Correlation between the molecular chirality index and the spontaneous polarisation in series of smectic C-star liquid crystals

S. Becke, S. Haller, M.A. Osipov, F. Giesselmann

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A correlation between spontaneous polarisation and the chirality index of the constituent molecules, multiplied by the molecular transverse dipole, has been considered for five series of ferroelectric smectic C* liquid crystals. A good correlation has been found within each series, and it has been shown that the scaled chirality index may be used to estimate the spontaneous polarisation in a series of smectic C* mesogens with small systematic changes of the molecular structure. At the same time one cannot expect any significant correlation between the polarisation and the chirality index for smectic C* materials of sufficiently different structure because the spontaneous polarisation may be significantly effected by some details of the molecule's structure including the orientation of the transverse dipole with respect to the primary short molecular axis.
LanguageEnglish
Pages573-582
Number of pages9
JournalMolecular Physics
Volume108
Issue number5
DOIs
Publication statusPublished - Mar 2010

Fingerprint

Liquid Crystals
carbon stars
Chirality
Molecular Structure
chirality
Stars
liquid crystals
Polarization
polarization
dipoles
Molecules
Molecular structure
Ferroelectric materials
molecules
molecular structure
estimates

Keywords

  • ferroelectric liquid crystals
  • chirality index
  • molecular structure

Cite this

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abstract = "A correlation between spontaneous polarisation and the chirality index of the constituent molecules, multiplied by the molecular transverse dipole, has been considered for five series of ferroelectric smectic C* liquid crystals. A good correlation has been found within each series, and it has been shown that the scaled chirality index may be used to estimate the spontaneous polarisation in a series of smectic C* mesogens with small systematic changes of the molecular structure. At the same time one cannot expect any significant correlation between the polarisation and the chirality index for smectic C* materials of sufficiently different structure because the spontaneous polarisation may be significantly effected by some details of the molecule's structure including the orientation of the transverse dipole with respect to the primary short molecular axis.",
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Correlation between the molecular chirality index and the spontaneous polarisation in series of smectic C-star liquid crystals. / Becke, S.; Haller, S.; Osipov, M.A.; Giesselmann, F.

In: Molecular Physics, Vol. 108, No. 5, 03.2010, p. 573-582.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Correlation between the molecular chirality index and the spontaneous polarisation in series of smectic C-star liquid crystals

AU - Becke, S.

AU - Haller, S.

AU - Osipov, M.A.

AU - Giesselmann, F.

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N2 - A correlation between spontaneous polarisation and the chirality index of the constituent molecules, multiplied by the molecular transverse dipole, has been considered for five series of ferroelectric smectic C* liquid crystals. A good correlation has been found within each series, and it has been shown that the scaled chirality index may be used to estimate the spontaneous polarisation in a series of smectic C* mesogens with small systematic changes of the molecular structure. At the same time one cannot expect any significant correlation between the polarisation and the chirality index for smectic C* materials of sufficiently different structure because the spontaneous polarisation may be significantly effected by some details of the molecule's structure including the orientation of the transverse dipole with respect to the primary short molecular axis.

AB - A correlation between spontaneous polarisation and the chirality index of the constituent molecules, multiplied by the molecular transverse dipole, has been considered for five series of ferroelectric smectic C* liquid crystals. A good correlation has been found within each series, and it has been shown that the scaled chirality index may be used to estimate the spontaneous polarisation in a series of smectic C* mesogens with small systematic changes of the molecular structure. At the same time one cannot expect any significant correlation between the polarisation and the chirality index for smectic C* materials of sufficiently different structure because the spontaneous polarisation may be significantly effected by some details of the molecule's structure including the orientation of the transverse dipole with respect to the primary short molecular axis.

KW - ferroelectric liquid crystals

KW - chirality index

KW - molecular structure

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