A NOVEL CLASS OF HETEROCYCLIC LIQUID-CRYSTALS WITH BROAD SMECTIC-C PHASE

A successful approach in molecular design through fusing aromatic/hete rocyclic rings for broadening the smectic C (SmC) phase and the synthe sis of the first heterocyclic liquid crystalline (LC) molecules contai ning 3,7-disubstituted quinoline with one of the widest SmC phases are reported. Their naphthalene analogues are compared. The nitrogen atom in quinoline system introduces attractive forces to aid the formation of the tilted SmC phase and the flexible chain length also influences the tilted SmC phase effectively.