机构地区: 厦门大学材料学院材料科学与工程系
出 处: 《厦门大学学报(自然科学版)》 2006年第2期230-233,共4页
摘 要: 利用脱氯化氢的方法合成了聚(2-甲氧基-5-己氧基)对苯乙炔(PMOHOPV)、聚(2-甲氧基-5-辛氧基)对苯乙炔(PMOCOPV)、聚(2,5-二丁氧基)对苯乙炔(PDBOPV)、聚(2,5-二己氧基)对苯乙炔(PDHOPV)、聚(2,5-二辛氧基)对苯乙炔(PDCOPV)等5种聚合物发光材料.通过核磁和红外表征了它们的结构.通过热失重曲线考察了它们的热稳定性.并从温度、催化剂、反应时间、烷氧基取代等方面考察了对聚合物溶解性、分子量、发光性能等的影响.发现可以通过催化剂的用量来改变聚合物分子量,聚合物的分子量与聚合物的溶解性成正比. Five kinds of PPV derivatives( poly( 2-methoxy-5-hexyloxy-1,4-phenylene vinylene) ( PMOHOPV), poly(2-methoxy-5-octyloxy-1,4- phenylenc vinylene) (PMOCOPV), poly(2,5-dibutyloxy-1,4-phenylene vinylene) (PDHOPV), poly(2,5-dihexyloxy-1, 4-phenylene vinylcne) (PDHOPV), poly(2,5-dioctyloxy-1,4-phenylene vinylene) (PDCOPV)) are prepared by dehydrochlorination process with p-methoxyphenol and p-diphenol as raw materials. In comparison with PPV, the five kinds of PPV derivatives can resolve in organic solvent. The influences of synthesis route and reaction conditions are investigated in detail. The structure of five kinds of PPV derivatives are characterized with FTIR and i HNMR. The thermal stability and thermo performance are obtained from TG curves. The molecular weight is measured by GPC. The influence of the amount of catalyst, reaction time, temperature, the length of side group on the solubility of polymer, molecular weight, performance of UV absorption,photoluminescence and electroluminescence is researched. It is found that the molecular weight of polymer can be changed by the amount of catalyst, at the same time, the solubility of polymer increases with the molecular weight of polymer.