Enaminoketone mesogens having polar terminal groups

Adam Krowczynski; Wieslaw Pyzuk; Ewa Gorecka; Jadwiga Szydlowska

doi:10.1117/12.156972

15 October 1993 Enaminoketone mesogens having polar terminal groups

Adam Krowczynski, Wieslaw Pyzuk, Ewa Gorecka, Jadwiga Szydlowska

Proceedings Volume 1845, Liquid and Solid State Crystals: Physics, Technology and Applications; (1993) https://doi.org/10.1117/12.156972
Event: Liquid and Solid State Crystals: Physics, Technology, and Applications, 1992, Zakopane, Poland

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 A_d 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 SmA_d - SmC_d phase transition line is observed.

Citation Download Citation

Adam Krowczynski, Wieslaw Pyzuk, Ewa Gorecka, and Jadwiga Szydlowska "Enaminoketone mesogens having polar terminal groups", Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); https://doi.org/10.1117/12.156972

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