Open Access
Journal of Molecular Liquids, volume 283, pages 472-481
Effect of molecular structure on dielectric and electro-optic properties of chiral liquid crystals based on lactic acid derivatives
2
Department of Physics, Siliguri Institute of Technology, Siliguri, India
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3
Institute of Physics, Czech Academy of Sciences, 18221, Prague, Czech Republic.
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Publication type: Journal Article
Publication date: 2019-06-01
Journal:
Journal of Molecular Liquids
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 6
ISSN: 01677322, 18733166
Materials Chemistry
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
Spectroscopy
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Abstract
Self-assembling behaviour of a few lactic acid derivatives with several ester linkage groups in the molecular core has been studied. The molecular structure–physical property correlations has been discussed in the light of the temperature dependences of the static permittivity, dielectric anisotropy, spontaneous polarization, response time and torsional bulk viscosity for eight chiral ferroelectric liquid crystalline compounds. Depending on the molecular structure these compounds exhibit the chiral nematic (N*) phase, the paraelectric orthogonal smectic A* (SmA*) phase and the ferroelectric tilted smectic C*(SmC*) phase being thermally stable over relatively broad temperature range. The temperature behaviour of the spontaneous polarization clearly confirms the second order nature of the SmA*-SmC* phase transition and the first order nature of the N*-SmC* phase transition. The effect of temperature and molecular configuration on the polarization and on the dispersion anchoring energy coefficients has been established. The obtained results are discussed in order to contribute to the structure – property relationship for the specific class of soft organic materials which can be used for design of smart multifunctional liquid crystalline mixtures aimed for optoelectronic and photonic applications.
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Citations by publishers
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Barman B. et al. Effect of molecular structure on dielectric and electro-optic properties of chiral liquid crystals based on lactic acid derivatives // Journal of Molecular Liquids. 2019. Vol. 283. pp. 472-481.
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Barman B., Das B., Das M. K., Hamplová V., Kašpar M. Effect of molecular structure on dielectric and electro-optic properties of chiral liquid crystals based on lactic acid derivatives // Journal of Molecular Liquids. 2019. Vol. 283. pp. 472-481.
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TY - JOUR
DO - 10.1016/j.molliq.2019.03.071
UR - https://doi.org/10.1016%2Fj.molliq.2019.03.071
TI - Effect of molecular structure on dielectric and electro-optic properties of chiral liquid crystals based on lactic acid derivatives
T2 - Journal of Molecular Liquids
AU - Barman, Barnali
AU - Das, Banani
AU - Das, Malay K.
AU - Hamplová, V.
AU - Kašpar, M.
PY - 2019
DA - 2019/06/01 00:00:00
PB - Elsevier
SP - 472-481
VL - 283
SN - 0167-7322
SN - 1873-3166
ER -
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@article{2019_Barman,
author = {Barnali Barman and Banani Das and Malay K. Das and V. Hamplová and M. Kašpar},
title = {Effect of molecular structure on dielectric and electro-optic properties of chiral liquid crystals based on lactic acid derivatives},
journal = {Journal of Molecular Liquids},
year = {2019},
volume = {283},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016%2Fj.molliq.2019.03.071},
pages = {472--481},
doi = {10.1016/j.molliq.2019.03.071}
}