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

  • Structure of Matter and Quantum Chemistry
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Abstract

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.

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Authors and Affiliations

  1. Department of Physics, Condensed Matter Research Laboratory (CMRL), Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, 638401, India

    V. N. Vijayakumar

  2. Department of Physics, Manonmaniam Sundaranar University, Tirunelveli, 627012, India

    T. R. Rajasekaran & K. Baskar

Authors
  1. V. N. Vijayakumar
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  2. T. R. Rajasekaran
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  3. K. Baskar
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Correspondence to V. N. Vijayakumar.

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Vijayakumar, V.N., Rajasekaran, T.R. & Baskar, K. Influence of Hydrogen Bond on Thermal and Phase Transitions of Binary Complex Liquid Crystals. Russ. J. Phys. Chem. 91, 2578–2584 (2017). https://doi.org/10.1134/S0036024417130222

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  • DOI: https://doi.org/10.1134/S0036024417130222

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