Fluorescent Composite Hydrogels of Metal-Organic Frameworks and Functionalized Graphene Oxide

Abstract

GO MOFs! Azobenzoic acid functionalized graphene (A-GO) can act as a structure-directing template that influences hydrogel formation together with metal?organic frameworks (MOFs). Zn2+ MOFs of pyridine derivatives work as framework linkers between the A-GO sheets (MOF?A-GO, see figure). MOF?A-GO exhibits a strong fluorescence enhancement upon gel formation. In addition, MOF?A-GO selectively recognizes trinitrotoluene.