Two series of (dfppy)2Ir(LN^O) with different substituents were designed and successfully synthesized and the effect of substitution at the ancillary ligand on the photophysical and electrochemical properties of (dfppy)2Ir(LN^O) were investigated. The results indicate that the electron-donating group of âOMe at LN^O increases the PL quantum efficiencies of (dfppy)2Ir(LN^O) and the electron-withdrawing groups of âCF3 and âF lower the PL quantum efficiencies.
设计并成功合成了两系列具有不同取代基的(dfppy)2Ir(LN^O)化合物,并研究了辅助
配体上取代基对(dfppy)2Ir(LN^O)的光物理和电
化学特性的影响。结果表明,在LN^O上的供电子基团—OMe提高了(dfppy)2Ir(LN^O)的PL量子产率,而吸电子基团—
CF3和—F则降低了PL量子产率。