Review Article
Karar Abdali Obaid
Abstract
Two Schiff bases ligands (liquid crystals) have been prepared from benzidine. The texture diagnosed by optical microscopy of polarizing light (POM) technique, these ligands have nematic phase (Enantiotropy Phase), then characterized multi physic-chemical techniques such as (UV-Visible, IR, XRD and CHN). The results show that the type of textures was marble at heating and schleiren at cooling for all ligands. Ligands have polycrystalline structure and take square planar with crystalline size in nano dimension.