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
Main Authors: Hollstein, Selina, Shyshov, Oleksandr, Hanževački, Marko, Zhao, Jie, Rudolf, Tamara, Jäger, Christof M., Delius, Max
Format: Article
Language:English
Subjects:
Anions
Assembling
Assembly
Chloride Binding
Host–Guest Chemistry
Ion Pairs
Molecular Dynamics
Self-Assembly
Urea
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cited_by cdi_FETCH-LOGICAL-c4681-f13efcf0294948808ad3829e741a0b8b11eb44275e1dfe8a18a3048dac50fc8a3
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container_start_page e202201831
container_title Angewandte Chemie International Edition
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creator Hollstein, Selina
Shyshov, Oleksandr
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Delius, Max
description 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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subjects Anions
Assembling
Assembly
Chloride Binding
Host–Guest Chemistry
Ion Pairs
Molecular Dynamics
Self-Assembly
Urea
title Dynamic Covalent Self‐Assembly of Chloride‐ and Ion‐Pair‐Templated Cryptates
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