| abstract |
The invention relates to a blue light material and a preparation method and application thereof. In the present invention, benzo[4,5]imidazo[1,2-f]phenanthrene and its derivatives have a rigid plane structure, which is beneficial to fluorescence and stability, and is beneficial to the migration of carriers. Heterocycles are beneficial to increase the triplet energy level of the molecule. The blue OLED light-emitting material prepared from benzo[4,5]imidazo[1,2-f]phenanthrene and its derivatives has the characteristics of high luminous efficiency and good stability. |