| abstract |
The invention provides a blue-light thermally activated delayed fluorescent material, a preparation method thereof, and an electroluminescent device. The invention combines two electron donating groups on the basis of the ketone structure to synthesize a series of The blue light thermally activated delayed fluorescent material with different state energy levels, high luminous efficiency, and fast reverse intersystem crossing constant, which contains aromatic organic groups of nitrogen elements. The blue-light thermally activated delayed fluorescent material is prepared through a reaction solution preparation step, a blue-light thermally activated delayed fluorescent material synthesis step, an extraction step, and a separation and purification step, and is applied to a light-emitting layer of an electroluminescent device, and the light-emitting layer has a relatively low monolithic effect. The triplet energy level is different, thereby solving the problem of low theoretical quantum efficiency of the fluorescent material, thereby improving the luminous efficiency of the electroluminescent device. |