Dppz‐based Ir(III) complexes show a competition between dark and bright excited states. Paulina Dreyse and colleagues in e26167 used DFT/TD‐DFT to determine geometrical and photophysical properties, and the possible applicability of these systems as new luminescent materials in Light Emitting Electrochemical Cells (LECs). The study found an improved radiative decay (bright) in presence of electron‐donor substituents. DOI: 10.1002/qua.26167

中文翻译：

---

封面图片，第120卷，第12期

基于Dppz的Ir（III）配合物显示了黑暗和明亮激发态之间的竞争。Paulina Dreyse及其同事在e26167中使用DFT / TD-DFT来确定几何和光物理性质，以及这些系统在发光电化学电池（LEC）中作为新的发光材料的适用性。研究发现，在电子供体取代基的存在下，辐射衰减（明亮）得到了改善。DOI：10.1002 / qua.26167