Microplasma-enabled nanocarbon assembly for the diameter-selective synthesis of colloidal graphene quantum dots

A microplasma synthesis of diameter-controlled colloidal graphene quantum dots under ambient conditions is demonstrated. The GQD size was controlled by controlling the size of the organosulfate micelles. Experimental and theoretical results suggest that the organosulfate molecules within the micelles undergo nanographene nucleation and growth by solvated electrons during the synthesis. A microplasma synthesis of diameter-controlled colloidal graphene quantum dots under ambient conditions is demonstrated.