abstract |
The present invention is a cyclometalated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1',2'-c]quinazoline ligand, or an isoelectronic or benzcyclization thereof It relates to a compound comprising a phosphorescent metal complex comprising the analogue. Further, the present invention relates to an organic light emitting diode device comprising these compounds. |