| abstract |
The invention discloses a maleimide derivative, a preparation method and application thereof. The general structural formula of the maleimide derivatives is as shown in formula I: Wherein, R 1 and R 2 are each independently selected from arylamino groups with 6 to 30 carbon atoms, aryl groups with 6 to 30 carbon atoms, substituted aryl groups with 6 to 30 carbon atoms, 5 to 50 ring atom At least one of the substituted aromatic heterocyclic groups; R3 is selected from a hydrogen atom, an alkyl group of 1 to 20 carbon atoms, an aryl group of 6 to 30 carbon atoms, a substituted aromatic group of 6 to 30 carbon atoms At least one of a group, a substituted aromatic heterocyclic group of 5 to 50 ring atoms. The maleimide derivatives of the present invention introduce multiple electron-rich groups, and through the modification of groups with different electron-donating abilities, the highest occupied orbital energy level and the lowest empty orbital energy level can be effectively separated, which not only reduces the single weight The energy level difference between the state and the triplet state, and realize the emission of different colors. |