Organic light-emitting material based on spiral thioxanthene as well as preparation method and application of organic light-emitting material

The invention discloses an organic light-emitting material based on spiral thioxanthene as well as a preparation method and application thereof, and belongs to the technical field of organic photoelectric materials. According to the organic light-emitting material, electron donors such as spirothioxanthene (9, 9 '-spirobis [thioxanthene], spiro [thioxanthene-9, 9'-xanthene] and 10-phenyl-spiro [acridine-9, 9 '-thioxanthene]) serve as cores, aromatic substituent groups are introduced to the positions 2 and 7 of the electron donors, the spirothioxanthene structure can adjust the property of intramolecular charge transfer, and multi-channel charge transfer is achieved; the exciton utilization rate is improved and the working life is prolonged. According to the preparation method disclosed by the invention, diphenyl sulfide and the like are taken as raw materials, and the 2, 7-substituted spiral thioxanthene organic light-emitting material is prepared on a large scale. The luminescent material can be applied to a