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Cooperative Transport and Selective Extraction of Sulfates by a Squaramide-Based Ion Pair Receptor: A Case of Adaptable Selectivity

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dc.abstract.enThe use of a squaramide-based ion pair receptor offers a solution to the very challenging problem of extraction and transport of extremely hydrated sulfate salt. Herein we demonstrate for the first time that a neutral receptor is able not only to selectively extract but also to transport sulfates in the form of an alkali metal salt across membranes and to do so in a cooperative manner while overcoming the Hofmeister bias. This was made possible by an enhancement in anion binding promoted by cation assistance and by diversifying the stoichiometry of receptor complexes with sulfates and other ions. The existence of a peculiar 4:1 complex of receptor 2 with sulfates in solution was confirmed by UV-vis and 1H NMR titration experiments, DOSY and DLS measurements, and supported by solid-state X-ray measurements. By varying the separation technique and experimental conditions, it was possible to switch the depletion of the aqueous layer into extremely hydrophilic or less lipophilic salts, thus obtaining the desired selectivity.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWilczek, Marcin
dc.contributor.authorZaleskaya, Marta
dc.contributor.authorKarbarz, Marcin
dc.contributor.authorDobrzycki, Łukasz
dc.contributor.authorRomański, Jan
dc.date.accessioned2024-01-24T20:47:58Z
dc.date.available2024-01-24T20:47:58Z
dc.date.copyright2020-09-04
dc.date.issued2020
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number18
dc.description.versionFINAL_PUBLISHED
dc.description.volume59
dc.identifier.doi10.1021/ACS.INORGCHEM.0C02114
dc.identifier.issn0020-1669
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/103737
dc.identifier.weblinkhttp://pubs.acs.org/doi/pdf/10.1021/acs.inorgchem.0c02114
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofInorganic Chemistry
dc.relation.pages13749-13759
dc.rightsCC-BY
dc.sciencecloudnosend
dc.titleCooperative Transport and Selective Extraction of Sulfates by a Squaramide-Based Ion Pair Receptor: A Case of Adaptable Selectivity
dc.typeJournalArticle
dspace.entity.typePublication