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Proceedings Paper

Enaminoketone mesogens having polar terminal groups
Author(s): Adam Krowczynski; Wieslaw Pyzuk; Ewa Gorecka; Jadwiga Szydlowska
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Paper Abstract

Homologous series of 4'-nitro- and 4'-cyano-derivatives of 1-(4'-alkoxyphenylamino)- 3-phenyl-1-propen-3-ones and a structurally similar series of 1-(4'- alkoxyphenylamino)-3-(4'-pyridyl-N-oxide)-1-propen-3-ones were synthesized and studied by DSC and optical methods. The compounds behave typically for strongly polar mesogens: the smectic Ad phase exists above a critical chain length and the re-entrant nematic phase is observed in the vicinity of the critical double point. For pyridyl N-oxides, a second-order SmAd - SmCd phase transition line is observed.

Paper Details

Date Published: 15 October 1993
PDF: 5 pages
Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); doi: 10.1117/12.156972
Show Author Affiliations
Adam Krowczynski, Univ. of Warsaw (Poland)
Wieslaw Pyzuk, Univ. of Warsaw (Poland)
Ewa Gorecka, Univ. of Warsaw (Poland)
Jadwiga Szydlowska, Univ. of Warsaw (Poland)

Published in SPIE Proceedings Vol. 1845:
Liquid and Solid State Crystals: Physics, Technology and Applications
Jozef Zmija, Editor(s)

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