Production of large graphene sheets by exfoliation of graphite under high power ultrasound in the presence of tiopronin

1. Quintana, M.
2. Grzelczak, M.
3. Spyrou, K.
4. Kooi, B.
5. Bals, S.
6. Tendeloo, G.V.
7. Rudolf, P.
8. Prato, M.