Separating carbon monoxide from chemically similar nitrogen gas is particularly challenging. Now, a flexible porous coordination polymer has been developed that recognizes carbon monoxide over nitrogen, with structural changes in the material leading to its accelerated adsorption.
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Walton, K. Recognizing the unrecognizable. Nature Chem 6, 277–278 (2014). https://doi.org/10.1038/nchem.1910
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DOI: https://doi.org/10.1038/nchem.1910