Nitrogen, sulphur co-doped graphene quantum dot: An excellent sensor for nitroexplosives

Study of sensing properties of nitroexplosives using luminescent carbon based quantum dots is an interesting area of research. Enhancement in sensing ability exploiting edge states and doped states in quantum dots is an elegant approach. In the present work, graphene quantum dots (GQD) are co-doped by nitrogen and sulphur to produce large number of localized energy levels near conduction band. Remarkable enhancement in fluorescence quenching …