Influence of hydrogen bonding on phase abundance in ferroelectric liquid crystals

B. Sridevi, P. V. Chalapathi, M. Srinivasulu, V. G.K.M. Pisipati, D. M. Potukuchi

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The synthesis and characterization of five hydrogen-bonded ferroelectric liquid crystal complexes (HBFLCs) prepared from mesogenic p-n-alkoxy benzoic acids and non-mesogenic propionic/butyric acids with different chiral centres are reported. Complementary intermolecular hydrogen bonding is confirmed through IR study. HBFLCs are found to exhibit chiral nematic (N*), smectic C* (SmC*) and smectic G* (monotropic) phases in their cooling profiles during polarizing thermal microscopy and differential scanning calorimetry. Phase coexistence regions are observed above the IN* transition. The chiral nematic to smectic C* transition is found to be of first order. The temperature variation of spontaneous polarization exhibited by these HBFLC complexes in their SmC* phase is presented. The effect of non-covalent interaction imparted by the soft hydrogen bonding in these LC complexes on enhanced or induced thermal stability of tilted LC phases is discussed.

Original languageEnglish
Pages (from-to)303-310
Number of pages8
JournalLiquid Crystals
Volume31
Issue number3
DOIs
Publication statusPublished - 01-03-2004

Fingerprint

Liquid Crystals
Liquid crystals
Ferroelectric materials
Hydrogen
Hydrogen bonds
liquid crystals
hydrogen
Propionic acid
Butyric acid
Benzoic acid
Butyrates
Benzoates
Differential scanning calorimetry
Microscopic examination
Thermodynamic stability
propionic acid
Polarization
butyric acid
Cooling
benzoic acid

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Sridevi, B. ; Chalapathi, P. V. ; Srinivasulu, M. ; Pisipati, V. G.K.M. ; Potukuchi, D. M. / Influence of hydrogen bonding on phase abundance in ferroelectric liquid crystals. In: Liquid Crystals. 2004 ; Vol. 31, No. 3. pp. 303-310.
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Influence of hydrogen bonding on phase abundance in ferroelectric liquid crystals. / Sridevi, B.; Chalapathi, P. V.; Srinivasulu, M.; Pisipati, V. G.K.M.; Potukuchi, D. M.

In: Liquid Crystals, Vol. 31, No. 3, 01.03.2004, p. 303-310.

Research output: Contribution to journalArticle

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T1 - Influence of hydrogen bonding on phase abundance in ferroelectric liquid crystals

AU - Sridevi, B.

AU - Chalapathi, P. V.

AU - Srinivasulu, M.

AU - Pisipati, V. G.K.M.

AU - Potukuchi, D. M.

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N2 - The synthesis and characterization of five hydrogen-bonded ferroelectric liquid crystal complexes (HBFLCs) prepared from mesogenic p-n-alkoxy benzoic acids and non-mesogenic propionic/butyric acids with different chiral centres are reported. Complementary intermolecular hydrogen bonding is confirmed through IR study. HBFLCs are found to exhibit chiral nematic (N*), smectic C* (SmC*) and smectic G* (monotropic) phases in their cooling profiles during polarizing thermal microscopy and differential scanning calorimetry. Phase coexistence regions are observed above the IN* transition. The chiral nematic to smectic C* transition is found to be of first order. The temperature variation of spontaneous polarization exhibited by these HBFLC complexes in their SmC* phase is presented. The effect of non-covalent interaction imparted by the soft hydrogen bonding in these LC complexes on enhanced or induced thermal stability of tilted LC phases is discussed.

AB - The synthesis and characterization of five hydrogen-bonded ferroelectric liquid crystal complexes (HBFLCs) prepared from mesogenic p-n-alkoxy benzoic acids and non-mesogenic propionic/butyric acids with different chiral centres are reported. Complementary intermolecular hydrogen bonding is confirmed through IR study. HBFLCs are found to exhibit chiral nematic (N*), smectic C* (SmC*) and smectic G* (monotropic) phases in their cooling profiles during polarizing thermal microscopy and differential scanning calorimetry. Phase coexistence regions are observed above the IN* transition. The chiral nematic to smectic C* transition is found to be of first order. The temperature variation of spontaneous polarization exhibited by these HBFLC complexes in their SmC* phase is presented. The effect of non-covalent interaction imparted by the soft hydrogen bonding in these LC complexes on enhanced or induced thermal stability of tilted LC phases is discussed.

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