新型含咔唑基聚芳亚胺的合成与性能研究

摘要

以3,6-二氨基-N-(2-乙基己烷基)咔唑和二溴化芳香酮为单体,经钯催化的胺基化缩聚反应合成了三种新型的含咔唑基的聚芳亚胺[PAI-C(a)～PAl-C(c)],其结构经<'1>H NMR,IR和元素分析表征.用DSC和TG对PAl-C的热性能进行了研究;用UV和荧光光谱对PAI-C的光学性能进行了研究.结果表明,PAI-C均具有较高的玻璃化转变温度(Tg>240℃)和良好的热稳定性(Td>480℃);PAI-C具有一定的光学性能.%Three novel poly( aryleneimino)s[ PAI-C(a) ～ PAI-C(c) ] containing carbazole group were synthesized by the condensation polycondensation of 3,6-diamino-N-(2-ethylhexyl) carbazole with aromatic dibromoketone via palladium-catalyzed aryl amination reaction. The structure were characterized by 1H NMR, FT-IR and elemental analysis. The thermal properties of PAI-C were investigated by DSC and TG. Optical properties of PAI-C were investigated by UV and luorescence spectrum. The result showed that the PAI-C possess high glass transition temperature ( Tg ＞ 240 ℃ ), good thermal stability with high decomposition temperatures(Td ＞480 ℃ ). PAI-C exhibited some optical property.