Open Access
Journal of Molecular Liquids, volume 288, pages 111057
Influence of the type of phase sequence and polymer-stabilization on the physicochemical and electro-optical properties of novel high-tilt antiferroelectric liquid crystalline materials
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Faculty of Advanced Technologies and Chemistry, Military University of Technology, Gen. W. Urbanowicza str. 2, 00-908 Warsaw, Poland
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Publication type: Journal Article
Publication date: 2019-08-01
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
Antiferroelectric liquid crystal (AFLC) mixtures with two types of phase sequence, isotropic - smectic A* - smectic C* - smectic CA* and isotropic - smectic CA*, respectively, have been formulated from components having biphenyl benzoate rigid cores, a non-chiral terminal chain with either alkoxy groups as well as perfluorinated parts on one side, and a chiral chain with different structures on the other side. The properties of the mixtures have been examined by means of polarized optical microscopy, differential scanning calorimetry, as well as UV–Vis-NIR spectrophotometry, and their electrooptic performance have been characterized in device cells, before and after polymer-stabilization of the structures. For all mixtures we observed unusually broad temperature ranges of the smectic CA* phase, extending from at least −30 °C to about +70 °C or more, molecular tilt angles of 42–44°, helical pitches of several micrometers, and a spontaneous polarization of about 200 nC/cm2. The polymer network has a profound impact on the relaxation to the anticlinic state, especially in the mixtures with a direct smectic SmCA*- isotropic phase transition. A symmetric electrooptic response, with both on and off response times of about 140 μs, was obtained in cell gaps of 1.5 μm, which is, to our knowledge, unique among contemporary available high tilt AFLC material systems.
Citations by journals
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Citations by publishers
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Elsevier
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11 publications, 45.83%
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Taylor & Francis
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Multidisciplinary Digital Publishing Institute (MDPI)
5 publications, 20.83%
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Springer Nature
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Springer Nature
1 publication, 4.17%
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2
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12
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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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Czerwiński M. et al. Influence of the type of phase sequence and polymer-stabilization on the physicochemical and electro-optical properties of novel high-tilt antiferroelectric liquid crystalline materials // Journal of Molecular Liquids. 2019. Vol. 288. p. 111057.
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Czerwiński M., Urbanska M., Bennis N., Rudquist P. Influence of the type of phase sequence and polymer-stabilization on the physicochemical and electro-optical properties of novel high-tilt antiferroelectric liquid crystalline materials // Journal of Molecular Liquids. 2019. Vol. 288. p. 111057.
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TY - JOUR
DO - 10.1016/j.molliq.2019.111057
UR - https://doi.org/10.1016%2Fj.molliq.2019.111057
TI - Influence of the type of phase sequence and polymer-stabilization on the physicochemical and electro-optical properties of novel high-tilt antiferroelectric liquid crystalline materials
T2 - Journal of Molecular Liquids
AU - Czerwiński, Michał
AU - Urbanska, Maria
AU - Bennis, Noureddine
AU - Rudquist, Per
PY - 2019
DA - 2019/08/01 00:00:00
PB - Elsevier
SP - 111057
VL - 288
SN - 0167-7322
SN - 1873-3166
ER -
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@article{2019_Czerwiński,
author = {Michał Czerwiński and Maria Urbanska and Noureddine Bennis and Per Rudquist},
title = {Influence of the type of phase sequence and polymer-stabilization on the physicochemical and electro-optical properties of novel high-tilt antiferroelectric liquid crystalline materials},
journal = {Journal of Molecular Liquids},
year = {2019},
volume = {288},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016%2Fj.molliq.2019.111057},
pages = {111057},
doi = {10.1016/j.molliq.2019.111057}
}