PL EN


Preferences help
enabled [disable] Abstract
Number of results
2013 | 124 | 6 | 913-916
Article title

Dynamics and Phase Transitions of 4-Bromobenzylidene-4'-pentyloxyaniline and 4-Bromobenzylidene-4'-hexyloxyaniline as Studied by Dielectric Spectroscopy

Content
Title variants
Languages of publication
EN
Abstracts
EN
Significant differences in phase sequence and dynamics between 4-bromobenzylidene-4'-pentyloxyaniline (5BBA) and -bromobenzylidene-4'-heksyloxyaniline (6BBA) substances were detected by broadband dielectric spectroscopy. In the smectic A (6BBA), the smectic B (found in both substances) and the smectic E (5BBA) phases the relaxation was ascribed to reorientations of the molecules around the short axes. Slow dynamics detected in the smectic E and in two crystalline phases of 5BBA was ascribed to conformational changes of molecular chains. Coexistence of Cr(I) and Cr(II) conformationally disordered crystal (CONDIS) phases was observed and vitrification of Cr(II) was identified with help of polarizing microscopy.
Keywords
Contributors
author
  • The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
  • The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, 31-342 Kraków, Poland
author
  • The Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
  • The Faculty of Mathematics and Applied Physics, Rzeszów University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
author
  • Institute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland
author
  • Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
author
  • Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
author
  • Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
References
  • [1] N. Osiecka, A. Budziak, Z. Galewski, M. Massalska-Arodź, Phase Transit. 85, 314 (2012)
  • [2] S. Urban, B. Gestblom, R. Dąbrowski, Liq. Cryst. 24, 681 (1998)
  • [3] S. Havriliak, S. Negami, Polymer 8, 161 (1967)
  • [4] F. Alvarez, A. Alegria, J. Colmenero, J. Phys. Rev. B 47, 125 (1992)
  • [5] D. Demus, Fascinating Liquid Crystals, Books on Demand, Norderstedt 2007
  • [6] M. Jasiurkowska-Delaporte, E. Juszyńska, Ł. Kołek, J. Krawczyk, M. Massalska-Arodź, N. Osiecka, T. Rozwadowski, Liquid Crystals 40, 1436 (2013)
  • [7] S. Urban, J. Czub, J. Przedmojski, R. Dąbrowski, M. Geppi, Mol. Cryst. Liq. Cryst. 477, 87 (2007)
  • [8] R. Brand, P. Lunkenheimer, A. Loidl, J. Chem. Phys. 116, 10386 (2002)
  • [9] L.C. Pardo, P. Lunkenheimer, A. Loidl, J. Chem. Phys. 124, 124911 (2006)
  • [10] S. Benkhof, A. Kudlik, T. Blochowicz, E. Rossler, J. Phys. Condens. Matter 10, 8155 (1998)
  • [11] B. Wunderlich, Pure Appl. Chem. 61, 1347 (1989)
  • [12] M. Massalska-Arodź, Neutron Scattering and Complementary Methods in Investigations of Condensed Phase, Vol. 2, Monography No. 60, University of Podlasie Publishing House, 2005, p. 19
  • [13] B. Wunderlich, Thermochim. Acta 340-341, 37 (1999)
  • [14] L. Bengugui, Phys. Rev. A 28, 1825 (1983)
  • [15] S. Urban, Adv. Mol. Relax. Inter., Processes 21, 221 (1981)
  • [16] P. Nagrier, L.C. Pardo, J. Salud, J.L. Tamarit, M. Barrio, D.O. Lopez, A. Wurflinger, D. Mondieig, Chem. Mater. 14, 1921 (2002)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv124n602kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.