▎ 摘　　要

NOVELTY - Preparing high molecular composite material based on graphene involves adding dimethylformamide solution of N-bromosuccinimide to the dimethylformamide solution of triphenylamine, stirring the reaction mixture for 4-6 hours, then concentrate by vacuum distillation to obtain 4,4'-dibromotriphenylamine, adding phosphoryl chloride to the dimethylformamide solution of 4,4'-dibromotriphenylamine, then stirring overnight, the reaction solution is cooled, extracted, dried and purified to obtain 4-(bis(4-bromophenyl)amino)benzene formaldehyde. 4,4'-dibromotriphenylamine, bis(triphenylphosphine)nickel dichloride, 4-(bis(4-bromophenyl)amino)benzaldehyde, zinc powder, 2,2'-bipyridine and dimethylformamide are sequentially added to the single-necked flask, protected by nitrogen, and heated for 24-48 hours. After the reaction is completed, anhydrous methanol is added. After standing still, suction is filtered, washed with ethanol solution, and dried to obtain polytriphenylamine. USE - Method for preparing high molecular composite material based on graphene used in the field of low power consumption information storage (claimed) ADVANTAGE - The method provides high-quality graphene by combining a liquid-phase stripping method with a solvent thermal method. The method is safe and mild preparation method for preparing graphene oxide by using Hummers method to replace potassium permanganate to replace KP. The memory device prepared by the material has high speed, large capacity, long service life, low power consumption and easy operation of the characteristics device development, which is good for fast change of digital world. Al/GO-PTPA/ITO sandwich device exhibits excellent electrical bistable under the -0.5V read voltage, the working time exceeds 105s, and has high power consumption of non-volatile resistance memory effect, with the increase of information storage requirement. DETAILED DESCRIPTION - Preparing high molecular composite material based on graphene involves adding dimethylformamide solution of N-bromosuccinimide to the dimethylformamide solution of triphenylamine, stirring the reaction mixture for 4-6 hours, then concentrate by vacuum distillation to obtain 4,4'-dibromotriphenylamine, adding phosphoryl chloride to the dimethylformamide solution of 4,4'-dibromotriphenylamine, then stirring overnight, the reaction solution is cooled, extracted, dried and purified to obtain 4-(bis(4-bromophenyl)amino)benzene formaldehyde. 4,4'-dibromotriphenylamine, bis(triphenylphosphine)nickel dichloride, 4-(bis(4-bromophenyl)amino)benzaldehyde, zinc powder, 2,2'-bipyridine and dimethylformamide are sequentially added to the single-necked flask, protected by nitrogen, and heated for 24-48 hours. After the reaction is completed, anhydrous methanol is added. After standing still, suction is filtered, washed with ethanol solution, and dried to obtain polytriphenylamine. Graphite is dispersed in the glass bottle that N,N-dimethylformamide (DMF) is housed, ultrasonically processing the glass bottle filled with graphite and N,N-dimethylformamide for 12 hours, at the same time, heating at 60-90℃ in water bath, and accelerating the dispersion, centrifuging and separating to obtain graphene dispersion liquid at room temperature, adding graphite in N,N-dimethylformamide, keeping the mixture at room temperature for 1-3h, adding solid mixture of concentrated sulfuric acid and graphite powder and sodium nitrate, adding potassium ferrate, centrifuging the mixture 8000- 10000rpm, collecting the pasty product by repeatedly centrifuging and washing with water until the pH value of the supernatant is close to 7, dispersing graphene oxide, anhydrous tetrahydrofuran, 4-(Dimethylamino)pyridine, N,N'-Dicyclohexylcarbodiimide in cyanoacetic acid, reacting for 24-48h at room temperature, filtering, washing, filtering the filter cake and drying in a vacuum oven. Under an argon atmosphere, graphene oxide-carbon nanotubes, polytriphenylamine and piperidine are dispersed in dimethylformamide, and reacted at 85-90℃ for 24-48 hours, filtered, washed, and dried to obtain graphene oxide- polytriphenylamine. INDEPENDENT CLAIMS are included for: 1. A method for preparing sandwich-shaped storage device based on graphene-based polymer composite material, which involves cleaning the indium-tin-oxide coated glass substrate, drying, coating the toluene solution of the graphene oxide- polytriphenylamine prepared on the pre-cleaned indium-tin-oxide plate, obtaining the device in vacuum overnight to remove the redundant solution, finally plating the aluminum top electrode on the active layer to obtain the device aluminum/ graphene oxide- polytriphenylamine /indium-tin oxide; and 2. a sandwich-shaped memory device of organic polymer composite material based on graphene.