Structure studies of the nematic phase formed by bent-core molecules

N. Vaupotic, J. Szydlowska, M. Salamonczyk, A. Kovarova, J. Svoboda, M.A. Osipov, D. Pociecha, E. Gorecka

Research output: Contribution to journalArticle

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Abstract

In recent years there are several reports showing that bent-core mesogenic molecules are able to form biaxial nematic phase in which molecular rotation around the long molecular axis is strongly hindered. The x-ray pattern with azimuthally split signals at low angle region of diffraction is usually given as evidence for the biaxial nematic phase. We show experimentally and theoretically that such x-ray pattern is due to the local smectic-C fluctuations ('cybotactic' groups) in the uniaxial nematic phase.
LanguageEnglish
JournalPhysical Review E
Volume80
Issue number3
DOIs
Publication statusPublished - Sep 2009

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Biaxial
Molecules
molecular rotation
molecules
x rays
Diffraction
diffraction
Fluctuations
Angle
Evidence

Keywords

  • structure studies
  • nematic phase
  • bent-core molecules

Cite this

Vaupotic, N., Szydlowska, J., Salamonczyk, M., Kovarova, A., Svoboda, J., Osipov, M. A., ... Gorecka, E. (2009). Structure studies of the nematic phase formed by bent-core molecules. Physical Review E, 80(3). https://doi.org/10.1103/PhysRevE.80.030701
Vaupotic, N. ; Szydlowska, J. ; Salamonczyk, M. ; Kovarova, A. ; Svoboda, J. ; Osipov, M.A. ; Pociecha, D. ; Gorecka, E. / Structure studies of the nematic phase formed by bent-core molecules. In: Physical Review E. 2009 ; Vol. 80, No. 3.
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Vaupotic, N, Szydlowska, J, Salamonczyk, M, Kovarova, A, Svoboda, J, Osipov, MA, Pociecha, D & Gorecka, E 2009, 'Structure studies of the nematic phase formed by bent-core molecules' Physical Review E, vol. 80, no. 3. https://doi.org/10.1103/PhysRevE.80.030701

Structure studies of the nematic phase formed by bent-core molecules. / Vaupotic, N.; Szydlowska, J.; Salamonczyk, M.; Kovarova, A.; Svoboda, J.; Osipov, M.A.; Pociecha, D.; Gorecka, E.

In: Physical Review E, Vol. 80, No. 3, 09.2009.

Research output: Contribution to journalArticle

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AU - Vaupotic, N.

AU - Szydlowska, J.

AU - Salamonczyk, M.

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AU - Svoboda, J.

AU - Osipov, M.A.

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AB - In recent years there are several reports showing that bent-core mesogenic molecules are able to form biaxial nematic phase in which molecular rotation around the long molecular axis is strongly hindered. The x-ray pattern with azimuthally split signals at low angle region of diffraction is usually given as evidence for the biaxial nematic phase. We show experimentally and theoretically that such x-ray pattern is due to the local smectic-C fluctuations ('cybotactic' groups) in the uniaxial nematic phase.

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KW - nematic phase

KW - bent-core molecules

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