A chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygen

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dc.contributor.authorPereira, Camila F. [UNESP]
dc.contributor.authorOlean-Oliveira, André [UNESP]
dc.contributor.authorDavid-Parra, Diego N. [UNESP]
dc.contributor.authorTeixeira, Marcos F.S. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:21:56Z
dc.date.available2018-12-11T17:21:56Z
dc.date.issued2018-12-01
dc.description.abstractA resistance detection device for dissolved molecular oxygen in aqueous solutions is prepared using a chemiresistor material as sensor platform. The chemiresistive circuit element is fashioned from a thin film of a cobalt-salen metallopolymer electrodeposited on a platinum electrode. Electrochemical impedance spectroscopy shows that the resistive and capacitive properties of the sensor platform depend on the presence of dissolved oxygen. The electrical circuit models are R(Q/R)(Q/R) and R(Q/R)(Q/RW) in the absence and presence of oxygen, respectively. The chemiresistor sensor exhibits good sensitivity (0.483 kΩ L mg−1), excellent reversibility and excellent linearity over a range of dissolved oxygen concentrations typically found under environmental conditions (2.72–40.9 mg L−1). The sensor fabricated in this work can potentially serve as an alternative sensor for the detection of dissolved oxygen in environmental samples.en
dc.description.affiliationDepartment of Chemistry and Biochemistry School of Science and Technology - Sao Paulo State University (UNESP), Rua Roberto Simonsen 305, CEP 19060-900
dc.description.affiliationUnespDepartment of Chemistry and Biochemistry School of Science and Technology - Sao Paulo State University (UNESP), Rua Roberto Simonsen 305, CEP 19060-900
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCNPq: 113827/2012-1
dc.description.sponsorshipIdFAPESP: 2016/09017-1
dc.format.extent119-125
dc.identifierhttp://dx.doi.org/10.1016/j.talanta.2018.07.080
dc.identifier.citationTalanta, v. 190, p. 119-125.
dc.identifier.doi10.1016/j.talanta.2018.07.080
dc.identifier.file2-s2.0-85050755625.pdf
dc.identifier.issn0039-9140
dc.identifier.scopus2-s2.0-85050755625
dc.identifier.urihttp://hdl.handle.net/11449/176651
dc.language.isoeng
dc.relation.ispartofTalanta
dc.relation.ispartofsjr1,186
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectChemical sensor
dc.subjectElectrochemical device
dc.subjectImpedance
dc.subjectMetallopolymer
dc.subjectResistive sensor
dc.titleA chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygenen
dc.typeArtigo
unesp.author.orcid0000-0001-9355-2143[4]
unesp.departmentEstatística - FCTpt

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