A Cr(VI) selective probe based on a quinoline-amide calix[4]arene

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dc.citation.volume189
dc.contributor.authorFerreira, Juliane F. [UNIFESP]
dc.contributor.authorBagatin, Izilda A. [UNIFESP]
dc.coverageOxford
dc.date.accessioned2020-07-08T13:09:52Z
dc.date.available2020-07-08T13:09:52Z
dc.date.issued2018
dc.description.abstractA new quinoline-amide calix[4]arene 3-receptor for detection of hazardous anions and cations have been synthesized. The 3-receptor was examined for its sensing properties towards several different anions (Cr2O72-, SCN-, F-, Cl-, N-3(-)) and metal ions (Hg2+, Cd2+, Ag+) by UV-vis and fluorescence spectroscopies. It was detected that the 3-receptor has only sensing ability for Cr2O73- and Hg2+ ions, resulting in the association constants higher for Cr2O73- than to the Hg2+ ions. High selectivity towards Cr2O73- were also observed by fluorescence measurement among other ions (F-, SCN-, Hg2+, Cd2+, Ag+) with a low limit of detection (7.36 x 10(-6) mol dm(-3)). Proton NMR anion-binding investigations revealed a strong interaction of Cr2O73- anion with NH and CH groups of the receptor, showing that the combination with hydrogen-bonds donor groups strengthened the anion receptor association. Furthermore, remarkable association constants for dichromate anion obtained by all techniques strongly suggest the 3-receptor as a selective Cr(VI) sensor. (C) 2017 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Dept Quim, Lab Quim Calixarenos Espect Mol & Catalise, Rua Prof Arthur Riedel 275, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Dept Quim, Lab Quim Calixarenos Espect Mol & Catalise, Rua Prof Arthur Riedel 275, BR-09972270 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP
dc.description.sponsorshipIDFAPESP: 2015/20485-4
dc.format.extent44-50
dc.identifierhttp://dx.doi.org/10.1016/j.saa.2017.07.056
dc.identifier.citationSpectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy. Oxford, v. 189, p. 44-50, 2018.
dc.identifier.doi10.1016/j.saa.2017.07.056
dc.identifier.issn1386-1425
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54266
dc.identifier.wosWOS:000413607000007
dc.language.isoeng
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofSpectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectHazardous anionsen
dc.subjectDichromateen
dc.subjectQuinolineen
dc.subjectSensoren
dc.subjectHydrogen-bondsen
dc.subjectMercuryen
dc.titleA Cr(VI) selective probe based on a quinoline-amide calix[4]areneen
dc.typeinfo:eu-repo/semantics/article
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