Highly efficient phosphorescent iridium (III) diazine complexes for OLEDs: Different photophysical property between iridium (III) pyrazine complex and iridium (III) pyrimidine complex
作者:Guoping Ge、Jing He、Haiqing Guo、Fuzhi Wang、Dechun Zou
DOI:10.1016/j.jorganchem.2009.05.037
日期:2009.9
of four new iridium (III) diazine complexes (1–4) were investigated. HOMO and LUMO energy levels of the complexes were estimated according to the electrochemical performance and the UV–Vis absorption spectra, showing the pyrimidine complexes have a larger increase for the LUMO than the HOMO orbital in comparison with the pyrazine complexes. Several high-efficiency yellow and green OLEDs based on phosphorescent