The catalytic activity of a rotaxane incorporating a gold(I) centre can be switched on by the addition of a guest ion that can bind inside the macrocyclic cavity of the system. The nature of the guest can also influence the selectivity of the catalyst, reminiscent of allosteric modulation in enzymes.
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Lee, AL. A rotaxane with the golden touch. Nature Chem 8, 8–9 (2016). https://doi.org/10.1038/nchem.2403
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DOI: https://doi.org/10.1038/nchem.2403
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