含双偶氮生色团的环氧树脂类聚合物的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF EPOXY-BASED BISAZO POLYMERS

作　　者：殷建军[1] 叶钢[1] 王晓林[1] 和亚宁[1] 王晓工[1] 

机构地区：[1]清华大学化工系高分子研究所教育部先进材料重点实验室,北京100084

出　　处：《高分子学报》2010年第5期614-618,共5页Acta Polymerica Sinica

基　　金：国家高技术研究发展计划(863计划;项目号2007AA03Z409)资助项目

摘　　要：通过重氮偶合反应制备了含氨基取代基的假芪型偶氮小分子,并将其再配制成重氮盐,在极性溶剂中与含苯胺残基的环氧前体聚合物进行重氮偶合反应,制备了3种含双偶氮生色团的环氧树脂基聚合物BP-2A-35-CN、BP-2A-35-NT和BP-2A-35-2NT.利用仪器分析手段对其结构和热性能进行了表征;采用干涉激光辐照的方法,研究了不同取代基团对聚合物的光致表面起伏光栅形成过程的影响.研究结果表明,在相同光照条件下,BP-2A-35-CN和BP-2A-35-NT膜表面可形成正弦波形起伏光栅,但BP-2A-35-2NT膜表面无法形成明显的起伏结构.Three kinds of epoxy-based amorphous polymers containing strong push-pull biszao chromophores were obtained. For the synthesis,three aminoazobenzene derivatives with different structures were synthesized through azo-coupling reactions between 3,5-dimethylaniline and diazonium salts of 4-nitroaniline,2,4-dinitroaniline and 4-aminobenzonitrile,respectively. The bisazo polymers BP-2A-35-CN,BP-2A-35-NT and BP-2A-35-2NT were synthesized through post-polymerization azo-coupling reaction between a precursor polymer （BP-AN） and diazonium salts of the aminoazobenzene derivatives. The azo polymers were characterized by the spectroscopic methods and thermal analysis. Thin films of the bisazo polymers were used to fabricate surface-relief-gratings （SRGs） by exposing the thin films to an interference pattern of diode-pumped solid state laser beam （532 nm） at modest intensities （80 mW /cm^2 ）. SRGs can be observed on films of BP-2A-35-CN and BP-2A-35-NT,but no surface structure can be observed on film of the azo polymer with nitro groups at the opositions of azo groups （ BP-2A-35-2NT）. The result indicates that the azobenzene chromophore shows a significant effect on the SRG formation.

关 键 词：双偶氮生色团 环氧树脂 偶氮聚合物 

分 类 号：O631.3[理学—高分子化学]