Synthesis, Characterization, and DFT/TD-DFT Calculations of Highly Phosphorescent Blue Light-Emitting Anionic Iridium Complexes
作者:Davide Di Censo、Simona Fantacci、Filippo De Angelis、Cedric Klein、Nick Evans、K. Kalyanasundaram、Henk J. Bolink、Michael Grätzel、Mohammad K. Nazeeruddin
DOI:10.1021/ic701814h
日期:2008.2.1
Highly phosphorescent blue-light-emitting anionic iridium complexes (C4H9)4N[Ir(2-phenylpyridine)2(CN)2] (1), (C4H9)4N[Ir(2-phenyl-4-dimethylaminopyridine)2(CN)2] (2), (C4H9)4N[Ir(2-(2,4-difluorophenyl)-pyridine)2(CN)2] (3), (C4H9)4N[Ir(2-(2,4-difluorophenyl)-4-dimethylaminopyridine)2(CN)2] (4), and (C4H9)4N[Ir(2-(3,5-difluorophenyl)-4-dimethylaminopyridine)2(CN)2] (5) were synthesized and characterized
高磷光发蓝光的阴离子铱络合物(C4H9)4N [Ir(2-苯基吡啶)2(CN)2](1),(C4H9)4N [Ir(2-苯基-4-二甲基氨基吡啶)2(CN) 2](2),(C4H9)4N [Ir(2-(2,4-二氟苯基)-吡啶)2(CN)2](3),(C4H9)4N [Ir(2-(2,4-二氟苯基) )-4-二甲基氨基吡啶)2(CN)2](4)和(C4H9)4N [Ir(2-(3,5-二氟苯基)-4-二甲基氨基吡啶)2(CN)2](5)合成并使用NMR,UV-vis吸收,发射光谱和电化学方法进行表征。在这些配合物中,通过用2-苯基吡啶的吡啶和苯基部分上的供体和受体基团取代来调节配体,证明了颜色和量子产率的调谐方面。配合物1-5在可见光谱的蓝色区域显示强烈的光致发光最大值,并显示出非常高的磷光量子产率,