| abstract |
Use of transition metal complexes of the formula (I) in organic light-emitting diodes n n n n n n n n n n n n where: n M 1 is a metal atom; n carbene is a carbene ligand; n L is a monoanionic or dianionic ligand; n K is an uncharged monodentate or bidentate ligand selected from the group consisting of phosphines; CO; pyridines; nitriles and conjugated dienes which form a π complex with M 1 ; n n is the number of carbene ligands and is at least 1; n m is the number of ligands L, where m can be 0 or ≥1; n o is the number of ligands K, where o can be 0 or ≥1; n where the sum n+m+o is dependent on the oxidation state and coordination number of the metal atom and on the denticity of the ligands carbene, L and K and also on the charge on the ligands carbene and L, with the proviso that n is at least 1, and also n n n n n an OLED comprising these transition metal complexes, a light-emitting layer comprising these transition metal complexes, OLEDs comprising this light-emitting layer, devices comprising an OLED according to the present invention, and specific transition metal complexes comprising atb least two carbene ligands. |