| abstract |
The invention relates to an organic electroluminescence material and its preparation method and application, belonging to the technical field of organic electroluminescence materials. The present invention uses tetraphenylethylene and acridine as the skeleton and comprises the conjugated polymer of TADF monomer as the organic electroluminescent material, compared with the prior art; the conjugated polymer organic electroluminescent material of the present invention, with Tetraphenylethylene and acridine are the skeleton, mixed with TADF monomer structure, the structure is novel, and the photoelectric performance is excellent. The fluorescence quantum efficiency of the film is between 45% and 83%, and the external quantum efficiency of the prepared device reaches up to 4.8%. The Mw of the TADF conjugated polymer prepared by the present invention: 7K-11K, the dispersion coefficient is 1.6-2.0, the thermodynamic performance is stable, has good solubility, and the device can be prepared by printing, printing, and spin coating, and is suitable as a large-area flat plate The light-emitting layer of the display. |