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新型液晶双缩水甘油醚的合成。

Synthesis of new liquid crystalline diglycidyl ethers.

机构信息

School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia.

出版信息

Molecules. 2012 Jan 10;17(1):645-56. doi: 10.3390/molecules17010645.

DOI:10.3390/molecules17010645
PMID:22233565
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6268144/
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, (1)H-NMR, and (13)C-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.

摘要

酚类希夫碱 I-VI 通过各种二胺（即邻二茴香胺、邻甲苯胺和乙二胺）与香草醛或对羟基苯甲醛的缩合反应以及这些酚类希夫碱与表氯醇的后续反应合成。这些新的二缩水甘油醚 Ia-VIa。这些化合物的结构通过 CHN、FT-IR、（1）H-NMR 和（13）C-NMR 光谱确认。使用差示扫描量热法 (DSC) 和偏光显微镜 (POM) 研究了它们的热致液晶行为。除了 Va 和 VIa 之外，所有制备的二缩水甘油醚都表现出向列相，Va 和 VIa 没有显示出任何过渡相，而是简单地流动到液体中。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/38e78d4a4256/molecules-17-00645-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/e1d2a698faab/molecules-17-00645-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/15139fe783bf/molecules-17-00645-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/184124fe15d1/molecules-17-00645-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/e3a7930ff85e/molecules-17-00645-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/6b3340f9d452/molecules-17-00645-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/38e78d4a4256/molecules-17-00645-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/e1d2a698faab/molecules-17-00645-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/15139fe783bf/molecules-17-00645-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/184124fe15d1/molecules-17-00645-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/e3a7930ff85e/molecules-17-00645-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/6b3340f9d452/molecules-17-00645-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6c15/6268144/38e78d4a4256/molecules-17-00645-g006.jpg

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