Synthesis and Liquid Crystalline Studies of 2,4-bis(4'-n-nonyloxybenzoyloxy)benzylidene-4''-n-alkoxyaniline

Hamad, Wali and Salih, Shalaw (2017) Synthesis and Liquid Crystalline Studies of 2,4-bis(4'-n-nonyloxybenzoyloxy)benzylidene-4''-n-alkoxyaniline. ARO-The Scientific Journal of Koya University, 5 (1). pp. 24-29. ISSN 24109355

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Official URL: http://dx.doi.org/10.14500/aro.10210

Abstract

In this paper, a series of new Schiff-bases: 2,4-bis(4’‑n‑nonyloxy -benzoyloxy)benzylidene-4’’-n-alkyloxyaniline (DC9An) were synthesized. The characterization of compounds was achieved through using (ultra violet, infrared, 1H-nuclear magnetic resonance) measurements. This series comprises 10 members differ by the length of n-alkoxy chain (i.e., OCnH2n+1, n=1-10). Their liquid crystalline properties were studied using differential scanning calorimetry and polarizing optical microscopy. The lower series such as n=1-3 are purely nematogenic liquid crystals, but the other means (n=4-7) have nematic and smectic phases (SmC and SmA). The higher members (n=8-10) are purely smectogenic liquid crystals.

Item Type: Article
Uncontrolled Keywords: Liquid Crystals, Schiff basses, Nematic, Smectic.
Subjects: Q Science > QD Chemistry
Divisions: Aro-The Scientific Journal of Koya University > VOL 5, NO 1 (2017)
Depositing User: Dr Salah Ismaeel Yahya
Date Deposited: 30 Jul 2017 09:20
Last Modified: 02 Aug 2017 22:24
URI: http://eprints.koyauniversity.org/id/eprint/88

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