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


Akkurt N., Al-Jumaili M. H. A. , Ocak H. , Çakar F. , Torun L.

TURKISH JOURNAL OF CHEMISTRY, cilt.44, ss.726-746, 2020 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 44
  • Basım Tarihi: 2020
  • Doi Numarası: 10.3906/kim-1912-51
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.726-746

Özet

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).