Blodgett filmspt
dc.subjectimpedance spectroscopypt
dc.subjectsensorpt
dc.titleNanostructured films employed as sensing units in an electronic tongue systemen
dc.typeArtigo
dcterms.licensehttp://www.aspbs.com/terms.htm
dcterms.rightsHolderAmer Scientific Publishers
dspace.entity.typePublication
unesp.author.lattes6118325967319836[7]
unesp.author.orcid0000-0002-9760-1851[6]
unesp.author.orcid0000-0002-5921-3161[7]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, Presidente Prudentept
unesp.departmentFísica, Química e Biologia - FCTpt

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