Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Graduate Institute of Electronics Engineering and Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
Adv Mater. 2017 Sep;29(33). doi: 10.1002/adma.201702464. Epub 2017 Jun 21.
Emissive Ir(III) metal complexes possessing two tridentate chelates (bis-tridentate) are known to be more robust compared to those with three bidentate chelates (tris-bidentate). Here, the deep-blue-emitting, bis-tridentate Ir(III) metal phosphors bearing both the dicarbene pincer ancillary such as 2,6-diimidazolylidene benzene and the 6-pyrazolyl-2-phenoxylpyridine chromophoric chelate are synthesized. A deep-blue organic light-emitting diode from one phosphor exhibits Commission Internationale de l'Eclairage (CIE ) coordinates of (0.15, 0.17) with maximum external quantum efficiency (max. EQE) of 20.7% and EQE = 14.6% at the practical brightness of 100 cd m .
具有两个三齿螯合配体（双三齿）的发射铱（III）金属配合物被认为比具有三个二齿螯合配体（三齿）的配合物更稳定。在这里，合成了具有二齿卡宾钳式辅助配体如 2,6-二咪唑基苯和 6-吡唑基-2-苯氧基吡啶发色螯合配体的深蓝色发射双三齿铱（III）金属磷光体。一种深蓝色有机发光二极管（OLED）由一种磷光体制成，其显示出国际照明委员会（CIE）坐标（0.15，0.17），最大外量子效率（max.EQE）为 20.7%，在实际亮度为 100 cd m 时，EQE = 14.6%。
