▎ 摘　　要

NOVELTY - An amphiphilic graphene quantum dot material comprises a graphene quantum dot comprising chlorine atoms attached to carbon atoms of graphite, or amino or hydroxyl group of nanosheet. The quantum dots have an average diameter of 1-5 nm (preferably 5 nm), and an average thickness of 0.6-2 nm (preferably 1 nm). The quantum dots comprise carbon, nitrogen, chlorine, oxygen, and hydrogen. USE - An amphiphilic graphene quantum dot material used as a nuclear target imaging fluorescent probe for Hela cell or other living cells (claimed). ADVANTAGE - The amphiphilic graphene quantum dot material is prepared using simple, environment-friendly, and inexpensive method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the amphiphilic graphene quantum dot material, comprising: (A) slowly adding 0.05-0.5 g of 1,5-diaminonaphthalene to 10-50 mL solvent mixture of ethanol and chloroform while ultrasonically stirring for 10-50 minutes, transferring the solution to not less than 50 mL PTFE reaction kettle, and performing hydrothermal reaction at 120-230 degrees C for 6-24 hours to obtain an amphiphilic graphene quantum dot product; (B) naturally cooling the amphiphilic graphene quantum dot product, filtering in 220 nm micropore filter membrane, transferring filtrate to a dialysis bag, carrying out dialysis, and carrying out separation and purification to obtain amphiphilic graphene quantum dot solution; and (C) carrying out conversion treatment, rotary evaporating the solvent, adding deionized water, and ultrasonically stirring for 10-50 minutes to dissolve the quantum dots in water.