| abstract |
The present invention relates to an amine derivative of fluorenocarbazole and its preparation method and application. The amine derivatives of fluorene carbazole provided by the present invention modify the fused-ring rigid and densely structured fluorene carbazole by introducing functional groups rich in hole sites to form a class of asymmetric, sterically hindered fluorene carbazoles. The larger amorphous compound has good thermal stability and film-forming properties. When applied to organic electroluminescent devices as hole transport materials, electron blocking layer materials and/or light emitting layer materials, it is comparable to traditional Compared with the organic electroluminescent device prepared by hole transport material, it has remarkable progress in starting voltage, luminous brightness, current efficiency, lumen efficiency and external quantum efficiency, etc. It is an ideal hole transport material and electron blocking layer. material and light-emitting layer material. |