Fig. 1: Schematic illustration of luminescent co-crystals.

TAHOFN, TAHTFPN_G, TAHTFPN_O and TAHTCNB composed of twisted aromatic hydrocarbon donor (TAH) and planar acceptors octafluoronapthalene (OFN), tetra-fluoropterepthonatonitrile (TFPN), and tetracyanobenzene (TCNB) with their respective tunable packing-oriented color-tunable polymorphs and configurational isomeric binary assembly structures.