| 초록 |
Light-emitting electrochemical cells(LECs) are a promising type of electroluminescent device. In this study, preparation and electrical properties of LECs based on ionic transition metal complex (iTMC) containing tetrazole based-ancillary were investigated. Two new iridium(Ⅲ) complexes with tetrazole based ancillary ligands, namely, [Ir(ppy)2(tetrazole)]PF6 and [Ir(dfppy)2(tetrazole)]PF6 (ppy is 2-phenylpyridine, dfppy is 2-(2,4-difluorophenyl)pyridine, tetrazole is 5-bromo-2-(2-methyl-2H-tetrazol-5-yl)-pyridine and PF6 is hexafluorophosphate) have been synthesized and characterized. These synthesized complexes were used for the fabrication of LEC devices. The electroluminescent devices were evaluated on the basis of electroluminescence properties. Our work suggests that the light emission of cationic iridium complexes can easily tuned by substitutents on cyclometalated ligands. |
