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Dynamic Covalent Self‐Assembly of Chloride‐ and Ion‐Pair‐Templated Cryptates
While supramolecular hosts capable of binding and transporting anions and ion pairs are now widely available, self‐assembled architectures are still rare, even though they offer an inherent mechanism for the release of the guest ion(s). In this work, we report the dynamic covalent self‐assembly of t...
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Published in: | Angewandte Chemie International Edition 2022-07, Vol.61 (28), p.e202201831-n/a |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | While supramolecular hosts capable of binding and transporting anions and ion pairs are now widely available, self‐assembled architectures are still rare, even though they offer an inherent mechanism for the release of the guest ion(s). In this work, we report the dynamic covalent self‐assembly of tripodal, urea‐based anion cryptates that are held together by two orthoester bridgeheads. These hosts exhibit affinity for anions such as Cl−, Br− or I− in the moderate range that is typically advantageous for applications in membrane transport. In unprecedented experiments, we were able to dissociate the Cs⋅Cl ion pair by simultaneously assembling suitably sized orthoester hosts around the Cs+ and the Cl− ion.
The combination of urea‐based diols and simple orthoesters allowed the dynamic covalent encapsulation of the chloride ion and the simultaneous encapsulation of both ions present in cesium chloride. |
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ISSN: | 1433-7851 1521-3773 1521-3773 |
DOI: | 10.1002/anie.202201831 |