Spectrofluorimetric study of phenolic endocrine disruptors in cyclodextrin media

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dc.creator Pellegrino Vidal, Rocío Laura
dc.creator Ibañez, Gabriela Alejandra
dc.creator Escandar, Graciela Mónica
dc.date.accessioned 2018-06-13T17:08:24Z
dc.date.available 2018-06-13T17:08:24Z
dc.date.issued 2015-02-12
dc.identifier.issn 2046-2069
dc.identifier.uri http://hdl.handle.net/2133/11447
dc.description This 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.sponsorship Universidad Nacional de Rosario es
dc.description.sponsorship Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET): Project PIP 0163 es
dc.description.sponsorship Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT): PICT 2013-0136 es
dc.format application/pdf
dc.format.extent 20914-20923
dc.language.iso eng es
dc.publisher Royal Society of Chemistry es
dc.rights openAccess es
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ *
dc.subject Cyclodextrin es
dc.subject Phenols es
dc.subject Fluorescence es
dc.subject Endocrine Disruptors es
dc.title Spectrofluorimetric study of phenolic endocrine disruptors in cyclodextrin media es
dc.rights.holder Escandar, Graciela Mónica es
dc.rights.holder Ibañez, Gabriela Alejandra es
dc.rights.holder Pellegrino Vidal, Rocío Laura es
dc.rights.holder Universidad Nacional de Rosario es
dc.rights.holder Royal Society of Chemistry es
dc.relation.publisherversion http://pubs.rsc.org/en/content/articlelanding/2015/ra/c4ra13023e#!divAbstract es
dc.relation.publisherversion http://dx.doi.org/10.1039/C4RA13023E es
dc.citation.title RSC Advances en
dc.citation.volume 5
dc.description.fil Fil: Pellegrino Vidal, Rocío Laura. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. es
dc.description.fil Fil: Ibañez, Gabriela Alejandra. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. es
dc.description.fil Fil: Escandar, Graciela Mónica. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Química Rosario (IQUIR-CONICET); Argentina. es


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