Triazole derivatives and use thereof in organic light-emitting diodes (OLEDs)
The present invention relates to the use of triazole derivatives selected from the group consisting of triazolopyrimidine derivatives and triazolouracil derivatives in organic light-emitting diodes (OLEDs), an OLED comprising at least one of the organic triazole derivatives mentioned, a light-emitting layer comprising at least one of the triazole derivatives mentioned, an OLED comprising the light-emitting layer of the invention, a device comprising an OLED according to the invention and also specific novel triazole derivatives.
1. An organic light-emitting diode comprising at least one compound of the structural formula I:
where the symbols have the following meanings:
R 1 is halogen or amino, R 2 is amino;
and
(Het) Ar is aryl of the formula
where R 13 is O-alkyl or aryl.
2. An organic light-emitting diode according to claim 1 , wherein the compounds are used as emitter molecules.
3. An organic light-emitting diode according to claim 1 , wherein the compounds are used as host molecules in an emitter layer.
4. An organic light-emitting diode comprising a light-emitting layer comprising at least one compound according to claim 1 .