| 초록 |
Light-emitting electrochemical cells (LECs) are the next generation of optoelectronic devices and commonly employ ionic transition metal complexes (iTMCs) or conjugated polymers as the light-emitting material. LECs typically consist of ionic species, which are fabricated in solution and utilize air-stable electrodes, allowing the nonrigorous encapsulation of the devices. Recently, LECs based on iTMCs have attracted significant attention owing to their various advantages over polymer-based LECs. Here in, two new cationic heteroleptic iridium(III) complexes with imidazole based-ancillary ligands, namely, [Ir(ppy)2(mphb)]PF6 (complex1) and [Ir(ppy)2(immp)]PF6 (complex2) (ppy is 2-phenylpyridine, mphb is 2-(4-Methyl-2-pyridyl)-1H-benzimidazole, immp is 2-(2-Imidazolyl)-4-methylpyridine and PF6 is hexafluorophosphate) have been synthesized and characterized by various spectroscopic methods. These synthesized complexes were used for the fabrication of single component light-emitting electrochemical cells (LECs). The materials based on these complexes resulted in yellow emission and yellowish-green emission for complex 1 and complex 2, respectively. |
