| abstract |
Organometallic complexes which bear at least one ligand which has a unit having a triplet energy of at least 22 000 cm −1 , a process for preparing the organometallic complexes, a mixture comprising at least one inventive organometallic complex, the use of the organometallic complexes or of the mixture in organic light-emitting diodes, the organometallic complexes preferably being used as emitter materials, and specific nitrogen- or phosphorus-substituted triphenylene derivatives and a process for their preparation. |