A metal–organic cage (MOC) is shown to be an efficient molecular sponge for PFOS. A large association constant is observed for the 2 : 1 PFOS : MOC host–guest complex. Up to 12 equivalents of PFOS per MOC are removed from water. The recycling procedure developed allows for the recovery and reuse of the MOC.
M. Das Bairagya, P. S. Ntipouna, N. K. Stewart and N. Elgrishi, Chem. Commun., 2024, 60, 11084 DOI: 10.1039/D4CC03945A
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