Synthesis and Characterization of Novel Iridium Complexes with Ligands of 2-Phenylimidazo[1,2-a]pyridine Derivatives and Application to Organic Light-emitting Diode
Phosphorescent Iridium Complexes Based on 2-Phenylimidazo[1,2-<i>a</i>]pyridine Ligands: Tuning of Emission Color toward the Blue Region and Application to Polymer Light-Emitting Devices
complex is a mixture of Ir-d, phenyl-pi, and imidazole-pi orbitals. From this viewpoint, combination of electron-withdrawing substituents on the phenyl ring with the use of another ancillary ligand enabled further blue shifts (13, 468, 499 nm; 14, 464, 494 nm). This new system based on pip is one of the rare examples of iridium complexes whose emissions can be tuned to the blue region. Preliminary polymer
Synthesis and Characterization of Novel Iridium Complexes with Ligands of 2-Phenylimidazo[1,2-<i>a</i>]pyridine Derivatives and Application to Organic Light-emitting Diode
Novel iridium complexes with ligands of 2-phenylimidazo[1,2-a]pyridines were prepared, and the emission maxima were found to be unusually dependent on the substituents on the phenyl ring. An OLED using the derivative was fabricated to show white emission.
efficient Cu-catalyzed method for direct C–N bond formation on the C-3 position of imidazo[1,2-a]pyridines is reported. The robust copper catalyst tolerated a wide range of functional groups and set the stage for the synthesis of diversely decorated imidazo[1,2-a]pyridines. Preliminary experimental results show that the reaction mechanism is consistent with C-3 radical functionalization.
报道了一种在咪唑并[1,2- a ]吡啶的C-3位置直接形成CN键的有效Cu催化方法。坚固的铜催化剂可耐受各种官能团,并为合成各种装饰的咪唑并[1,2- a ]吡啶奠定了基础。初步实验结果表明,该反应机理与C-3自由基官能化相一致。