title: Immobilization of carbon nanotubes on functionalized graphene film grown by chemical vapor deposition and characterization of the hybrid material.
abstract: We report the surface functionalization of graphene films grown by chemical vapor deposition and fabrication of a hybrid material combining multi-walled carbon nanotubes and graphene (CNT-G). Amine-terminated self-assembled monolayers were prepared on graphene by the UV-modification of oxidized groups introduced onto the film surface. Amine-termination led to effective interaction with functionalized CNTs to assemble a CNT-G hybrid through covalent bonding. Characterization clearly showed no defects of the graphene film after the immobilization reaction with CNT. In addition, the hybrid graphene material revealed a distinctive CNT-G structure and p-n type electrical properties. The introduction of functional groups on the graphene film surface and fabrication of CNT-G hybrids with the present technique could provide an efficient, novel route to device fabrication.
authors.affiliation: Center for Nanotubes and Nanostructured Composites, BK 21 plus Physics Research Division, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Prashanta Dhoj
authors.initials: PD
authors.lastname: Adhikari
authors.affiliation: Center for Nanotubes and Nanostructured Composites, BK 21 plus Physics Research Division, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Seunghan
authors.initials: S
authors.lastname: Jeon
authors.affiliation: Center for Nanotubes and Nanostructured Composites, BK 21 plus Physics Research Division, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Myoung-Jun
authors.initials: MJ
authors.lastname: Cha
authors.affiliation: Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Dae Sung
authors.initials: DS
authors.lastname: Jung
authors.affiliation: Center for Nanotubes and Nanostructured Composites, BK 21 plus Physics Research Division, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Yooseok
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Center for Nanotubes and Nanostructured Composites, BK 21 plus Physics Research Division, Sungkyunkwan University, Suwon, 440-746, Republic of Korea; Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
authors.forename: Chong-Yun
authors.initials: CY
authors.lastname: Park
keywords: Chemical vapor deposition-grown graphene film; Hybrid characterization; Multi-walled carbon nanotubes; Self-assembled monolayer