Abstract
We try to explain the causes of the disappearance of the nematic phase by changing the position of the nitrogen in 2,5-disubsituted pyridine derivatives by quantum mechanical theory. The findings explain that the electrostatic interactions along with shape anisotropy are causes of sequential appearances/disappearances of liquid crystal phases. The antiparallel or parallel orientations also play a crucial role in the formation of liquid crystal phases. The study reveals the strong alignment of mesogens in the liquid crystal phase.
Acknowledgment
The authors are thankful to the Dept. Science & Technology for providing the computational facilities under DST-FIST grant No. SR/FST/PSI?204.