Nanostructured films of perylene derivatives: High performance materials for taste sensor applications

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dc.contributor.authorConstantino, C. J L [UNESP]
dc.contributor.authorAntunes, P. A. [UNESP]
dc.contributor.authorVenancio, E. C.
dc.contributor.authorConsolin, N.
dc.contributor.authorFonseca, F. J.
dc.contributor.authorMattoso, L. H C
dc.contributor.authorAroca, R. F.
dc.contributor.authorOliveira, O. N.
dc.contributor.authorRiul, A. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversity of Windsor
dc.date.accessioned2014-05-27T11:21:05Z
dc.date.available2014-05-27T11:21:05Z
dc.date.issued2004-06-01
dc.description.abstractFour perylene derivatives (PTCD) have been used as transducing materials in taste sensors fabricated with nanostructured Langmuir-Blodgett (LB) films deposited onto interdigitated gold electrodes. The Langmuir monolayers of PTCDs display considerable collapse pressures, with areas per molecule indicative of an edge-on or head-on arrangement for the molecules at the air/water interface. The sensing units for the electronic tongue were produced from 5-layer LB films of the four PTCDs, whose electrical response was characterized with impedance spectroscopy. The distinct responses of the PTCDs, attributed to differences in their molecular structures, allowed one to obtain a finger printing system that was able to distinguish tastes (salty, sweet, bitter and sour) at 1 μM concentrations, which, in some cases, are three orders of magnitude below the human threshold. Using Principal Component Analysis (PCA) data analysis, the electronic tongue also detected trace amounts of a pesticide and could distinguish among samples of ultrapure, distilled and tap water, and two brands of mineral water. © 2004 by American Scientific Publishers. All rights reserved.en
dc.description.affiliationDepartamento de Física Química e Biologia FCT-UNESP, Presidente Prudente, SP 19060-900
dc.description.affiliationEMBRAPA Instrumentacao Agropecuaria, São Carlos, SP 13560-970
dc.description.affiliationEscola Politécnica USP, São Paulo, SP 05508-900
dc.description.affiliationInstituto de Fisica de Sao Carlos USP, São Carlos, SP 13560-970
dc.description.affiliationChemistry Department University of Windsor, Windsor, Ont. N9B 3P4
dc.description.affiliationUnespDepartamento de Física Química e Biologia FCT-UNESP, Presidente Prudente, SP 19060-900
dc.format.extent95-101
dc.identifierhttp://www.ingentaconnect.com/content/asp/senlet/2004/00000002/00000002/art00003
dc.identifier.citationSensor Letters, v. 2, n. 2, p. 95-101, 2004.
dc.identifier.doi10.1166/s1.2004.030
dc.identifier.issn1546-198X
dc.identifier.scopus2-s2.0-8344251999
dc.identifier.urihttp://hdl.handle.net/11449/67745
dc.identifier.wosWOS:000234765700003
dc.language.isoeng
dc.relation.ispartofSensor Letters
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectElectronic tongue
dc.subjectLangmuir-Blodgett
dc.subjectPerylene
dc.subjectSensors
dc.subjectThin films
dc.subjectDyes
dc.subjectElectrodes
dc.subjectInterfaces (materials)
dc.subjectIsotherms
dc.subjectLangmuir Blodgett films
dc.subjectMolecular structure
dc.subjectNanostructured materials
dc.subjectPesticides
dc.subjectPrincipal component analysis
dc.subjectSpectroscopy
dc.subjectImpedance spectroscopy
dc.subjectNanostructured films
dc.subjectOrganic dyes
dc.subjectTaste sensor
dc.titleNanostructured films of perylene derivatives: High performance materials for taste sensor applicationsen
dc.typeArtigo
dcterms.licensehttp://www.aspbs.com/terms.htm
unesp.author.lattes6118325967319836[1]
unesp.author.orcid0000-0002-9760-1851[9]
unesp.author.orcid0000-0001-7586-1014[6]
unesp.author.orcid0000-0002-5399-5860[8]
unesp.author.orcid0000-0002-5921-3161[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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