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Title: Binding of DNA nucleobases and nucleosides with graphene
Authors: Varghese, Neenu
Mogera, Umesha
Govindaraj, A
Das, Anindya
Maiti, Prabal K
Sood, Ajay K
Rao, C N R
Keywords: Graphene
Isothermal titration calorimetry
DNA Nucleobases
Isothermal Titration Calorimetry
Generalized Born Model
Carbon Nanotubes
Issue Date: 12-Jan-2009
Publisher: Wiley-VCH Verlag Gmbh
Citation: ChemPhysChem 10(1), 206-210 (2009)
Abstract: Interaction of two different samples of graphene with DNA nucleobases and nucleosides is investigated by isothermal titration calorimetry. The relative interaction energies of the nucleobases decrease in the order guanine (G) > adenine (A) > cytosine (C) > thy mine (T) in aqueous solutions, although the positions of C and T seem to be interchangeable. The same trend is found with the nucleosides. Interaction energies of the A-T and G-C pairs are somewhere between those of the constituent bases. Theoretical calculations including van der Wools interaction and solvation energies give the trend G > A similar to T > C. The magnitudes of the interaction energies of the nucleobases with graphene are similar to those found with single-walled carbon nonotubes.
Description: Restricted access.
Other Identifiers: 1439-4235
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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