| 초록 |
It is well known that graphene has unique properties in terms of electronic, optical, thermal, and mechanical properties. Here, we propose an aqueous-phase top-down production of few-layer graphene flakes using synthetic polymeric stabilizers. Four different polymers with hydrophobic moieties, such as phenyl and pyrenyl groups, were synthesized on the basis of the existing water-soluble polymers, polyvinyl alcohol and dextran. Sonication of graphite with the synthetic polymers in an aqueous solution readily yielded stable graphene dispersions. The ability of the polymers to exfoliate graphene flakes from the graphite was systematically investigated, and theoretical insight into the obtained results was provided using calculation tools such as density functional theory. |
