Two genuine supramolecular isomers exhibiting hierarchical resemblance and distinction

Two supramolecular isomers based on CuCN and 3,4-bis(4-pyridinesulfanylmethyl)thiophene exhibited conformational, topological, catenane and optical isomerism within tectonic, molecular and supramolecular levels, respectively. At the material level, the two isomeric compounds displayed diverse photoluminescence, emitting at 517 nm and 553 nm, respectively, in the solid state at room temperature.