| 초록 |
Chemically derived graphene oxide (GO) is an atomically thin sheet of graphite that is covalently decorated with oxygen-containing functional groups, either on the basal plane or at the edges, so that it contains a mixture of sp2- and sp3-hybridized carbon atoms. Thus, the conductance in GO is limited, which eventually restricts the observation of fundamental two-dimensional condensed matter effects. However, owing to its heterogeneous chemical and electronic structure, along with the fact that it can be processed in solution, GO represents a new type of solution processable, a non-stoichiometric macromolecule that can complex with many organic and inorganic systems. The manipulation of the size, shape and relative fraction of the sp2-hybridized domains of GO by reduction chemistry provides opportunities for tailoring its optoelectronic properties. For example, controlled deoxidation leads to an electrically and optically active material that is transparent and conducting. |
