Fluorenyl functionalized boron-nitrogen fused ring luminescent material and application thereof in organic electroluminescent device

The invention discloses a fluorenyl functionalized boron-nitrogen fused ring luminescent material and an application thereof in an organic electroluminescent device. The luminescent material has a structure shown in the following formula: # imgabs 0 # imgabs 1 #. A fluorenyl functionalized modified fused ring compound containing boron atoms and nitrogen atoms is used as the luminescent material; on one hand, the relaxation degree of an excited state structure can be reduced by utilizing a rigid skeleton structure of the fused ring compound, so that relatively narrow half-peak width is realized; on the other hand, fluorenyl functional modification is utilized, interaction between adjacent molecules can be effectively prevented through large steric hindrance, and the self-quenching problem of the emitter under high concentration is inhibited. Meanwhile, by changing the types of aromatic rings or heteroaromatic rings contained in the fused ring compound, the delayed fluorescence lifetime and the half-peak width