Synthesis of tetra-substituted calix[4]arene ionophores and their recognition studies toward toxic arsenate anions

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dc.contributor.authorBayrakci, Mevlut
dc.contributor.authorYigiter, Sengul
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2013
dc.departmentNiğde ÖHÜ
dc.description.abstractThe article displays the synthesis of a family of novel tetra-substituted calix[4]arene ionophores bearing furyl, phenyl, and pyridyl units in the cone conformation. In the synthesis, the lower rims of calix[4]arene scaffold were modified in order to establish the influence of the molecular structure of calixarene on recognition of toxic anions as arsenate by liquid-liquid extraction process. In addition, the effects of solvent, solution conditions (mainly pH), and counter ions (Cl-, NO3-, and SO42-) on the extraction abilities of the ionophores were studied. From the liquid-liquid phase extraction studies, it was observed that the structures of the tetra-substituted calix[4]arenes influenced the extraction percentage of selected toxic anion. Also, thermodynamic parameters, such as the free energy (Delta G degrees) and enthalpy (Delta H degrees) indicated an exothermic nature of extraction and a spontaneous and favorable process. (C) 2013 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipSelcuk University; Nigde University Research Foundation (BAP)
dc.description.sponsorshipThe authors gratefully would like to thank Selcuk University and Nigde University Research Foundation (BAP) for financial support.
dc.identifier.doi10.1016/j.tet.2013.02.050
dc.identifier.endpage3224
dc.identifier.issn0040-4020
dc.identifier.issue15
dc.identifier.scopus2-s2.0-84875216059
dc.identifier.scopusqualityQ2
dc.identifier.startpage3218
dc.identifier.urihttps://dx.doi.org/10.1016/j.tet.2013.02.050
dc.identifier.urihttps://hdl.handle.net/11480/4412
dc.identifier.volume69
dc.identifier.wosWOS:000316582400012
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofTETRAHEDRON
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCalixarene
dc.subjectAcetamide
dc.subjectArsenate
dc.subjectAnion recognition
dc.subjectLiquid-liquid extraction
dc.titleSynthesis of tetra-substituted calix[4]arene ionophores and their recognition studies toward toxic arsenate anions
dc.typeArticle

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