A cucurbit[6]uril cage-based hydrogen-bonded organic framework (HOF) shows high capacity of SO2 capture (up to 4.98 mmol g−1 at 1 bar and 293 K), high SO2/CO2 selectivity, good chemical stability...

No deliquescence, cycle stability, increased water uptake over a neat MOF and LiCl at low humidity, and high coefficient of performance.

No abstract

The first examples of monolithic crystalline hostguest hybrid materials are described. The reaction of 1,3,5benzenetricarboxylic acid (H 3 BTC) and Fe(NO 3 ) 3 •9 H 2 O in the presence of decamethylcucurbit [5]uril ammonium chloride (MC5•2 NH 4 Cl•4 H 2 O) directly affords MC5@MIL-100(Fe) hybrid monoliths featuring hierarchical micro-, meso-and macropores. Particularly, this "bottle-around-ship" synthesis and one-pot shaping are facilitated by a newly discovered Fe-MC5 flowing gel formed by mechanochemistry. The designed MC5@MIL-100(Fe) hybrid material with MC5 as active domains shows enhanced CH 4 and lead(II) uptake performance, and selective capture of lead(II) cations at low concentrations. This shows that host-guest hybrid materials can exhibit synergic properties that out-perform materials based on individual components.