Low-efficient luminescence of a novel iridium complex: Effect of auxiliary ligand of β-diketone derivative with trifluoromethyl on luminous efficiency

作者：Liu, Jian^*; Wu, Huan-Wen

来源：Journal of Luminescence, 2017, 192: 701-706.

DOI：10.1016/j.jlumin.2017.07.025

• Iridium complex
• Luminous efficiency
• Auxiliary ligand
• Phosphorescent quenching

A novel iridium complex Hr(ppy)(2)(ectfdb)1 was synthesized (ppy = 2-phenylpyridine, ectfdb = dehydrogenation1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione). Its UV-Vis, photoluminescence, quantum yield, electrochemistry, thermostability and electroluminescent performances were investigated. The studying results show that Ir(ppy)(2)(ectfdb) exhibits interestingly low-efficient luminescence. Based on density functional theory (DFT) calculation and the auxiliary ligand's molecular structure, we believe that the poor luminescence is caused by the auxiliary ligand.

• 出版日期2017-12
• 单位新余学院