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.