| 树枝状偶氮液晶高分子(PAMAM-MMAZO)的合成及表征 |
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| 引用本文： | 陈建芳,张海良,王霞瑜.树枝状偶氮液晶高分子(PAMAM-MMAZO)的合成及表征[J].应用化学,2006,23(8):835-839. |
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| 作者姓名： | 陈建芳 张海良 王霞瑜 |
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| 作者单位： | 1. 湖南工程学院化工系,湘潭,411104;湘潭大学化学学院高分子材料研究所,湘潭,411104
2. 湘潭大学化学学院高分子材料研究所,湘潭,411104 |
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| 基金项目： | 国家自然科学基金(20374042)，湖南省自然科学基金(04JJ3044)资助项目 |
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| 摘 要： | 采用扩散法合成了1~2代树枝状聚酰胺-胺(PAMAM)。采用M ichael加成方法对树枝状PAMAM进行表面修饰,将6-(4′-甲氧基-4-氧基偶氮苯)-甲基丙烯酸已酯偶氮液晶基元(MMAZO)引入树枝状PAMAM的末端,在常温常压下合成了树枝状偶氮液晶高分子PAMAM-MMAZO。用液相色谱分析产品的纯度,用红外光谱(IR)和核磁共振谱(1H NMR)对合成产物结构进行了表征。以差热分析(DSC)和偏光显微镜(POM)研究了其液晶性。结果表明,采用此法可成功合成树枝状高分子液晶PAMAM-MMAZO,纯化后其纯度可达90%以上,产率可达45%以上。液晶性研究显示,PAMAM-MMAZO呈现出典型的向列型液晶织构。
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| 关 键 词： | 树枝状聚酰胺-胺 树枝状偶氮液晶 表面修饰 液晶性 |
| 文章编号： | 1000-0518(2006)08-0835-05 |
| 收稿时间： | 09 26 2005 12:00AM |
| 修稿时间： | 04 19 2006 12:00AM |
Synthesis and Characterization of Dendritic Azobenzene Side-Chain Liquid Crystalline Copolymer (PAMAM-MMAZO) |
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| CHEN Jian-Fang,ZHANG Hai-Liang,WANG Xia-Yu.Synthesis and Characterization of Dendritic Azobenzene Side-Chain Liquid Crystalline Copolymer (PAMAM-MMAZO)[J].Chinese Journal of Applied Chemistry,2006,23(8):835-839. |
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| Authors: | CHEN Jian-Fang ZHANG Hai-Liang WANG Xia-Yu |
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| Institution: | 1.Department of Chemistry, Hunan Institute of Engineering,Xiangtan 411104 ;2. Insititute of Polymer Science, College of Chemistry ,Xiangtan University ,Xiangtan |
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| Abstract: | Polyamidoamine dendrimers(PAMAM) of 1~2 generations(1.0G~2.0G PAMAM) were synthesized via the divergent procedure,we synthesized and the dendritic PAMAMMMAZO liquid crystal polymer was synthesized by Michael addition at room temperature under normal pressure.LC,IR,and ~(1)H NMR(revealed) that the target polymers were succesfully prepared.The liquid-crystalline behavior of the synthesized copolymers was evidenced from POM and DSC observation.The yield of the products was 45% with a purity(over) 90%.The copolymers exhibit different liquid crystalline behavior compared to MMAZO. |
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| Keywords: | PAMAM Dendritic Azobenzene Liquid crystal polymer surface chemical modification liquid crystalline property |
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