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Selective Separation of Polyaromatic Hydrocarbons by Phase Transfer of Coordination Cages

par Zhang, Dawei;Ronson, Tanya;Lavendomme, Roy ;Nitschke, Jonathan
Référence Journal of the American Chemical Society, 141, 48, page (18949-18953)
Publication Publié, 2019-11-15

Article révisé par les pairs

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Résumé :

Here we report a new supramolecular strategy for the selective separation of specific polycyclic aromatic hydrocarbons (PAHs) from mixtures. The use of a triethylene glycol-functionalized formylpyridine subcomponent allowed the construction of an FeII4L4 tetrahedron 1 that was capable of transferring between water and nitromethane layers, driven by anion metathesis. Cage 1 selectively encapsulated coronene from among a mixture of eight different types of PAHs in nitromethane, bringing it into a new nitromethane phase by transiting through an intermediate water phase. The bound coronene was released from 1 upon addition of benzene, and both the cage and the purified coronene could be separated via further phase separation.