Kajjam Aravind Babu, Vaidyanathan Sivakumar
Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India.
Chem Rec. 2018 Mar;18(3):293-349. doi: 10.1002/tcr.201700035. Epub 2017 Sep 20.
Today organic light emitting diodes are a topic of significant academic and industrial research interest. OLED technology is used in commercially available displays, and efforts have been directed to improve this technology. Design and synthesis of phosphorescent based transition metals are capable of harvesting both singlet and triplet excitons and achieve 100 % internal quantum efficiency is an active area of research. Among all the transition metals, iridium is considered a prime candidate for OLEDs due to its prominent photophysical characteristics. In the present review, we have concentrated on the Iridium based homo and heteroleptic complexes that have dissimilar substitutions on phenylpyridine ligands, different ancillary ligands and the effect of substitution on HOMO/LUMO energies and a brief discussion and correlation on the photophysical, electrochemical and device performances of the different complexes have been reviewed for organic light emitting diodes.
如今，有机发光二极管是学术和工业研究的重要热点话题。OLED技术已应用于市售显示器，并且人们一直在努力改进这项技术。基于磷光的过渡金属的设计与合成能够捕获单线态和三线态激子并实现100%的内量子效率，这是一个活跃的研究领域。在所有过渡金属中，铱因其突出的光物理特性而被认为是OLED的主要候选材料。在本综述中，我们专注于基于铱的均配和异配配合物，这些配合物在苯基吡啶配体上具有不同的取代基、不同的辅助配体，以及取代基对HOMO/LUMO能量的影响，并且对不同配合物的光物理、电化学和器件性能进行了简要讨论和关联，以用于有机发光二极管。
