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Highly Efficient, Tripodal Ion-Pair Receptors for Switching Selectivity between Acetates and Sulfates Using Solid–Liquid and Liquid–Liquid Extractions

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cris.lastimport.scopus2024-02-12T20:07:11Z
dc.abstract.enA tripodal, squaramide-based ion-pair receptor 1 was synthesized in a modular ashion, and 1H NMR and UV-vis studies revealed its ability to interact more eciently with nions with the assistance of cations. The reference tripodal anion receptor 2, lacking a crown ether unit, was found to lose the enhancement in anion binding induced by presence of cations. Besides the ability to bind anions in enhanced manner by the single armed” ion-pair receptor 3, the lack of multiple and prearranged binding sites resulted in its much lower anity towards anions than in the case of tripodal eceptors. Unlike with receptors 2 or 3, the high anity of 1 towards salts opens up the possibility of extracting extremely hydrophilic sulfate anions from aqueous to organic phase. The disparity in receptor 1 binding modes towards monovalent anions and divalent sulfates assures its selectivity towards sulfates over other lipophilic salts upon liquid–liquid extraction (LLE) and enables the Hofmeister bias to be overcome. By changing the extraction conditions from LLE to SLE (solid–liquid extraction), a switch of selectivity from sulfates to acetates was achieved. X-ray measurements support the ability of anion binding by cooperation of the arms of receptor 1 together with simultaneous binding of cations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorZaleskaya, Marta
dc.contributor.authorDobrzycki, Łukasz
dc.contributor.authorRomański, Jan
dc.date.accessioned2024-01-25T03:11:33Z
dc.date.available2024-01-25T03:11:33Z
dc.date.copyright2020-12-12
dc.date.issued2020
dc.description.accesstimeAT_PUBLICATION
dc.description.financeŚrodki finansowe, o których mowa w art. 365 pkt. 2 ustawy
dc.description.number24
dc.description.versionFINAL_PUBLISHED
dc.description.volume21
dc.identifier.doi10.3390/IJMS21249465
dc.identifier.issn1422-0067
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/108476
dc.identifier.weblinkhttps://www.mdpi.com/1422-0067/21/24/9465/pdf
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofInternational Journal of Molecular Sciences
dc.relation.pages9465
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enanion recognition
dc.subject.encation recognition
dc.subject.enion pair receptors
dc.subject.enhost-guest interactions
dc.subject.ensquaramide
dc.subject.encrown ether
dc.titleHighly Efficient, Tripodal Ion-Pair Receptors for Switching Selectivity between Acetates and Sulfates Using Solid–Liquid and Liquid–Liquid Extractions
dc.typeJournalArticle
dspace.entity.typePublication