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Issue 25, 2019
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Enhancing selectivity of cation exchange with anion receptors

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Abstract

We introduce a new supramolecular strategy where an anion receptor modifies the selectivity ligands for cations. This is demonstrated by combining the classic anion receptor calix[4]pyrrole (C4P) and a phenolic ligand, which leads to remarkable enhancement in selectivity for Cs+ over Na+. Crystal structures and molecular simulations confirmed the persistent formation of ion-pair C4P–Cs+–phenolate complexes, while the smaller Na+ ion cannot efficiently interact.

Graphical abstract: Enhancing selectivity of cation exchange with anion receptors

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Supplementary files

Article information


Submitted
11 Jan 2019
Accepted
05 Feb 2019
First published
13 Feb 2019

Chem. Commun., 2019,55, 3590-3593
Article type
Communication
Author version available

Enhancing selectivity of cation exchange with anion receptors

N. J. Williams, S. Roy, C. O. Reynolds, R. Custelcean, V. S. Bryantsev and B. A. Moyer, Chem. Commun., 2019, 55, 3590
DOI: 10.1039/C9CC00287A

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