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2012 | 122 | 2 | 370-374
Article title

Studies of Phase Diagram of a Liquid Crystal with 4-[2-(3-Fluorophenyl)ethyl]biphenyl Core of Molecules

Content
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Languages of publication
EN
Abstracts
EN
Basing on the results of differential scanning calorimetry and transmitted light intensity methods and texture observations in the temperature range from - 50C to 90C phase diagram of 1-[3-fluoro-4-(1-methylheptyloxycarbonyl)phenyl]-2-[4'-(2,2,3,3,4,4,4-heptafluorobutoxybutoxy)biphenyl-4-yl]ethane was established. Monotropic system of thermodynamic phases was found. On cooling the isotropic phase transforms at 85C to ferroelectric SmC* phase and further two liquid crystalline phases, antiferroelectric SmC*_{A} and SmI, and a metastable crystal Cr2 reveal. During heating exothermic anomaly in the wide temperature range was observed and ascribed to evolution of Cr2 to the stable crystal Cr1. On further heating both SmC*_{A} and SmC* phases were observed. Thermodynamic parameters were calculated for all phase transitions. During rapid cooling (10 K/min) vitrification of metastable Cr2 crystal at T_{g} = - 115C was registered.
Keywords
EN
Publisher

Year
Volume
122
Issue
2
Pages
370-374
Physical description
Dates
published
2012-08
Contributors
author
  • Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
  • Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
author
  • Faculty of Chemistry, Jagiellonian University, R. Ingardena 3, 30-060 Kraków, Poland
author
  • Institute of Chemistry, Siedlce University of Natural Sciences and Humanities, 3-go Maja 54, 08-110 Siedlce, Poland
author
  • Institute of Chemistry, Siedlce University of Natural Sciences and Humanities, 3-go Maja 54, 08-110 Siedlce, Poland
author
  • Institute of Chemistry, Military University of Technology, S. Kaliskiego 2, 00-908 Warszawa, Poland
References
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  • 8. J. Ściesiński, E. Ściesińska, M. Massalska-Arodź, T. Wasiutyński, P.M. Zieliński, W. Witko, IEEE Trans. Diel. Electr. Insulat. 8, 522 (2001)
  • 9. Ł. Kolek, M. Massalska-Arodź, M. Paluch, K. Adrjanowicz, T. Rozwadowski, D. Majda, in preparation
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  • 11. M. Massalska-Arodź, E. Ściesińska, J. Ściesiński, J. Krawczyk, A. Inaba, P.M. Zieliński, in: Dielectric Properties of Liquid Crystals, Eds. Z. Galewski, L. Sobczyk, Transworld Research Network, Kerala 2007, p. 159
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122n2p52kz
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