Hybrid graphene oxide/DAB-Am-16 dendrimer: Preparation, characterization chemical reactivity and their electrocatalytic detection of L-Dopamine

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dc.contributor.authorDo Carmo, Devaney Ribeiro [UNESP]
dc.contributor.authorFernandes, Daniela Silvestrini [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:13:17Z
dc.date.available2018-12-11T17:13:17Z
dc.date.issued2017-09-01
dc.description.abstractGraphene oxide (GO) was chemically modified with a poly(propylene)imine Generation 3.0 dendrimer (DAB-Am-16). The characterization, structure and properties of hybrid graphene oxide/DAB-Am-16 dendrimer was studied by Raman spectroscopy, Fourier-Transforming Infrared Spectroscopy (FT-IR), X-Ray Photoelectron Spectroscopic (XPS), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis. After functionalized the hybrid material (GOD) can interact with copper and subsequently with hexacyanoferrate (III) ions (GODHCu). The GODHCu incorporated into a graphite paste electrode (20% w/w) was applied to an electrocatalytic detection of neurotransmitter L-dopamine using differential pulse voltammetry. The analytical curve showed a linear response in the concentration range from 1.0 × 10−7 to 1.0 × 10−5 mol L−1 with a corresponding equation Y(A) = 1.706 × 10−5 + 0.862 [L-dopamine] and a correlation coefficient r2 = 0.998. The detection limit was 6.36 × 10−7 mol L−1 with a relative standard deviation of ±4% (n = 3) and an amperometric sensitivity of 0.862 A/mol L−1.en
dc.description.affiliationFaculdade de Engenharia de Ilha Solteira UNESP – Univ. Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56
dc.description.affiliationUnespFaculdade de Engenharia de Ilha Solteira UNESP – Univ. Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2015/20397
dc.format.extent33-41
dc.identifierhttp://dx.doi.org/10.1016/j.solidstatesciences.2017.07.005
dc.identifier.citationSolid State Sciences, v. 71, p. 33-41.
dc.identifier.doi10.1016/j.solidstatesciences.2017.07.005
dc.identifier.file2-s2.0-85022334927.pdf
dc.identifier.issn1293-2558
dc.identifier.scopus2-s2.0-85022334927
dc.identifier.urihttp://hdl.handle.net/11449/174881
dc.language.isoeng
dc.relation.ispartofSolid State Sciences
dc.relation.ispartofsjr0,574
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectChemical synthesis
dc.subjectElectrochemical measurements
dc.subjectElectrochemical properties
dc.subjectPhotoelectron spectroscopy
dc.subjectRaman spectroscopy
dc.subjectSurfaces
dc.titleHybrid graphene oxide/DAB-Am-16 dendrimer: Preparation, characterization chemical reactivity and their electrocatalytic detection of L-Dopamineen
dc.typeArtigo

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