| abstract |
The invention provides a purine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic photoelectric materials. The present invention adjusts the molecular weight, π-conjugation degree, energy gap width and electrophilicity of the material by connecting different ligands on the purine main structure, which has high luminous efficiency, enhanced electron transport ability, and can effectively balance the injection of carriers. ; And not easy to crystallize, good film-forming property; the synthesis method is simple and easy to operate. The material can be used to prepare organic electroluminescent devices, especially can be used as a light-emitting layer and an electron transport layer material of the organic electroluminescent device, and the organic electroluminescent device has the advantages of high luminous efficiency and long service life. |