METAL COMPLEXES, COMPRISING CARBENE LIGANDS HAVING AN O-SUBSTITUTED NON-CYCLOMETALATED ARYL GROUP AND THEIR USE IN ORGANIC LIGHT EMITTING DIODES

摘要

Cyclometallated Ir complex comprising three N,N diaryl substituted carbene ligands, bearing substituents in the 2 position of the non-cyclometallated aryl ring;an organic electronic device, preferably an organic light-emitting diode (OLED), comprising at least one cyclometallated Ir complexas described above, a light-emitting layer comprising said cyclometallated Ir complex preferably as emitter material, preferably in combination with at least one host material, use of said cyclometallated Ir complex in an OLED and an apparatus selected from the group consisting of stationary visual display units, mobile visualdisplay units, illumination units, units in items of clothing, units in handbags, units in accessoires, units in furniture and units in wallpaper comprising said organic electronic device, preferably said OLED, or said light-emitting layer. The present invention further relates to a process for the preparation of said cyclometallated Ir complex.