Dynamic mechanostereochemical switching of a co-conformationally flexible [2]catenane controlled by specific ionic guests

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Abstract

Responsive synthetic receptors for adaptive recognition of different ionic guests in a competitive environment are valuable molecular tools for not only ion sensing and transport, but also the development of ion-responsive smart materials and related technologies. By virtue of the mechanical chelation and ability to undergo large-amplitude co-conformational changes, described herein is the discovery of a chameleon-like [2]catenane that selectively binds copper(I) or sulfate ions and its associated co-conformational mechanostereochemical switching. This work highlights not only the advantages and versatility of catenane as a molecular skeleton in receptor design, but also its potential in constructing complex responsive systems with multiple inputs and outputs.

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Yao, Y., Tse, Y. C., Lai, S. K. M., Shi, Y., Low, K. H., & Au-Yeung, H. Y. (2024). Dynamic mechanostereochemical switching of a co-conformationally flexible [2]catenane controlled by specific ionic guests. Nature Communications, 15(1). https://doi.org/10.1038/s41467-024-46099-w

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