| abstract |
The present invention relates to an organic electroluminescent material, which has any one of the structures represented by the general formulae I to III. The organic electroluminescent materials provided by the present invention take perton and ton as the parent nucleus, and such compounds have wide band gap, high T1 energy level and appropriate highest occupied molecular orbital (HOMO) energy level. Such compounds have high thermal stability, are not easily decomposed during the sublimation process, and have a high glass transition temperature, which can maintain the phase stability of the formed film. In the present invention, by introducing a group with larger steric hindrance, the luminescent material is not easy to be crystallized and quenched, and the film-forming property is good. The organic electroluminescent material provided by the present invention is preferably used as the host material of the light-emitting layer in the organic electroluminescent device. |