A　new　class　of　metal-organic　frameworks　(MOFs)　has　been　synthesized　by　ligand-functionalization　strategy.　Systematic　studies　of　their　adsorption　properties　were　performed　at　low　and　high　pressure.　Importantly,　when　fluorine　was　introduced　into　the　framework　via　the　functionalization,　both　the　framework　stabilities　and　adsorption　capacities　towards　H-2/CO2　were　enhanced　significantly.　This　consequence　can　be　well　interpreted　by　theoretical　studies　of　these　MOFs　structures.　In　addition,　one　of　these　MOFs　TKL-107　was　used　to　fabricate　mixed　matrix　membranes,　which　exhibit　great　potential　for　the　application　of　CO2　separation.