| 초록 |
Three new iridium(Ⅲ) complexes with phenanthroline based ancillary ligands, namely, [Ir(ppy)2(dmphen)]PF6, [Ir(ppy)2(dbphen)]PF6 and [Ir(ppy)2(dpphen)]PF6 (ppy is 2-phenylpyridine, dmphen is 2,9-dimethyl-1,10-phenanthroline, dbphen is 2,9-dibutyl-1,10-phenanthroline and dpphen is 2,9-diphenyl-1,10-phenanthroline) have been synthesized and characterized. These synthesized complexes were used for the fabrication of light-emitting electrochemical cells (LECs). 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 substituting attached groups on ancillary ligands, and the complex with large bulky groups showed the best performance. |
