ABSTRACT
Chemical modication is a leading strategy with which to intrinsically modify the properties of carbon materials. Graphene, a two-dimensional, single-layer sheet of sp2 hybridized carbon atoms, has attracted tremendous attention and research interest, owing to its exceptional electronic conductivity, thermal stability, and mechanical strength. In this chapter, we focus mainly on the methodologies of chemical modication of graphene, including covalent, noncovalent, and chemical doping methods. Covalent modication involves the nucleophilic addition, electrophilic substitution, cycloaddition, and rearrangement reactions; noncovalent modication based on the van der Waals force, electrostatic interaction, hydrogen bonding, coordination bonds, or the π-π interaction. Chemical doping modication contains interstitial doping, substitutional doping, and selective doping. Many materials have been used for chemical modication of graphene, namely, polymers, metal, semiconductor, organic materials, and so on, which leads to the desired solubility and stability, tunable electric, thermal, and mechanical properties, and enhanced catalytic and biological properties. Chemical
modication of graphene via these methods offers good arenas for versatile applications, such as intelligent sensors, green energy devices, and so on.
