双齿三齿 Ir(III)金属配合物磷光体用于高效深蓝色有机电致发光器件。
Bis-Tridentate Ir(III) Metal Phosphors for Efficient Deep-Blue Organic Light-Emitting Diodes.
机构信息
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.
出版信息
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%。
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