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含偶氮甲碱基团的新二醇的合成及液晶性能。

Synthesis and liquid crystalline properties of new diols containing azomethine groups.

机构信息

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

出版信息

Molecules. 2010 Apr 30;15(5):3260-9. doi: 10.3390/molecules15053260.

DOI:10.3390/molecules15053260
PMID:20657475
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6257448/
Abstract

A series of new mesogenic azomethine diols were successfully synthesized by condensation reactions between various chloroalkanols and N,N'-bis(4-hydroxy)-benzylidene-o-toluidine (1). The structures of these compounds were confirmed by CHN, FT-IR, (1)H-NMR, and (13)C-NMR spectrophotometer. Their thermotropic liquid crystalline behavior was studied using differential scanning calorimetry (DSC) and polarizing optical microscope (POM). 4,4'-di(4-Hydroxybutoxy)-N-benzylidine-o-tolidine (2a) does not exhibit liquid crystalline properties. A nematic texture was observed for mesogenic diols 2b, and 2d, whereas the diol 2c exhibits a smectic mesophase. The increase of terminal alkyl chain in these mesogenic diols leads to a decrease in the transition temperature.

摘要

一系列新型介晶偶氮甲碱二醇通过各种氯代醇与 N,N'-双(4-羟基)-苯亚甲基-o-甲苯胺(1)之间的缩合反应成功合成。这些化合物的结构通过 CHN、FT-IR、(1)H-NMR 和 (13)C-NMR 分光光度计得到确认。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。4,4'-双(4-羟基丁氧基)-N-苯亚甲基-o-甲苯胺(2a)没有表现出液晶性质。介晶二醇 2b 和 2d 表现出向列织构，而二醇 2c 则表现出近晶相。这些介晶二醇中末端烷基链的增加导致转变温度降低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/0a9dbb2ce165/molecules-15-03260-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/f62d98a17190/molecules-15-03260-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/a1ea003c16f8/molecules-15-03260-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/6f64b82fba53/molecules-15-03260-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/3df385b14357/molecules-15-03260-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/38258f74379e/molecules-15-03260-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/0a9dbb2ce165/molecules-15-03260-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/f62d98a17190/molecules-15-03260-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/a1ea003c16f8/molecules-15-03260-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/6f64b82fba53/molecules-15-03260-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/3df385b14357/molecules-15-03260-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/38258f74379e/molecules-15-03260-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e79d/6257448/0a9dbb2ce165/molecules-15-03260-g005.jpg

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