C 8 F 17 Br perfluorooctyl bromide the ligand L of the unit of formula (I) of the MOF solids of the present invention may be a di-, tri-, tetra- or hexa-carboxylate ligand chosen from the group comprising: s represents an integer of 1 to 4 t independently represents an integer of 1 to 4 u represents an integer of 1 to 7 L1 and L2 independently represent H, halogen or C 1 -C 6 alkyl (preferably methyl or ethyl), and at least one occurrence of R L1 or R L2 is F, and each occurrence of R L3 is independently H, halogen (preferably F, Cl or Br), OH, NH 2 , NO 2 or C 1 -C 6 alkyl (preferably methyl or ethyl), and at least one occurrence of R L 3 represents F
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Better in terms of safety or risk
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