Synthesis and liquid crystalline properties of (S)-[4-n-alkyloxy-benzoyloxyphenyl]-4′-[(2-n-alkyloxy)propionyloxy] benzoate

A. Vajda, Miroslav Kašpar, Věra Hamplová, Ser Gei A Pakhomov, Přemysl Vaněk, Alexei Bubnov, K. Fodor-Csorba, Nándor Éber

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

New series of chiral liquid crystalline compounds, (S)-[4-n-alkyloxy-benzoyloxyphenyl]-4′-[(2-n-alkyloxy)propionyloxy] benzoate (QMn/m), were synthesised. Polymorphism of the new compounds was investigated by polarising microscopy and differential scanning calorimetry. All members of the homologous series showed enantiotropic SmC* and N* mesophases except one compound having the longest alkyl chain in both terminal groups. The spontaneous polarisation of these ferroelectric liquid crystalline compounds is about 110-130 nC/cm2. The temperature dependence of the dielectric permittivity was measured for all the compounds studied. Several ferroelectric binary mixtures were prepared in order to get a wide enantiotropic chiral SmC* phase at ambient temperature.

Original languageEnglish
Pages (from-to)569-580
Number of pages12
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume365
Publication statusPublished - 2001

Fingerprint

Benzoates
Ferroelectric materials
Crystalline materials
polymorphism
Liquids
synthesis
liquids
Binary mixtures
Polymorphism
binary mixtures
ambient temperature
Differential scanning calorimetry
Microscopic examination
Permittivity
heat measurement
Polarization
permittivity
microscopy
Temperature
temperature dependence

Keywords

  • Dielectric constant
  • Ferroelectric mixtures
  • Lactic acid derivatives
  • Spontaneous polarisation
  • Synthesis
  • Tilt angle

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Synthesis and liquid crystalline properties of (S)-[4-n-alkyloxy-benzoyloxyphenyl]-4′-[(2-n-alkyloxy)propionyloxy] benzoate. / Vajda, A.; Kašpar, Miroslav; Hamplová, Věra; Pakhomov, Ser Gei A; Vaněk, Přemysl; Bubnov, Alexei; Fodor-Csorba, K.; Éber, Nándor.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 365, 2001, p. 569-580.

Research output: Contribution to journalArticle

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AU - Vajda, A.

AU - Kašpar, Miroslav

AU - Hamplová, Věra

AU - Pakhomov, Ser Gei A

AU - Vaněk, Přemysl

AU - Bubnov, Alexei

AU - Fodor-Csorba, K.

AU - Éber, Nándor

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N2 - New series of chiral liquid crystalline compounds, (S)-[4-n-alkyloxy-benzoyloxyphenyl]-4′-[(2-n-alkyloxy)propionyloxy] benzoate (QMn/m), were synthesised. Polymorphism of the new compounds was investigated by polarising microscopy and differential scanning calorimetry. All members of the homologous series showed enantiotropic SmC* and N* mesophases except one compound having the longest alkyl chain in both terminal groups. The spontaneous polarisation of these ferroelectric liquid crystalline compounds is about 110-130 nC/cm2. The temperature dependence of the dielectric permittivity was measured for all the compounds studied. Several ferroelectric binary mixtures were prepared in order to get a wide enantiotropic chiral SmC* phase at ambient temperature.

AB - New series of chiral liquid crystalline compounds, (S)-[4-n-alkyloxy-benzoyloxyphenyl]-4′-[(2-n-alkyloxy)propionyloxy] benzoate (QMn/m), were synthesised. Polymorphism of the new compounds was investigated by polarising microscopy and differential scanning calorimetry. All members of the homologous series showed enantiotropic SmC* and N* mesophases except one compound having the longest alkyl chain in both terminal groups. The spontaneous polarisation of these ferroelectric liquid crystalline compounds is about 110-130 nC/cm2. The temperature dependence of the dielectric permittivity was measured for all the compounds studied. Several ferroelectric binary mixtures were prepared in order to get a wide enantiotropic chiral SmC* phase at ambient temperature.

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