L. Qingjun
2007
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Journal
Chemistry World
Abstract
A novel liquid crystalline compound named p-phenylenediamine di 4-[2-(allyloxy ethoxy) benzamide] was synthesized from allyl 2-hydroxyethylether,ethyl 4-hydroxybenzoate and p-phenylenediamine.The results showed that the optimum conditions are as follows: n(hydroxyl-acid)∶n(p-phenylenediamine)∶n(pyridine)=2.2∶1∶2 and 1 h.The morphological structure and thermal properties were characterized by POM,FT IR,DSC,()~1H NMR,XRD.This compound is a lyotropic liquid crystal containing unsaturated terminal double bond and has a texture of smectic liquid crystal.Its melting point is 283℃.The yield of the liquid crystal is 74%.