Synthesis, liquid crystalline and photoluminscent properties of 1,3,4-oxadiazole derivatives: From calamitic monomers, H-Shaped dimers to calix[4]arene-based tetramers

The calamitic monomers exhibit stable liquid crystalline properties, while the H-shaped dimers and calix[4]arene-based tetramer display specific fluorescent recognition of Cu2+ ion.372