Abstract: The present invention relates to the use of copper(I) complexes of the formula I where X is nitrogen or a C—R group, R is alkyl or aryl, Ar is phenyl or naphthyl, each of which is optionally substituted by from one to three radicals selected from the group consisting of alkoxy, alkylthio, alkylamino, dialkylamino, alkoxycarbonyl, alkoxysulfonyl, halogen, cyano, carboxyl, hydroxysulfonyl and nitro, and the two optionally substituted phenyl or naphthyl radicals may be joined to one another by a chemical single bond via the carbon atoms in the ?- and ??-position relative to the phosphorus atom, n is 1, 2 or 3, and Y is halogen, cyano, thiocyanato, alkoxy, aryloxy, alkylthio, arylthio, alkylamino, dialkylamino, arylamino or diarylamino, in organic light-emitting diodes (OLEDs), The present invention further relates to light-emitting layers which comprise at least one copper(I) complex of the formula I, to OLEDs which comprise at least one copper(I) complex of the formula I or an inventive light-emitti

Abstract: The present invention relates to the use of transition metal-carbene complexes in organic light-emitting diodes (OLEDs), to a light-emitting layer, to a blocking layer for electrons or excitons, or to a blocking layer for holes, each comprising these transition metal-carbene complexes, to OLEDs comprising these transition metal-carbene complexes, to devices which comprise an inventive OLED, and to transition metal-carbene complexes.

Abstract: The present invention relates to the use of polymeric materials comprising at least one transition metal-carbene complex in organic light-emitting diodes (OLEDs), polymeric materials comprising at least one selected transition metal-carbene complex, a process for preparing the polymeric materials of the invention, a light-emitting layer comprising at least one polymeric material used according to the invention or at least one polymeric material of the invention, an organic light-emitting diode (OLED) comprising the light-emitting layer of the invention and devices comprising the organic light-emitting diode of the invention.

Abstract: Process for preparing tris-ortho-metallated iridium complexes of the formula (I) where R1, R2, R3, R4, R5, R6 and X have the meanings given in the description, Ir complexes which can be prepared by the process of the invention, the use of the Ir complexes as emitter molecule in organic light-emitting diodes (OLEDs), a light-emitting layer comprising the Ir complexes, an OLED comprising this light-emitting layer and an apparatus comprising an OLED according to the present invention.