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This review provides insight into the various ways to functionalize graphene and graphene derivatives, thereby expanding the number of potential applications for graphenebased materials. The functionalization modes can be classified according to the method and materials used and as such have been categorized as covalent functionalization, noncovalent functionalization, substitutional doping of graphene, and hybridization with nanoparticles, nanowires, and other materials. These various methods of functionalization offer various ways to expand on the current uses of graphene, that is, bioimaging or band gap opening, which can be used in electronics.
Georgakilas et al. (Tue,) studied this question.