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Binding of nucleobases with single-walled carbon nanotubes: Theory and experiment

Das, Anindya and Sood, AK and Maiti, Prabal K and Das, Mili and Varadarajan, R and Rao, CNR (2008) Binding of nucleobases with single-walled carbon nanotubes: Theory and experiment. In: Chemical Physics Letters, 453 (4-6). pp. 266-273.

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We report the binding energy of various nucleobases (guanine (G), adenine (A), thymine (T) and cytosine (C)) with (5,5) single-walled carbon nanotube (SWNT) calculated using first-principle Hartre–Fock method (HF) together with classical force field. The binding energy without including the solvation effects of water decreases in the order G>A>T>C. The inclusion of solvation energy changes the order of binding preference to be G>T>A>C. Using isothermal titration (micro) calorimetry experiments, we also show the relative binding affinity to be T>A>C, in agreement with our calculations.

Item Type: Journal Article
Publication: Chemical Physics Letters
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Biological Sciences > Molecular Biophysics Unit
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Mar 2010 10:01
Last Modified: 19 Sep 2010 05:56
URI: http://eprints.iisc.ac.in/id/eprint/26019

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