主链含三嗪结构的聚对苯撑乙炔的合成及表征  

Synthesis and Characterigation of Poly(phenylene ethynylene)s Containing 1,3,5-Triazine Unit in the Main Chain

作　　者：罗春华[1] 董秋静[1] 王跃川[2] 程格[2] 

机构地区：[1]阜阳师范学院化学化工学院,安徽阜阳236041 [2]四川大学高分子科学与工程学院,四川成都610065

出　　处：《精细化工》2009年第5期417-421,516,共6页Fine Chemicals

基　　金：国家自然科学基金资助项目(50273021)~~

摘　　要：用含1,3,5-三嗪的二元碘代芳烃和1,4-二乙炔苯衍生物,通过Sonogashira钯催化偶联反应,合成了主链含1,3,5-三嗪结构的聚对苯撑乙炔共轭聚合物P1-P3,并用红外光谱、核磁共振氢谱和碳谱对聚合物的结构进行了表征。考察了反应时间、反应温度、单体的摩尔投料比和催化剂用量对聚合物相对分子质量及其分布的影响。紫外及荧光光谱表明,聚合物紫外最大吸收出现在320～380 nm,P2和P3的溶液荧光最大发光波长在442 nm处,且荧光较强,是一类蓝色聚合物发光材料。Poly （ phenylene ethynylene） conjugated polymers containing 1,3,5-triazine unit in the main chain were synthesized by Sonogashira coupling reaction of diiodoaromatic 1,3,5-triazine compounds with 1,4-diethynylbenzene derivatives. Their structures were characterized by FTIR,^1HNMR and ^13CNMR. The effect of synthetic condition on the relative molecular mass and its distribution of the polymer, such as reaction time, reaction temperature, molar feed ratio of monomer, and catalyst amount, was investigated. The results of UV - Vis and photoluminescenee （PL） spectra show that the UV - Vis absorbtion bands of three polymers are between 320 nm and 380 nm, and the PL of P2 and P3 exhibits strong intensity at 442 nm. As a result,the polymers of P2 and P3 will be applied in the field of blue light polymer materials.

关 键 词：SONOGASHIRA偶联反应 1 3 5-三嗪 聚对苯撑乙炔 光致发光 

分 类 号：O631[理学—高分子化学]