Highly luminescent platinum(II) complexes based on pyrazolo[1,5-f]phenanthridine-containing ligands
作者:Danli Zhao、Xun Tang、Xiang-Yang Liu、Jian Fan、Liang-Sheng Liao
DOI:10.1016/j.orgel.2017.07.002
日期:2017.11
of ZPt1-ZPt3 was investigated systematically. Organic light emitting diodes (OLEDs) based on these Pt(II) complexes were fabricated with typical device structure. The Pt(II) complexes displayed intense electroluminescence in the blue to yellowish green spectral region. Among the three Pt(II) complexes, the 3-(pyridin-2-yloxy)phenoxy-based ZPt1 compound showed the highest electroluminescence performance
设计并合成了一系列基于含吡唑并[1,5 - f ]菲啶的高发光[Pt(NˆCˆCˆN)]发射体(ZPt1,ZPt2和ZPt3)。这些Pt(II)配合物由于引入了刚性吡唑并[1,5- f],在450°C的温度下具有5%的减重温度,显示出极高的热稳定性。]菲啶基序和四齿配位框架的鲁棒性。这些Pt(II)配合物具有相同的配位基团(吡啶ˆ苯ˆ苯ˆ吡唑),但配位基团之间的连接略有不同。在ZPt1和ZPt2中,吡啶和相邻的苯基分别被氧和苯胺隔开。在ZPt3中,吡啶基刚性接枝在咔唑单元上。系统地研究了不同键对ZPt1-ZPt3的前沿轨道能量,光物理和电致发光性质的影响。基于这些Pt(II)配合物的有机发光二极管(OLED)采用典型的器件结构制造。Pt(II)配合物在蓝色到淡黄色的光谱区域显示出强烈的电致发光。在三种Pt(II)配合物中,-1,51.6流明w ^ -1,和16.4%。