| 含柔性长链的二元胆甾相新型液晶的制备及其性能研究 |
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| 引用本文： | 产启林,冯喜增,沈永涛,彭潇. 含柔性长链的二元胆甾相新型液晶的制备及其性能研究[J]. 液晶与显示, 2005, 20(5): 361-364 |
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| 作者姓名： | 产启林 冯喜增 沈永涛 彭潇 |
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| 作者单位： | 南开大学,生物活性材料教育部重点实验室,天津,300071 |
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| 基金项目： | 天津市科技发展计划应用基础研究重点项目资助课题(No.0438011H)，教育部留学回国人员科研启动经费资助项目(No.804970) |
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| 摘 要： | 以胆甾醇和长链二元酸为原料，合成了一种柔性长链的新型小分子二元胆甾相液晶，并对其相转变过程进行了深入分析。红外光谱、核磁共振谱、质谱和元素分析证实了其分子结构，差示扫描热分析（DSC）谱图和偏光显微镜（POM）观察图像等一致表明其相转变过程完全符合胆甾相液晶的特征。说明胆甾相液晶分子的刚性大小与胆甾相液晶的形成没有直接关系，胆甾相液晶基元是其形成有序排列的决定因素。
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| 关 键 词： | 胆甾相液晶 二元液晶 螺距 柔性链 织构 胆甾醇酯 |
| 文章编号： | 1007-2780(2005)05-0361-04 |
| 修稿时间： | 2005-03-18 |
Preparation and Properties of Novel Dimesogenic Cholesteric Liquid Crystalline with Long Flexible Spacers |
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| CHAN Qi-lin,FENG Xi-zeng,SHEN Yong-tao,PENG Xiao. Preparation and Properties of Novel Dimesogenic Cholesteric Liquid Crystalline with Long Flexible Spacers[J]. Chinese Journal of Liquid Crystals and Displays, 2005, 20(5): 361-364 |
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| Authors: | CHAN Qi-lin FENG Xi-zeng SHEN Yong-tao PENG Xiao |
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| Abstract: | A novel low-molecule-weight dimesogenic cholesteric liquid crystalline(ChLC), which is a long flexible chain,was synthesized from cholesterol and long-chain diacid,then its process of phase transition was analyzed thoroughly.FT-IR,~1H NMR,MS and elemental microanalysis were used to verify the molecular structure of this new molecule.The results of DSC and POM illustrated that its phenomena in process of phase transition accorded with characters of ChLC completely.So it is concluded that the rigidity of Ch-LC molecules is nothing to do with ChLC's architecture,which is determined by cholesteric liquid crystal mesogens. |
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| Keywords: | cholesteric liquid crystalline dimesogenic liquid crystalline pitch flexible chain texture cholesteric ester |
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