中文关键词:主体材料双极性吡啶蓝色磷光 英文关键词:host materialsbipolarpyridineblue phosphorescent 基金项目:

作者	单位	E-mail
司娣	苏州科技大学化学生物与材料工程学院	2653344101@qq.com
谢凤鸣	苏州科技大学化学生物与材料工程学院
魏怀鑫	苏州科技大学化学生物与材料工程学院
张江坤	苏州科技大学化学生物与材料工程学院
赵鑫	苏州科技大学化学生物与材料工程学院	zhaoxinsz@126.com

摘要点击次数:1318 全文下载次数:0 中文摘要: 以4-苯甲酰吡啶、吩噁嗪和9,9-二甲基吖啶为原料,合成了两种蓝色磷光主体材料：2-溴-5-(10-吩噁嗪)苯基-4-吡啶甲酮(BPPPM),2-溴-5-(10-(9,9-二甲基)吖啶)苯基-4-吡啶甲酮(BDPPM)。并用₁H NMR、₁₃C NMR和元素分析对它们的结构进行了表征,同时系统地研究了它们的光电性质和热性质。结果表明,BPPPM和BDPPM的光学带隙(E_g)分别为3.31和2.64 eV；它们的发射峰分别位于405和435 nm,发深蓝和蓝色荧光；BPPPM和BDPPM均具有较高的三线态能级(2.70,2.65 eV),可与蓝色磷光客体材料FIrpic (2.65 eV)的三线态能级相匹配；BPPPM和BDPPM均具有匹配的HOMO(-5.45、-5.35 eV)与 LUMO能级(-2.14、-2.82 eV),且其HOMO、LUMO轨道的电子云分离突出,具有良好的双极性质；此外它们均具有较好的热稳定性和成膜性。 英文摘要: Two blue phosphorescent host materials 2-bromo-5-(10-phenoxazine) phenyl-4-pyridone (BPPPM), 2-bromo-5-(10- (9,9-dimethyl) acridinium) phenyl-4-pyridone (BDPPM) based on 4-benzoylpyridine, phenoxazine and 9,9-dimethylacridine were synthesized. The structures of BPPPM and BDPPM were characterized by 1H NMR, 13C NMR and elemental analysis. The photophysical, electrochemical and thermal properties were systematically investigated. The results show that the optical bandgaps (Eg) of BPPPM and BDPPM were 3.31 and 2.64 eV, respectively; their fluorescence emission peaks are deep blue fluorescence at 405 nm and blue fluorescence at 435 nm. Both BPPPM and BDPPM had high triplet energy levels (2.70, 2.65 eV), which matches the triplet level of the blue phosphorescent guest material FIrpic (2.65 eV). Both BPPPM and BDPPM have a very suitable HOMO (-5.45, -5.35 eV) and LUMO level (-2.14 , -2.82 eV) with a small degree of spatial overlap between the HOMO and LUMO. And they have good bipolar properties. In addition, they all have good thermal stability and film-forming properties. 查看全文查看/发表评论下载PDF阅读器 相关附件：附件1版权转让声明书附件1 -->