Geometric and electronic structure of closed graphene edges

Alejandro Lopez-Bezanilla, Jessica Campos-Delgado, Bobby G. Sumpter, Daniel L. Baptista, Takuya Hayashi, Yoong A. Kim, Hiroyuki Muramatsu, Morinobu Endo, Carlos A. Achete, Mauricio Terrones Maldonado, Vincent Meunier

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We report theoretical and experimental results on single and multiple looped graphene sheets. Experimental images of stable closed-edge structures in few-layer graphene samples obtained by high-resolution transmission electron microscopy (HRTEM) are compared with first-principles density functional theory calculations. We demonstrate that the electronic structure of a graphene nanoribbon is not significantly perturbed upon closing. By contrast, a significant modulation of the electronic structure is observed for closed-edge graphene structures deposited on a planar graphene substrate. This effect is due to an enhanced reactivity of the looped (coalesced) edges observed experimentally. The coexistence of different degrees of curvature in the graphene sheet induced by folding indicates that these materials could be used for surface chemistry engineering.

Original languageEnglish (US)
Pages (from-to)2097-2102
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume3
Issue number15
DOIs
StatePublished - Aug 2 2012

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Graphite
Graphene
Electronic structure
graphene
electronic structure
Nanoribbons
Carbon Nanotubes
closing
High resolution transmission electron microscopy
Surface chemistry
folding
Density functional theory
reactivity
curvature
Modulation
engineering
chemistry
density functional theory
modulation
transmission electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Lopez-Bezanilla, A., Campos-Delgado, J., Sumpter, B. G., Baptista, D. L., Hayashi, T., Kim, Y. A., ... Meunier, V. (2012). Geometric and electronic structure of closed graphene edges. Journal of Physical Chemistry Letters, 3(15), 2097-2102. https://doi.org/10.1021/jz300695h
Lopez-Bezanilla, Alejandro ; Campos-Delgado, Jessica ; Sumpter, Bobby G. ; Baptista, Daniel L. ; Hayashi, Takuya ; Kim, Yoong A. ; Muramatsu, Hiroyuki ; Endo, Morinobu ; Achete, Carlos A. ; Terrones Maldonado, Mauricio ; Meunier, Vincent. / Geometric and electronic structure of closed graphene edges. In: Journal of Physical Chemistry Letters. 2012 ; Vol. 3, No. 15. pp. 2097-2102.
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Lopez-Bezanilla, A, Campos-Delgado, J, Sumpter, BG, Baptista, DL, Hayashi, T, Kim, YA, Muramatsu, H, Endo, M, Achete, CA, Terrones Maldonado, M & Meunier, V 2012, 'Geometric and electronic structure of closed graphene edges', Journal of Physical Chemistry Letters, vol. 3, no. 15, pp. 2097-2102. https://doi.org/10.1021/jz300695h

Geometric and electronic structure of closed graphene edges. / Lopez-Bezanilla, Alejandro; Campos-Delgado, Jessica; Sumpter, Bobby G.; Baptista, Daniel L.; Hayashi, Takuya; Kim, Yoong A.; Muramatsu, Hiroyuki; Endo, Morinobu; Achete, Carlos A.; Terrones Maldonado, Mauricio; Meunier, Vincent.

In: Journal of Physical Chemistry Letters, Vol. 3, No. 15, 02.08.2012, p. 2097-2102.

Research output: Contribution to journalArticle

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AU - Lopez-Bezanilla, Alejandro

AU - Campos-Delgado, Jessica

AU - Sumpter, Bobby G.

AU - Baptista, Daniel L.

AU - Hayashi, Takuya

AU - Kim, Yoong A.

AU - Muramatsu, Hiroyuki

AU - Endo, Morinobu

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AU - Terrones Maldonado, Mauricio

AU - Meunier, Vincent

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Lopez-Bezanilla A, Campos-Delgado J, Sumpter BG, Baptista DL, Hayashi T, Kim YA et al. Geometric and electronic structure of closed graphene edges. Journal of Physical Chemistry Letters. 2012 Aug 2;3(15):2097-2102. https://doi.org/10.1021/jz300695h