Dielectric Investigation on Newly Synthesized H – Shaped Liquid Crystalline Dimer

摘要

The present study reports the dielectric behavior of unusual H-Shaped liquid crystal dimer named Bis[5-(4’-n-dodecyloxybenzoyloxy)-2-(4”-chlorophenylazo)phenyl]butylethers (12-Cl-H4). The observations suggest that relaxation mode observed in MHz region follows the Cole-Cole theory for the given sample. Various dielectric parameters such as relaxation frequency, relaxation strength, dielectric perm ittivity, activation energy have been evaluated. The dielectric behavior of the given sample has been studied with variation in both temperature and frequency. Also a strong theoretical background has been depicted to minimize one of the liquid crystal defects (splay defect), with this new molecular topology. Thus, this new molecular topology could trigger a revolution in liquid crystalline devices and be used in future from application point of view.