Spectrofluorimetric study of phenolic endocrine disruptors in cyclodextrin media

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dc.citation.titleRSC Advancesen
dc.citation.volume5
dc.creatorPellegrino Vidal, Rocío Laura
dc.creatorIbañez, Gabriela Alejandra
dc.creatorEscandar, Graciela Mónica
dc.date.accessioned2018-06-13T17:08:24Z
dc.date.available2018-06-13T17:08:24Z
dc.date.issued2015-02-12
dc.descriptionThis study focuses on the spectrofluorimetric behavior of bisphenol A (BPA), 4-octylphenol (OP) and 4-nonylphenol (NP) in the presence of native and derivative cyclodextrins (CDs). The weak fluorescence emission bands of these endocrine disrupting compounds in aqueous media are significantly enhanced by β-CD and its hydroxyethyl-, hydropropyl, methyl-, and heptakis(2,6-di-o-methyl)-derivatives. A 1 : 1 guest : host stoichiometry for most complexes is established, although the additional presence of weak 1 : 2 complexes is suggested in both BPA–hydroxyethyl–β-CD and BPA–heptakis(2,6-di-o-methyl)–β-CD systems. The association constants are calculated by applying a non-linear regression method to the changes brought about by the presence of each CD in the corresponding fluorescence spectra, and these values are corroborated using a Benesi–Hildebrand type equation. The participation of the CD substituents in the inclusion phenomenon is indirectly demonstrated through the comparison of the acidity constant values in the absence and in the presence of β-CD derivatives. On the basis of 1H-NMR studies, possible structures of the formed complexes are suggested, and the structural information is supplemented by AM1 semiempirical calculations. The potential of the studied complexes in relation to their use for analytical purposes and/or for environmental remediation is discussed.es
dc.description.filFil: Pellegrino Vidal, Rocío Laura. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.es
dc.description.filFil: Ibañez, Gabriela Alejandra. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.es
dc.description.filFil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina.es
dc.description.sponsorshipUniversidad Nacional de Rosarioes
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET): Project PIP 0163es
dc.description.sponsorshipAgencia Nacional de Promoción Científica y Tecnológica (ANPCyT): PICT 2013-0136es
dc.formatapplication/pdf
dc.format.extent20914-20923
dc.identifier.issn2046-2069
dc.identifier.urihttp://hdl.handle.net/2133/11447
dc.language.isoenges
dc.publisherRoyal Society of Chemistryes
dc.relation.publisherversionhttp://pubs.rsc.org/en/content/articlelanding/2015/ra/c4ra13023e#!divAbstractes
dc.relation.publisherversionhttp://dx.doi.org/10.1039/C4RA13023Ees
dc.rightsopenAccesses
dc.rights.holderEscandar, Graciela Mónicaes
dc.rights.holderIbañez, Gabriela Alejandraes
dc.rights.holderPellegrino Vidal, Rocío Lauraes
dc.rights.holderUniversidad Nacional de Rosarioes
dc.rights.holderRoyal Society of Chemistryes
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/2.5/ar/*
dc.subjectCyclodextrines
dc.subjectPhenolses
dc.subjectFluorescencees
dc.subjectEndocrine Disruptorses
dc.titleSpectrofluorimetric study of phenolic endocrine disruptors in cyclodextrin mediaes

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