▎ 摘　　要

NOVELTY - Synthesis of Janus graphene sheet layer involves cooling graphite in ice bath, adding sulfuric acid and nitric acid, adding potassium chlorate, reacting, centrifuging, washing, and drying to obtain graphite oxide (GO); heating, adding ethanol, stirring, centrifuging, washing, ventilating, and drying; adding 1-pyrene butyric acid to ethanol, stirring in polystyrene (PS), placing in ice water bath, centrifuging, drying, dissolving GO in ethanol, adding PS-pyrene, and centrifuging to obtain PS-GO; and#reacting with poly(2-dimethylaminoethyl methacrylate) and PS-GO in water, and centrifuging. USE - Method for synthesizing Janus graphene sheet layer (claimed). ADVANTAGE - The sheet layer has amphiphilic property, conductivity property, excellent performance, and high strength, and is flexible. DETAILED DESCRIPTION - Synthesis of Janus graphene sheet layer comprises: (A) placing small amount of graphite flake in the three-mouth flask, cooling in ice bath, adding concentrated sulfuric acid and fuming nitric acid, where ratio is 2:1, stirring, adding 4 batches of small amount of potassium chlorate (KClO3) every 10 minutes to generate yellow gas, reacting in ice bath for 5 days, diluting reaction liquid, centrifuging, washing with distilled water, drying overnight, vacuum drying, and dry-standing for 1 week to obtain graphite oxide (GO); (B) heating to 950 degrees C for 30 seconds, placing in 70% aqueous ethanol solution, ultrasonically dispersing for 12 hours, centrifuging, repeatedly washing with dichloromethane, collecting, ventilating, removing solvent, and vacuum drying at 40 degrees C; (C) adding 1-pyrene butyric acid in ethanol, slowly adding polystyrene (PS) balls, dispersing, placing in ice water bath for 2 hours, reacting for 3 days at 40 degrees C, centrifuging, repeatedly washing with ethanol, vacuum drying, dissolving in GO ethanol, slowly adding PS-pyrene, stirring, centrifuging, repeatedly washing, and carrying out structure characterization using transmission electron microscopy, infra-red spectroscopy, and X-ray photoelectron spectroscopy to obtain PS-GO; and (D) dissolving poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) and PS-GO in 50 ml high purity water, stirring, reacting at room temperature, and centrifuging.