| Two new iridium complexes Ir(ppy)2(pmbp)，Ir(ppy)2(phbd) were synthesized and characterized by IR spectra, elemental analysis and 1HNMR (ppy=2-phenylpyridine, pmbp=1-phenyl-3-methyl-4- benzoyl-2-pyrazolin-5-one, phbd=1-phenyl-1,3-butanedione). Their UV-vis absorption spectrogram are at 290~310 nm, which is ligand spin allowed singlet state transition absorption peak, and the absorption at 400~460 nm is metal iridium to ligands singlet and triplet state charge transition absorption peak (1MLCT and 3MLCT). Their fluorescence emission peaks are at 522 and 518 nm, which gives strong green emission. |
