▎ 摘　　要

NOVELTY - Graphene quantum pin comprises multiple graphene quantum dots aggregate and grow in one direction. USE - Graphene quantum pin used in biomedical imaging kit (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene quantum pin, which involves preparing a mixed solution of monosaccharide, amine compound and hydrochloric acid, heat treating the mixed solution, and dialyzing multiple times with different dialysis membranes of different molecular weight cutoffs.