Simultaneously fabrication of free and solidified N, S-doped graphene quantum dots via a facile solvent-free synthesis route for fluorescent detection

The simultaneous fabrication of free N, S-doped GQDs and solidified N, S-doped GQDs are achieved via the intermolecular dehydration and intermolecular amidation; the obtained GQDS can be used as excellent fluorescence probes for sensitive detection of Fe3+ and fingermarks.292