Design and Synthesis of Blue-Emitting Cyclometalated Iridium(III) Complexes Based on Regioselective Functionalization

作者：Hisamatsu Yosuke; Aoki Shin^*

来源：European Journal of Inorganic Chemistry, 2011, 2011(35): 5360-5369.

DOI：10.1002/ejic.201100755

• Luminescence
• Iridium
• Synthesis design
• Substituent effects

A series of tris-cyclometalated IrIII complexes were prepared by regioselective substitution reactions (formylation, thiocyanation, and iodination) and subsequent conversions (cyanation, cross-coupling reaction, reduction, and oxidation) on a 2-(4'-methoxyphenyl)pyridine (mppy) ligand of fac-[Ir(mppy)3]. The introduction of electron-withdrawing groups such as CHO, CN, and sulfonyl groups (SO2Me, SO2Ar) at the 5'-position of the phenyl ring of the mppy portion induces a considerable blueshift in luminescence emission (from 495 nm to approximately 465 nm) in degassed organic solvents.

• 出版日期2011-12