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Selective Separation of Polyaromatic Hydrocarbons by Phase Transfer of Coordination Cages.


ABSTRACT: 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.

SUBMITTER: Zhang D 

PROVIDER: S-EPMC6900757 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Selective Separation of Polyaromatic Hydrocarbons by Phase Transfer of Coordination Cages.

Zhang Dawei D   Ronson Tanya K TK   Lavendomme Roy R   Nitschke Jonathan R JR  

Journal of the American Chemical Society 20191118 48


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 Fe<sup>II</sup><sub>4</sub>L<sub>4</sub> tetrahedron <b>1</b> that was capable of transferring between water and nitromethane layers, driven by anion metathesis. Cage <b>1</b> selectively encapsulated coronene from among a mixture of eight different typ  ...[more]

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