C<sup>∧</sup>N-Cyclometalated Platinum(II) Complexes with Sterically Demanding 1,2-Diarylimidazole Ligands
作者:Maik Micksch、Mario Tenne、Thomas Strassner
DOI:10.1021/om500383b
日期:2014.7.14
platinum(II) complexes with stericallydemanding 1,2-diarylimidazole ligands and β-diketonate ancillary ligands. All complexes are photophysically active emitting in the blue-green to red region (490–590 nm) of the spectrum with quantum yields up to 58%, measured in poly(methyl methacrylate) (PMMA) at room temperature. The steric demand of the imidazole ligand as well as of the β-diketonate ligand shows a
Synthesis of 1,2-Diaryl- and 1-Aryl-2-alkylimidazoles with Sterically Demanding Substituents
作者:Maik Micksch、Mario Tenne、Thomas Strassner
DOI:10.1002/ejoc.201300688
日期:2013.9
developed a new, high-yielding procedure for the synthesis of 1,2-diaryl-substituted imidazoles with stericallydemandingsubstituents at the respective ortho positions by starting from commercially available anilines and benzoic acids through the corresponding acid chlorides. The metal-free method provides access to a variety of different substituents on the phenyl rings at N-1 and C-2 as well as at
Excited-State Modification of Phenylimidazole-Based Cyclometalated Ir(III) Complexes through Secondary Bulky Aryl Substitution and Inductive Modification Enhances the Blue Emission Efficiency in Phosphorescent OLEDs
作者:So-Yoen Kim、Jin-Hyoung Kim、Sanghun Lee、Bo-Sun Yun、Ho-Jin Son、Sang Ook Kang
DOI:10.1021/acs.inorgchem.2c02890
日期:2022.11.21
compared to those of the methyl- or phenyl-substituted Ir(III) complexes (ΦPL = 30.4% for Ir(Mepim)3 and 63.7% for Ir(Phpim)3). Further modification of the secondary aryl substituent (Ir(TPhpim)3 → Ir(ITPhpim)3) through the incorporation of an isopropyl group and F substitution on the primary pim ligand (Ir(TPh/ITPhpim)3 → Ir(TPh/ITPhpim-F/F2)3) resulted in a slight decrease in the LUMO and a significant