| abstract |
The present invention relates to a compound of the formula □ characterized in that it isnSubstituting at least one nitrile-substituted carbazolyl group; and its use in electronic devices, especially electroluminescent devices. When used as an electron transporting material, a hole blocking material and/or a host material for a phosphorescent emitter in an electroluminescent device, the compound of formula I can provide efficiency, stability, manufacturability or spectral characteristics of the electroluminescent device Improvement. |