Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases

Nemanja Trišović, Jelena Antanasijević, T. Tóth-Katona, Michal Kohout, Miroslaw Salamonczyk, Samuel Sprunt, Antal Jákli, K. Fodor-Csorba

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A new series of azo-containing bent-core liquid crystals derived from 3-hydroxybenzoic acid has been synthesized. Their mesomorphic properties have been characterized by polarizing optical microscopy, differential scanning calorimetry, small-angle X-ray diffraction and electro-optic studies. Almost all the compounds form an enantiotropic modulated smectic (B7 type) phase over relatively broad temperature ranges. Structural modifications, such as the type and length of the terminal chains, the rigidity of wings, and the presence of a Cl-substituent in different positions of the bent core, affect the appearance and temperature range, but not the type of the mesophase of the investigated compounds. Light-induced changes in the texture and phase transition of the mesophase, attributed to the decrease of the order parameter due to trans-cis isomerization, have also been observed.

Original languageEnglish
Pages (from-to)64886-64891
Number of pages6
JournalRSC Advances
Volume5
Issue number80
DOIs
Publication statusPublished - Jul 20 2015

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Liquid Crystals
Liquid crystals
Electrooptical effects
Isomerization
Rigidity
Optical microscopy
Differential scanning calorimetry
Textures
Phase transitions
X ray diffraction
Temperature
Acids
3-hydroxybenzoic acid

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases. / Trišović, Nemanja; Antanasijević, Jelena; Tóth-Katona, T.; Kohout, Michal; Salamonczyk, Miroslaw; Sprunt, Samuel; Jákli, Antal; Fodor-Csorba, K.

In: RSC Advances, Vol. 5, No. 80, 20.07.2015, p. 64886-64891.

Research output: Contribution to journalArticle

Trišović, N, Antanasijević, J, Tóth-Katona, T, Kohout, M, Salamonczyk, M, Sprunt, S, Jákli, A & Fodor-Csorba, K 2015, 'Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases', RSC Advances, vol. 5, no. 80, pp. 64886-64891. https://doi.org/10.1039/c5ra09764a
Trišović N, Antanasijević J, Tóth-Katona T, Kohout M, Salamonczyk M, Sprunt S et al. Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases. RSC Advances. 2015 Jul 20;5(80):64886-64891. https://doi.org/10.1039/c5ra09764a
Trišović, Nemanja ; Antanasijević, Jelena ; Tóth-Katona, T. ; Kohout, Michal ; Salamonczyk, Miroslaw ; Sprunt, Samuel ; Jákli, Antal ; Fodor-Csorba, K. / Azo-containing asymmetric bent-core liquid crystals with modulated smectic phases. In: RSC Advances. 2015 ; Vol. 5, No. 80. pp. 64886-64891.
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