▎ 摘　　要

NOVELTY - The method for producing indene fluorene compound-graphene OLED photoelectric display material, involves crushing the waste polystyrene and its derivatives, mixing with alkaline solution, washing with deionized water to obtain pretreated particles, adding catalyst, mixing the granules and catalyst to obtain mixture, filling with inert gas, graphitizing to obtain graphene, mixing graphene, organic solvent and dispersant, adding indenofluorene compounds, stirring evenly to obtain indene fluorene compound-graphene OLED photoelectric display material. USE - Method for producing indene fluorene compound-graphene OLED photoelectric display material (claimed). ADVANTAGE - The method enables production of indene fluorene compound-graphene OLED photoelectric display material with improved glass transition temperature, improved solubility, uniform film, high brightness and long life characteristics. DETAILED DESCRIPTION - Method for producing indene fluorene compound-graphene OLED photoelectric display material, involves using waste benzene-containing polystyrene and its derivatives as raw materials, graphitizing to obtain graphene, using indenofluorene compounds as functional additives, combining indene fluorene compound with layer interface and ring boundary of graphene to form indene fluorene compound-graphene OLED photoelectric display material. The specific process is carried out by (1) crushing the waste polystyrene and its derivatives containing the benzene ring into waste particles with volume of less than or equal to 10 cm3, mixing the waste particles with alkaline solution in solid-liquid mass ratio of 1:5-10, heating at 70-100 degrees C, insulating for 1-3 hours, washing with deionized water to remove oil from the surface, drying the obtained solid at 60-80 degrees C to obtain pretreated particles, (2) adding the resulting pretreated particles to catalyst, mixing the granules and catalyst with high pressure homogenizer to obtain mixture, (3) placing the obtained mixture in autoclave, filling with inert gas, increasing the pressure at 20-50 MPa at the rate of 0.1-1 MPa/second, heating the mixture at 500-1000 degrees C in fixed heating rate of 30-60 degrees C/minute, graphitizing for 30-120 minutes, cooling to normal temperature and pressure to obtain graphene, (4) mixing 25-40 parts mass graphene, 60-70 parts mass organic solvent and 0-5 parts mass dispersant, stirring evenly, so that graphene is evenly dispersed in organic solvent, adding indenofluorene compounds, stirring evenly to obtain indene fluorene compound-graphene OLED photoelectric display material. The mass ratio of indenofluorene compound to graphene is 1:0.6-1.