摘要
报道了以1,2,4,5 四甲氧基苯和1,2 二溴乙烷为单体,经过AlCl3催化的烷基化聚合反应和四氯苯醌脱氢反应,合成聚2,3,5,6 四甲氧基对苯乙炔(PTMPV)的方法;考察了催化剂用量、烷基化反应时间、溶剂等因素对聚2,3,5,6 四甲氧基对苯乙烯(PTMPE)收率及分子量的影响.实验研究结果表明四氯苯醌脱氢反应是PTMPE脱氢合成PTMPV的适宜方法.采用IR和1H NMR等分析方法对PTMPV的结构进行了表征,结果表明PTMPV具有链状π 共轭结构特征.
Poly2,3,5,6tetramethoxypphenylene vinylene (PTMPV) was synthesized through dehydrogenation from poly2,3,5,6tetramethoxypphenylene ethylene(PTMPE) prepared by FriedelCrafts reaction of 1,2,4,5tetramethoxy benzene with 1,2ethylene dibromide .The effects of FriedelCrafts reaction conditions on the yield and molecular weight of PTMPE were also investigated separately.According to its IR and UVvis spectra, PTMPV shows chainextended πconjugated system and the presence of both transand cisvinylene structure.
出处
《应用科技》
CAS
2003年第6期54-56,共3页
Applied Science and Technology