| 一类新的液晶性芳香羧酸化合物的合成 |
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| 引用本文： | 唐斯甫,王志玲,徐晓辉,李自法,朱卫国,侯红卫,张淑媛.一类新的液晶性芳香羧酸化合物的合成[J].郑州大学学报(理学版),2003,35(4):77-79,91. |
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| 作者姓名： | 唐斯甫 王志玲 徐晓辉 李自法 朱卫国 侯红卫 张淑媛 |
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| 作者单位： | 1. 郑州大学化学系,郑州,450052
2. 郑州大学材料工程学院,郑州,450052 |
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| 基金项目： | 国家自然科学基金资助项目,编号 2 99740 2 6，河南省自然科学基金，河南省教育厅自然科学基金资助项目 |
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| 摘 要： | 合成了一系列新的液晶性芳香羧酸化合物，化合物的结构通过元素分析、红外光谱、核磁共振波谱和质谱等方法确证。化合物5的液晶行为用示差扫描量热法(DSC)和偏光显微镜(POM)表征。发现化合物5加热至各自的熔点以上都能形成液晶态，在液晶态可以观察到向列相的丝状织构和纹影织构，随分子中末端烷氧基碳原子数增加，化合物5的熔点(Tm)和液晶态的清亮点(Ti)呈规律性变化，液晶态温度范围变宽。
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| 关 键 词： | 芳香羧酸化合物 合成 热致性液晶 液晶态 熔点 化学结构 |
| 文章编号： | 1671-6841(2003)04-0077-03 |
Synthesis of a New Kind of Liquid Crystalline Aromatic Carboxylic Acid Compounds |
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| Tang Sifu ,Wang Zhiling ,Xu Xiaohui ,Li Zifa ,Zhu Weiguo ,Hou Hongwei ,Zhang Shuyuan.Synthesis of a New Kind of Liquid Crystalline Aromatic Carboxylic Acid Compounds[J].Journal of Zhengzhou University:Natural Science Edition,2003,35(4):77-79,91. |
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| Authors: | Tang Sifu Wang Zhiling Xu Xiaohui Li Zifa Zhu Weiguo Hou Hongwei Zhang Shuyuan |
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| Institution: | Tang Sifu 1,Wang Zhiling 1,Xu Xiaohui 2,Li Zifa 2,Zhu Weiguo 1,Hou Hongwei 1,Zhang Shuyuan 1 |
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| Abstract: | A series of novel liquid crystalline aromatic carboxylic acid compounds are synthesized. The compounds are identified by using elemental analysis,infrared spectrum,nuclear magnetion reasonance and mass spectrometry. The liquid-crystalline behavior of the compound 5 is characterized by differential scanning calorimetery(DSC) and polarizing optical microscopy(POM). It is found that the compound 5 go into liquid crystal phase when heated to their T _m. The threaded texture and Schlieren texture of nematic phase can be observed. Both melting point( T _m) and isotropization temperature( T _i) of compound 5 change regularly with the carbon numbers of the end alkoxy groups increasing,accordingly,the temperature range of the liquid crystal phase of the compound 5 becomes wide. |
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| Keywords: | aromatic carboxylic acid compound thermotropic liquid crystal synthesis |
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