Abstract
A nonionic thermotropic liquid-crystalline polymer [NI-LCP] and its ionic family [LCPEI-M-Br] were synthesized. Their liquid-crystalline properties were compared, and the effects of poly(ammonium salt) backbones in LCPEI-M-Br for liquid-crystalline properties were studied. Nonionic NI-LCP exhibited a nematic phase with a schlieren texture. However, ionic LCPEI-M-Br formed smectic phases with fan textures by an aggregation of poly(ammonium salt) backbones. Ionic LCPEI-M-Br showed the enhanced thermal stability in comparison with nonionic NI-LCP. Ionic LCPEI-M-Br formed an ammonium bilayer consisting of ionic and nonionic sublayers. LCPEI-M-Br also formed spontaneously a homeotropic structure in the smectic phase by orientational adsorption of ammonium ions.
Similar content being viewed by others
Article PDF
References
P. G. de Gennes “The Physics of Liquid Crystals,” Clarendon Press, Oxford, 1974.
G. W. Gray and P. A. Winsor, “Liquid Crystals and Plastic Crystals,” Vol. 1 and Vol. 2, Wiley, New York, N.Y., 1974.
E. J. R. Sudholter, J. B. F. N. Engberts, and W. H. de Jeu, J. Phys. Chem., 86, 1908 (1982).
V. Busico, P. Cernicchiaro, P. Corradini, and M. Vacatello, J. Phys. Chem., 87, 1631 (1983).
D. C. Schroeder and J. P. Schroeder, Mol. Cryst. Liq. Cryst., 78, 221 (1981).
V. Busico, D. Castaldo, and M. Vacatello, Mol. Cryst. Liq. Cryst., 78, 221 (1981).
S. Ujiie and K. Iimura, Macromolecules, 25, 3174 (1992).
S. Ujiie and K. Iimura, Mol. Cryt. Liq. Cryst. Lett., 8(5), 111 (1992).
J. E. Proust, L. Ter-Minassian-Sarge, and E. Guyron, Solid State Commun., 11, 1227 (1972).
T. Uchida, M. Ohgawara, and Y. Shibata, Mol. Cryst. Liq. Cryst., 98, 149 (1983).
M. Ohgawara, T. Uchida, and M. Wada, Mol. Cryst. Liq. Cryst., 74, 227 (1981).
S. Ujiie and K. Iimura, Polym. J., 23, 1483 (1991).
F. Hessel and H. Finkelmann, Polym. Bull., 15, 349 (1986).
In the ionic sublayer, the counterions will be displaced above and below the plane of the figure to minimize repulsive interactions.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ujiie, S., Iimura, K. Formation of Smectic Orientational Order in an Ionic Thermotropic Liquid-Crystalline Side-Chain Polymer. Polym J 25, 347–354 (1993). https://doi.org/10.1295/polymj.25.347
Issue Date:
DOI: https://doi.org/10.1295/polymj.25.347
Keywords
This article is cited by
-
Functional liquid-crystalline polymers and supramolecular liquid crystals
Polymer Journal (2018)
-
Synthesis and characterization of hydrogen bonded liquid crystalline block copolymers based on a Schiff base moiety
Journal of Polymer Research (2015)
-
Influence of spacer length on liquid crystal microstructures of branched polyethyleneimines with mesogenic pendent groups
Polymer Journal (2012)
-
Liquid crystalline behavior and fluorescent property of calix[4]arene containing azobenzene photochromic group
Frontiers of Chemistry in China (2007)