【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。更多还原

【Abstract】 Polyamidoamine dendrimers（PAMAM） of 1² generations（1.0G².0G 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 ¹H 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.更多还原