Herein, we report an in situ synthesis of graphene quantum dots (GQDs), which have been synthesized from only starch and water and stabilize AuNPs in water.
In this study, gold nanoparticles (AuNPs) have been synthesised using ascorbic acid as a reducing agent and employed in the design of an in situ colorimetric probe for the spectrophotometric detection of N-acetyl-l-cysteine (NAC).
A dopamine-modulated nitrogen-doped graphene quantum dot (N-GQD) system was explored to develop a fluorescent sensor based on a chemical redox mechanism for the facile, sensitive and selective detection of glutathione (GSH) in biological samples.