▎ 摘　　要

NOVELTY - Preparing an amphiphilic graphene quantum dot material involves mixing a carbon source and a nitrogen dopant to form a mixture, heating the mixture, and carbonizing the mixture into a brown-black product to obtain a crude product of the amphiphilic graphene quantum dot material, where the carbon source is citrate, and nitrogen source is amino alcohol, cooling the crude product of the amphiphilic graphene quantum dot material, and dispersing the cooled crude product of the amphiphilic graphene quantum dot material in a dispersion solvent to obtain a uniform amphiphilic graphene quantum dot material dispersion A. The antisolvent is added to the graphene quantum dot dispersion liquid A to obtain a precipitated product, centrifuged the precipitated product, and dispersed the centrifuged product in the dispersion solvent again to obtain a uniform amphiphilic graphene quantum dot dispersion B. USE - Method for preparing amphiphilic graphene quantum dot material. ADVANTAGE - The method enables to prepare amphiphilic graphene quantum dot material that regulates the aggregation degree and aggregation state of amphiphilic graphene quantum dot materials, and achieves fluorescent coding mark based on fluorescence intensity ratio, and high fluorescence quantum yieldand good optical, thermal and chemical stability. DETAILED DESCRIPTION - Preparing an amphiphilic graphene quantum dot material involves mixing a carbon source and a nitrogen dopant to form a mixture, heating the mixture, and carbonizing the mixture into a brown-black product to obtain a crude product of the amphiphilic graphene quantum dot material, where the carbon source is citrate, and nitrogen source is amino alcohol, cooling the crude product of the amphiphilic graphene quantum dot material, and dispersing the cooled crude product of the amphiphilic graphene quantum dot material in a dispersion solvent to obtain a uniform amphiphilic graphene quantum dot material dispersion A. The antisolvent is added to the graphene quantum dot dispersion liquid A to obtain a precipitated product, centrifuged the precipitated product, and dispersed the centrifuged product in the dispersion solvent again to obtain a uniform amphiphilic graphene quantum dot dispersion B. The amphiphilic graphene quantum dot dispersion B is dried to obtain a purified amphiphilic graphene quantum dot material.