Synthesis and liquid crystalline properties of new triazine-basedπ-conjugated macromolecules with chiral side groups

Abstract

In this study, we reported the synthesis of a new tribranched macromolecule liquid crystal with triazine in the centre. The central triazine core is bonded via sequences of Sonigashira coupling to 3 triazine unites through acetylenic bridges. The triazines at the periphery are substituted with 2 chiral citronellyloxy side groups. The salt of the resulting star-shaped macromolecule, which was oily at room temperature, with 4-dodecyloxybenzoic acid at 1:1 ratio exhibited a Smectic C (SmC) mesophase. The liquid crystalline properties of organic salt were investigated using DSC (differential scanning calorimetry) and POM (polarizing optical microscopy).

Current Topics in Ionic Liquid Crystals

“… Star‐shaped triazine salt 61 studied by Lokman, prepared by treatment of 60 with the corresponding benzoic acid in dry THF with sonification at room temperature [196] . The figure was reproduced from ref [196] …”

Evaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation

“…Although it is considered as a separate phase between the solid and liquid phase, it can have at least one property of the solid and liquid phase. In the LC structure, the spontaneous orientation of the molecules in a certain direction provides a geometric selectivity to the stationary phase [3][4][5][6]. The orientation of the molecules in the LC structure can also differentiate the properties and usage fields of the LC.…”