| abstract |
The present invention relates to the technical field of organic electroluminescent materials, in particular to a compound and a preparation method thereof, and an organic light-emitting display device. The compound has the structure shown below: The compounds according to the present invention can be used in organic electroluminescent devices as host materials, doping materials, hole transport layer materials, electron transport layer materials and capping layer materials, which can reduce the driving voltage and improve the luminous efficiency, brightness, heat Stability, Color Purity and Device Life. |