Host–Guest Chirality Interplay: A Mutually Induced Formation of a Chiral ZMOF and Its Double-Helix Polymer Guests

A novel
homochiral zeolite-like metal–organic framework
(ZMOF), [(Cu4I4) (dabco)2]·[Cu2(bbimb)]·3DMF (JLU-Liu23, dabco =1,4-diazabicyclo[2.2.2]-octane,
H2bbimb =1,3-bis­(2-benzimidazol)­benzene, DMF = N,N-dimethylformamide), has been successfully
constructed to host unprecedented DNA-like [Cu2(bbimb)]n polymers with double-helicity. The host–guest
chirality interplay permitted the induced formation of an unusual
gyroid MOF with homochirality and helical channels in the framework
for the first time, JLU-Liu23. Importantly, the enantiomeric
pairs (23P, 23M) can be promoted and isolated
in the presence of appropriate chiral inducing agents, affording enantioselective
separation of chiral molecules as well as small gas molecules.