一种主侧链均含偶氮基团的聚合物合成与性能研究  

Synthesis of novel azo polymer containing azobenzene groups both on main-chain and side-chain

作　　者：王东瑞[1] 王晓工[1] 

机构地区：[1]清华大学化学工程系高分子研究所,北京100084

出　　处：《中国科技论文在线》2009年第6期413-417,共5页

基　　金：高等学校博士学科点专项科研基金(20060003090)

摘　　要：偶氮聚合物在光信息存储、光电通讯等方面具有巨大的应用潜力,开发新类型的偶氮聚合物,并研究其结构-性能关系具有重要的理论意义和应用价值。设计并合成了一种新型的主侧链均含偶氮生色团的聚合物,首先通过4,4’-二羟基偶氮苯与N,N-二溴乙基苯胺之间的Williamson反应缩聚得到主链含偶氮苯基团的先驱聚合物,再通过重氮偶合反应得到目标产物,并利用核磁共振、红外光谱、紫外可见光谱、热分析等手段确认了所制备聚合物的结构。对聚合物膜的光加工实验表明,主链含有偶氮生色团的先驱聚合物不能形成明显的表面起伏光栅,而在相同实验条件下,主侧链均含偶氮苯基团的偶氮聚合物可光加工形成规整的表面起伏光栅。Azo polymers have attracted increasing interest in fundamental and application research for their promising use in many fields such as information storage. In this paper, a novel azo polymer containing azo chromophores both on main-chain and side-chain was prepared through a scheme that combined Williamson reaction and azo-coupling reaction. First, the precursor polymer with azobenzene groups on main-chain was obtained by condensation polymerization between 4,4＇-dihydroxyazobenzene and N,N-（2-bromoethyl）aniline through Williamson reaction. Then the azo polymer containing azobenzene groups both on main-chain and side-chain was prepared through an azo-coupling reaction between the precursor polymer and the diazonium salt of 4-nitroaniline. The polymers obtained were characterized by using various methods including ^1H-NMR, FT-IR, UV-vis and DSC. The polymer containing azo chromophores both on main-chain and side-chain can form regular surface relief grating （SRG） upon irradiation of interference Ar^＋ laser beam. However, the precursor polymer cannot form SRG under the same condition.

关 键 词：材料学 偶氮聚合物 合成 表面起伏光栅 

分 类 号：O631.3[理学—高分子化学]