abstract |
The present invention relates to a process for the preparation of cyclometallated imidazo [1,2-f] phenanthridine and diimidazo [1,2-a: 1 ', 2'-c] quinazoline ligands, Lt; RTI ID = 0.0 > phosphodiester < / RTI > complex. The present invention also relates to an organic light emitting diode device including these compounds. |