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Molecules 2012, 17(1), 645-656; doi:10.3390/molecules17010645

Synthesis of New Liquid Crystalline Diglycidyl Ethers

*  and
School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia
* Author to whom correspondence should be addressed.
Received: 3 November 2011 / Revised: 13 December 2011 / Accepted: 17 December 2011 / Published: 10 January 2012
(This article belongs to the Section Organic Synthesis)
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The phenolic Schiff bases IVI were synthesized by condensation reactions between various diamines, namely o-dianisidine, o-tolidine and ethylenediamine with vanillin or p-hydroxybenzaldehyde and subsequent reactions between these phenolic Schiff bases and epichlorohydrin to produce new diglycidyl ethers IaVIa. The structures of these compounds were confirmed by CHN, FT-IR, 1H-NMR, and 13C-NMR spectroscopy. Their thermotropic liquid crystalline behavior was studied using differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). All the diglycidyl ethers prepared exhibit nematic mesophases, except for Va and VIa, which did not show any transition mesophases, but simply flow to liquids.
Keywords: synthesis; diglycidyl ether; schiff base; liquid crystal synthesis; diglycidyl ether; schiff base; liquid crystal
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mohammed, I.A.; Hamidi, R.M. Synthesis of New Liquid Crystalline Diglycidyl Ethers. Molecules 2012, 17, 645-656.

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