| 香蕉形共轭液晶小分子的合成 |
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| 引用本文： | 魏爱卿,郑世军. 香蕉形共轭液晶小分子的合成[J]. 郑州大学学报(理学版), 2005, 37(3): 83-85 |
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| 作者姓名： | 魏爱卿 郑世军 |
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| 作者单位： | 1. 郑州大学化学系,郑州,450001
2. 郑州大学材料科学与工程学院,郑州,450001 |
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| 基金项目： | 教育部留学回国人员科研启动基金 |
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| 摘 要： | 利用Suzuki偶合反应合成了一系列新的香蕉形共轭液晶小分子,通过元素分析、IR、1H-NMR等测试手段对其结构进行了表征.采用示差扫描量热法(DSC)和偏光显微镜等方法研究了它们的液晶性和相变温度,发现所合成的香蕉形共轭液晶小分子是双向性热致液晶,其熔点和清亮点均随分子中末端烷氧基碳原子数的增加而降低.
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| 关 键 词： | 香蕉形共轭液晶 热致液晶 合成 |
| 文章编号： | 1671-6841(2005)03-0083-03 |
| 收稿时间： | 2005-03-06 |
| 修稿时间： | 2005-03-06 |
Synthesis of Banana-shaped Conjugated Liquid Crystalline Compounds |
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| Wei Aiqing,ZHENG ShiJun. Synthesis of Banana-shaped Conjugated Liquid Crystalline Compounds[J]. Journal of Zhengzhou University(Natrual Science Edition), 2005, 37(3): 83-85 |
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| Authors: | Wei Aiqing ZHENG ShiJun |
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| Abstract: | A series of novel banana-shaped conjugated liquid crystalline compounds is synthesized by Suzuki coupling reaction. The structures of these compounds are characterized by elemental analysis, IR measurement,1^H-NMR spectroscopy. Their liquid crystalline properties and phase transition temperatures are also studied by DSC and polarizing microscope with heating stage. It is found that all the compounds go into liquid crystalline phase when heated above their melting points. The pseudo focal-conic texture can be observed. The phase transition temperatures change regularly with the increase of carbon numbers of the alkoxy. |
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| Keywords: | banana-shaped conjugated liquid crystalline compounds thermotropic liquid crystal synthesis |
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