Circularly polarized organic light-emitting diodes (CP-OLEDs) have been attracting increasing attention due to the direct generation of CP light, and they show the improved image contrast and luminous efficiency in OLEDs displays. In this work, a pair of chiral Pt(II) complexes with methylbenzylisocyanide and 1,3-bis(2-pyridyl)benzene as a tridentate N^ˆC^ˆN ligand were synthesized. Both of them exhibited bright green emission in dilute acetonitrile solution, while strong orange emission in high concentration of acetonitrile solution. However, when the complexes were doped into polymethyl methacrylate, the green emission originated from intrinsic single molecule can be changed to the red emission from excimer by adjusting the doping ratios. More importantly, the amplification of CPL signal can be achieved compared with the solution state. Furthermore, the monochrome devices were fabricated by utilizing these two enantiomers as emitters.

由于直接产生CP光，圆偏振有机发光二极管（CP-OLED）已引起越来越多的关注，并且它们在OLED显示器中显示出改善的图像对比度和发光效率。在这项工作中，一对手性的Pt（II）络合物与methylbenzylisocyanide和1,3-双（2-吡啶基）苯，为三齿Ñ ^Ç合成了N配体。它们在稀乙腈溶液中均显示亮绿色发射，而在高浓度乙腈溶液中则显示强橙色发射。但是，当将配合物掺杂到聚甲基丙烯酸甲酯中时，可以通过调整掺杂比例将源自固有单分子的绿色发射变为准分子的红色发射。更重要的是，与溶液状态相比，可以实现CPL信号的放大。此外，通过利用这两种对映体作为发光体来制造单色装置。