Blue light-emitting polyamide and poly(amide-imide)s containing 1,3,4-oxadiazole ring in the side chain
作者:Corneliu Hamciuc、Elena Hamciuc、Mihaela Homocianu、Alina Nicolescu、Ionela-Daniela Carja
DOI:10.1016/j.dyepig.2014.10.018
日期:2015.3
exhibit film forming ability and good solubility in many organic solvents. They show high thermal stability, with decomposition temperature being above 420 °C. The optical properties, absorption and fluorescence characteristics, in solution and solid state, are investigated. Solutions of the polymers exhibit fluorescence in the blue region, having high quantum yield in the range of 38.5–58.1%, and
含有1,3,4-恶二唑环,4,4'-二氨基-4''-[2-(4-苯氧基)-5-(4-二甲基氨基苯基)-1,3,4-恶二唑的新二胺单体]合成并表征了三苯甲烷。二胺通过与各种二酰氯在N-甲基-2-吡咯烷酮中的缩聚反应,用于制备新型聚酰胺和聚(酰胺酰亚胺)。单体和聚合物的结构通过FTIR,1 H,13 C和15表征N NMR光谱。该聚合物可产生高收率,并具有成膜能力和在许多有机溶剂中的良好溶解性。它们显示出高的热稳定性,分解温度高于420°C。研究了溶液和固态下的光学性质,吸收和荧光特性。聚合物溶液在蓝色区域显示荧光,具有38.5-58.1%范围内的高量子产率,以及较大的斯托克斯位移值(110-120 nm)。将盐酸引入聚合物溶液中对光学性能有显着影响。使用Stern-Volmer方程分析了在2,5-二硝基苯酚存在下的荧光猝灭。