Near-Infrared Phosphorescent Iridium(III) Benzonorrole Complexes Possessing Pyridine-based Axial Ligands

作者：Maurya Yogesh Kumar; Ishikawa Takahiro; Kawabe Yasunori; Ishida Masatoshi; Toganoh Motoki; Mori Shigeki; Yasutake Yuhsuke; Fukatsu Susumu; Furuta Hiroyuki^*

来源：Inorganic Chemistry, 2016, 55(12): 6223-6230.

DOI：10.1021/acs.inorgchem.6b00853

Novel near-infrared phosphorescent iridium(III) complexes based on benzo-annulated N-linked corrole analogue (termed as benzonorrole) were synthesized. The structures of the complexes revealed octahedral coordination geometries involving an organometallic iridium-carbon bond with two external axial ligands. Interestingly, the iridium(III) complex exhibits near-infrared phosphorescence at room temperature at wavelengths beyond 900 nm. The significant redshift of the emission, as compared to the corrole congener, is originated from the ligand-centered triplet character. The fine-tuning of the photophysical properties of the complexes was achieved by introducing electron-donating and electron-withdrawing substituents on the axial pyridine ligands.

• 出版日期2016-6-20