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

Synthesis of New Liquid Crystalline Diglycidyl Ethers

Issam Ahmed Mohammed* email and Rashidah Mohamed Hamidi
School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia
* Author to whom correspondence should be addressed.
Received: 3 November 2011; in revised form: 13 December 2011 / Accepted: 17 December 2011 / Published: 10 January 2012
(This article belongs to the Section Organic Synthesis)
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Abstract: The phenolic Schiff bases I–VI 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 Ia–VIa. 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

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Cite This Article

MDPI and ACS Style

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

AMA Style

Mohammed IA, Hamidi RM. Synthesis of New Liquid Crystalline Diglycidyl Ethers. Molecules. 2012; 17(1):645-656.

Chicago/Turabian Style

Mohammed, Issam Ahmed; Hamidi, Rashidah Mohamed. 2012. "Synthesis of New Liquid Crystalline Diglycidyl Ethers." Molecules 17, no. 1: 645-656.

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