“…Compared with competitors such as zeolites,m etal-organic frameworks (MOFs) and covalent organic frameworks (COFs), [1] HOFs provide inherent advantages,s uch as solubility,m ild reaction conditions and low cost. [3] Generally, HOFs are constructed by weak non-covalent interactions, such as hydrogen bonding and p···p stacking interactions.As ar esult, most HOFs are less stable than other porous materials,t he building units of which are linked by the relatively strong covalent or coordination bonds.C onsequently,f ew permanently porous HOFs have been reported to date,b ecause most HOFs either collapse after solvent removal or are unstable in heat and/or humidity. [3] Generally, HOFs are constructed by weak non-covalent interactions, such as hydrogen bonding and p···p stacking interactions.As ar esult, most HOFs are less stable than other porous materials,t he building units of which are linked by the relatively strong covalent or coordination bonds.C onsequently,f ew permanently porous HOFs have been reported to date,b ecause most HOFs either collapse after solvent removal or are unstable in heat and/or humidity.…”