| 초록 |
Graphite, inexpensive precursor for graphene, has attracted huge attention due to its potential applications. It is difficult to be exfoliated to yield a graphene sheets because of the van der waals forces between graphene layers. Hence, general chemical methods involve oxidation graphite in the presence of strong acids. However, these methods turns graphite into graphene oxide (GO) introducing a amount of oxidized defects. As a result, GO becomes almost electrically insulating material. To overcome this problem, we would like to introduce 4-substituted benzoic acids onto the edge of graphite in a mild reaction medium. The resultant edge-functionalized graphite (EFG) does not have oxidized defects on its plane. Then, EFG was subjected to allylic bromination with N-bromosuccinimide (NBS) to generate bromide ATRP initiating sites. The characterization of EFG will be conducted with EA, NMR, FT-IR, and TGA. The graphene structure will be confirmed with TEM, Raman and AFM. |
