Unprecedented five-fold interpenetrated donor-acceptor hybrid heterostructure induced by anion-π interactions

The combination of hexacyanoferrate anions with protonated N,N'-dipyridyl-naphthalene diimide tectons resulted in a novel cuboid 3-D H-bonded anion-coordinated framework. Induced by anion-pi interactions, such a unique framework is further catenated into an unprecedented five-fold interpenetrated D-A hybrid heterostructure with 1-D hexacyanoferrate polyanions and naphthalene diimide aggregates as electron donors and acceptors, respectively. The photophysical and photochemical properties have also been discussed.