Physisorption of Nucleobases on Graphene

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dc.creatorGowtham, S.
dc.creatorScheicher, Ralph H.
dc.creatorAhuja, Rajeev
dc.creatorPandey, Ravindra
dc.creatorKarna, Shashi P.
dc.date2007-04-11
dc.date.accessioned2026-07-07T08:13:52Z
dc.date.available2026-07-07T08:13:52Z
dc.descriptionWe report the results of our first-principles investigation on the interaction of the nucleobases adenine (A), cytosine (C), guanine (G), thymine (T), and uracil (U) with graphene, carried out within the density functional theory framework, with additional calculations utilizing Hartree--Fock plus second-order Moeller-Plesset perturbation theory. The calculated binding energy of the nucleobases shows the following hierarchy: G > T ~ C ~ A > U, with the equilibrium configuration being very similar for all five of them. Our results clearly demonstrate that the nucleobases exhibit significantly different interaction strengths when physisorbed on graphene. The stabilizing factor in the interaction between the base molecule and graphene sheet is dominated by the molecular polarizability that allows a weakly attractive dispersion force to be induced between them. The present study represents a significant step towards a first-principles understanding of how the base sequence of DNA can affect its interaction with carbon nanotubes, as observed experimentally.
dc.description7 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0704.1316
dc.identifierhttp://arxiv.org/abs/0704.1316
dc.identifierPhys. Rev. B 76, 033401 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.033401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132921
dc.subjectMaterials Science
dc.subjectSoft Condensed Matter
dc.titlePhysisorption of Nucleobases on Graphene
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