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Nano Lett. 2010 Apr 14;10(4):1144-8. doi: 10.1021/nl9031617.

Atomic structure of reduced graphene oxide.

Author information

1
Max-Planck-Institut fur Festkorperforschung, Stuttgart, Germany. cristina.gomez@uam.es

Abstract

Using high resolution transmission electron microscopy, we identify the specific atomic scale features in chemically derived graphene monolayers that originate from the oxidation-reduction treatment of graphene. The layers are found to comprise defect-free graphene areas with sizes of a few nanometers interspersed with defect areas dominated by clustered pentagons and heptagons. Interestingly, all carbon atoms in these defective areas are bonded to three neighbors maintaining a planar sp(2)-configuration, which makes them undetectable by spectroscopic techniques. Furthermore, we observe that they introduce significant in-plane distortions and strain in the surrounding lattice.

PMID:
20199057
DOI:
10.1021/nl9031617

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