Introduction of new ancillary ligands to the iridium complexes having 2,3-diphenylquinolinato ligands for OLED
作者:Hyun Shin Lee、So Youn Ahn、Hyun Sue Huh、Yunkyoung Ha
DOI:10.1016/j.jorganchem.2009.06.003
日期:2009.9
prepared, where R represents C6H5, C6H4CH3 and C6H4Cl. These ligands were chelated to the iridium center to yield a new series of the iridium complexes, Ir(4-Me-2,3-dpq)2(przl-R). The X-ray crystal structure of Ir(4-Me-2,3-dpq)2(przl-C6H4Cl) was determined. The electrochemical and luminescence properties of the iridium complexes were investigated. The effect of the przl-substituents on the emission colors
我们研究了辅助配体(AL)对其配合物Ir(4-Me-2,3-dpq)2(AL)的发射颜色和发光效率的影响,其中4-Me-2,3-dpq表示4-甲基-2,3-二苯基喹啉基配体。我们期望通过将大的取代基引入配合物中来修饰辅助配体,可能会通过减少T-T ation灭来提高发光效率。此外,一些辅助配体可通过影响轨道混合时的Ir d轨道的能级来有助于其复杂发射颜色的微调。作为新的辅助配位体取代acac,这是铱络合物中的典型AL,吡唑酮基配位体4-R-5-甲基-2-苯基-2,4-二氢-吡唑-3-酮系列(przl-R ),其中R代表C 6 H如图5所示,C 6 H 4 CH 3和C 6 H 4 Cl。这些配体被螯合到铱中心以产生新系列的铱络合物Ir(4-Me-2,3-dpq)2(prz1-R)。测定了Ir(4-Me-2,3-dpq)2(prz1-C 6 H 4 Cl)的X射线晶体结构。研究了铱配合物的电