Low-temperature scanning tunneling microscopy on alkyl-surface-functionalized graphene oxide nanosheets reveals the formation of low-dimensional graphenite nanostructures with extended -conjugation at deoxidation temperatures above . The elimination of these alkyl chains from the surface of the nanosheets does not occur uniformly, but in distinctive patterns that correspond to the formation of an underlying network of graphenite one-dimensional “tracks” and “dots.” Atomic-resolution imaging of these graphenite regions reveals a defective honeycomb lattice characteristic of single-layer graphenes. These extended graphenite structures percolate the nanosheet even for moderate levels of deoxidation and regraphenization of the basal plane. The formation of extended conjugation indicates a regioselective rather than random elimination of the oxygen atoms and alkyl chains. The resultant network morphology allows bandlike transport of charge carriers across the sheets despite defects and disorder. The sub-meV apparent activation energies for the field-effect mobilities at low temperatures for both electrons and holes rule out significant electron-phonon coupling. This suggests a remarkable potential for electronic applications of these solution-processable functionalized graphene oxide nanosheets.
Skip Nav Destination
Article navigation
21 September 2008
Research Article|
September 15 2008
Deoxidation of graphene oxide nanosheets to extended graphenites by “unzipping” elimination
Lay-Lay Chua;
Lay-Lay Chua
a)
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
2Department of Chemistry,
National University of Singapore
, Lower Kent Ridge Road, S117543 Singapore, Singapore
Search for other works by this author on:
Shuai Wang;
Shuai Wang
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Perq-Jon Chia;
Perq-Jon Chia
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Lan Chen;
Lan Chen
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Li-Hong Zhao;
Li-Hong Zhao
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Wei Chen;
Wei Chen
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Andrew T.-S. Wee;
Andrew T.-S. Wee
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
Peter K.-H. Ho
Peter K.-H. Ho
1Department of Physics,
National University of Singapore
, Lower Kent Ridge Road, S117542 Singapore, Singapore
Search for other works by this author on:
a)
Electronic mail: [email protected].
J. Chem. Phys. 129, 114702 (2008)
Article history
Received:
May 19 2008
Accepted:
July 31 2008
Citation
Lay-Lay Chua, Shuai Wang, Perq-Jon Chia, Lan Chen, Li-Hong Zhao, Wei Chen, Andrew T.-S. Wee, Peter K.-H. Ho; Deoxidation of graphene oxide nanosheets to extended graphenites by “unzipping” elimination. J. Chem. Phys. 21 September 2008; 129 (11): 114702. https://doi.org/10.1063/1.2975330
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
DeePMD-kit v2: A software package for deep potential models
Jinzhe Zeng, Duo Zhang, et al.
CREST—A program for the exploration of low-energy molecular chemical space
Philipp Pracht, Stefan Grimme, et al.
Evaluation of the MACE force field architecture: From medicinal chemistry to materials science
Dávid Péter Kovács, Ilyes Batatia, et al.
Related Content
Width dependent edge distribution of graphene nanoribbons unzipped from multiwall carbon nanotubes
J. Appl. Phys. (May 2013)
Study on synthesis and blue emission mechanism of ZnO tetrapodlike nanostructures
J. Appl. Phys. (September 2006)
Graphene nano-ribbon formation through hydrogen-induced unzipping of carbon nanotubes
Appl. Phys. Lett. (October 2011)
Electronic transport in monolayer graphene nanoribbons produced by chemical unzipping of carbon nanotubes
Appl. Phys. Lett. (December 2009)
Synthesis of very narrow multilayer graphene nanoribbon with turbostratic stacking
Appl. Phys. Lett. (May 2017)