Synthesis, Characterization, and Liquid Crystalline Properties of Phosphazenes Incorporated (E)-3-(4-alkyloxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one

Norashikin Irdawaty, Abd Rahman and Zainab, Ngaini (2011) Synthesis, Characterization, and Liquid Crystalline Properties of Phosphazenes Incorporated (E)-3-(4-alkyloxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one. Malaysian Journal of Chemistry, 13 (1). 050-056. ISSN 1511-2292

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Abstract

A series of new substituted cyclotriphosphazenes were prepared by reaction of hexachlorocyclotriphosphazenes, (NPCl2)3 separately with one and six equivalent of (E)-3-(4-alkyloxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one (2a-c) in the presence of base to afford mono[(E)-3-(4-alkyloxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1one (3a-c) in 18-27% yields and hexakis[(E)-3-(4-alkyloxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1one (4a-c) in 71-88% yields, respectively. All the synthesized compounds were characterized via elemental analysis (CHN), FTIR, and 1H, 13C and 31P NMR. Their molecular structures were further ascertained through 1H-1H Correlation Spectroscopy (COSY) and Heteronuclear Multiple Quantum Coherence (HMQC). The texture observation was performed under polarizing optical microscopy (POM) over heating and cooling cycles.

Item Type: Article
Uncontrolled Keywords: hexachlorocyclotriphosphazenes, chalcones, alkyloxy, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak
Subjects: Q Science > QD Chemistry
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 15 Mar 2017 14:12
Last Modified: 15 Mar 2017 14:12
URI: http://ir.unimas.my/id/eprint/15582

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