Fluorescent dual-mode sensor for the determination of graphene oxide and catechin in environmental or food field

Abstract

Competitive adsorption of riboflavin and catechin for the GO surface. (A) Riboflavin emission, (B) “turn-off” effect with GO and (C) fluorescence recovery (“turn-on”) by the displacement of riboflavin from the riboflavin−GO platform by catechin.