Selective Separation of Polyaromatic Hydrocarbons by Phase Transfer of Coordination Cages
Open Access
- 15 November 2019
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 141 (48), 18949-18953
- https://doi.org/10.1021/jacs.9b10741
Abstract
Here we report a new supramolecular strategy for the selective separation of specific polycyclic aromatic hydrocarbons (PAHs) from mixtures. The use of a triethyleneglycol-functionalized formylpyridine subcomponent allowed the construction of a FeII4L4 tetrahedron 1, which 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.Funding Information
- Engineering and Physical Sciences Research Council (EP/M008258/1)
- University of Cambridge
- H2020 European Research Council (695009)
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