We report on a spatial mapping of the electronic and vibrational structure of three-dimensional (3D) nanoporous graphene architectures, which have a hierarchical pore structure. We demonstrate that the topology, curvature, and pores lead to local changes in the electronic and vibrational structure and in the hybridization states of the carbon atoms (sp(2) vs. sp(3)-like). Nitrogen substitutions in pyrrolic bonding configurations also contribute to local distortions of the planar geometry of graphene. The distortions influence the electronic density of states at the Fermi level by shifting the Dirac cone apex, opening potential avenues for applications of two-dimensional graphene in 3D devices.

Topology and doping effects in three-dimensional nanoporous graphene / Di Bernardo, Iolanda; Avvisati, Giulia; Chen, Chaoyu; Avila, José; Asensio, Maria Carmen; Hu, Kailong; Ito, Yoshikazu; Hines, Peter; Lipton-Duffin, Josh; Rintoul, Llew; Motta, Nunzio; Mariani, Carlo; Betti, Maria Grazia. - In: CARBON. - ISSN 0008-6223. - STAMPA. - 131:(2018), pp. 258-265. [10.1016/j.carbon.2018.01.076]

Topology and doping effects in three-dimensional nanoporous graphene

Di Bernardo, Iolanda;Avvisati, Giulia;Mariani, Carlo;Betti, Maria Grazia
2018

Abstract

We report on a spatial mapping of the electronic and vibrational structure of three-dimensional (3D) nanoporous graphene architectures, which have a hierarchical pore structure. We demonstrate that the topology, curvature, and pores lead to local changes in the electronic and vibrational structure and in the hybridization states of the carbon atoms (sp(2) vs. sp(3)-like). Nitrogen substitutions in pyrrolic bonding configurations also contribute to local distortions of the planar geometry of graphene. The distortions influence the electronic density of states at the Fermi level by shifting the Dirac cone apex, opening potential avenues for applications of two-dimensional graphene in 3D devices.
Chemistry (all), Condensed Matter Physics
01 Pubblicazione su rivista::01a Articolo in rivista
Topology and doping effects in three-dimensional nanoporous graphene / Di Bernardo, Iolanda; Avvisati, Giulia; Chen, Chaoyu; Avila, José; Asensio, Maria Carmen; Hu, Kailong; Ito, Yoshikazu; Hines, Peter; Lipton-Duffin, Josh; Rintoul, Llew; Motta, Nunzio; Mariani, Carlo; Betti, Maria Grazia. - In: CARBON. - ISSN 0008-6223. - STAMPA. - 131:(2018), pp. 258-265. [10.1016/j.carbon.2018.01.076]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1073665
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