Russian Journal of Physical Chemistry A

, Volume 91, Issue 13, pp 2578–2584 | Cite as

Influence of Hydrogen Bond on Thermal and Phase Transitions of Binary Complex Liquid Crystals

  • V. N. Vijayakumar
  • T. R. Rajasekaran
  • K. Baskar
Structure of Matter and Quantum Chemistry


A novel supramolecular liquid crystal (LC) is synthesized from the binary complex of 4-decyloxy benzoic acid and cholesteryl acetate. Fourier transform infrared (FTIR) spectroscopic study confirms the formation of intermolecular hydrogen bond between the mesogens. Various mesophases and corresponding textural changes in the complex are observed by comparing with its constituents through polarizing optical microscopic (POM) studies. The thermal stability factor of smectic phase for present complex is calculated. An interesting observation of present work is that investigation of extended thermal span of mesomorphic phases, decreased enthalpy, a nematic phase with a high clearing point and a low melting point. This is due to an arrangement of molecular reorientations and the development of new associations by hydrogen bonding. Optical tilt angle for smectic C phase is determined and the same is fitted to a power law.


hydrogen bonded liquid crystals binary complex nematic smectic POM DSC 


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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. N. Vijayakumar
    • 1
  • T. R. Rajasekaran
    • 2
  • K. Baskar
    • 2
  1. 1.Department of Physics, Condensed Matter Research Laboratory (CMRL)Bannari Amman Institute of TechnologySathyamangalamIndia
  2. 2.Department of PhysicsManonmaniam Sundaranar UniversityTirunelveliIndia

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