Synthesis of New Macromolecule Star-Shape Liquid Crystalline Compounds Derived from Cyanuric Chloride

In this work, we created a new tri-branched macromolecule liquid crystal with a central triazine core. The central triazine core is linked to phenyl units via amine and azo bridges. When the resultant star-shaped macromolecule was coupled with 4-((4-alkyloxyphenyl) azo) aniline in a 1:3 ratio, it formed nematic for ethoxy, propyloxy, butyloxy, and pentyloxy derivatives. In contrast, the hexyloxy and octyloxy formed Smectic C (SmC) mesophase and became greasy at room temperature. This suggests that the molecule behaved like a liquid crystal under these circumstances. Two methodologies were used to investigate the mesophase properties: Differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It examined the thermal characteristics of materials, including phase transitions like melting and crystallization.