利用自制的4-(4-三-氟甲基苯基)-2,6-双[3-(4-胺基苯氧基)苯基]吡啶(m,p-3FPAPP)作为二胺单体,3,3 ',4,4’-二苯醚四甲酸二酐(ODPA)、2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐(BPADA)作为二酐,通过常规的“两步法”合成了氟化聚吡啶酰亚胺共聚物.通过红外光谱(FT-IR)、X射线衍射(XRD)、溶解性测试、差示扫描量热分析(DSC)、热重分析(TG)、紫外光谱(UV-vis)、荧光光谱和循环伏安法,对聚合物的结构和性能进行了表征.结果表明,共聚物有着良好的溶解性能,在氮气氛中,10％失重温度(T10)为556.8℃.此外,聚酰亚胺(PI)在293 nm具有良好的紫外光吸收性能,而且在被甲磺酸质子化后460 nm附近出现非常强的蓝色荧光发射峰,最高已占轨道能级(EHOMO)和最低空轨道能级(ELUMO)分别为-5.32 eV和-2.07 eV.
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