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19+ hour, 51+ min ago (189+ words) A new metal'organic framework (MOF) selectively adsorbs two molecules of carbon monoxide at each metal site. The US-based researchers that developed it believe that the underlying chemistry may enable the design of MOFs that capture other gases with greater efficacy. The new MOF can bind two carbon monoxide molecules at each cobalt site MOFs were the focus of this year's Nobel prize in chemistry due to their ability to bind specific molecules, which makes them particularly useful for storage and filtration. In the vast majority of MOFs, each site in the framework can adsorb a maximum of one target molecule. The adsorption of one carbon monoxide molecule triggers a spin transition on the cobalt centre that facilitates the insertion of a second carbon monoxide between the metal and a methyl group that was directly bound to it The researchers are…...