Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5393594 | Computational and Theoretical Chemistry | 2014 | 8 Pages |
â¢Excess electron attachment to biomolecules is studied with LC-DFT methods.â¢LC-DFT methods can reasonably describe both dipole-bound and valence-bound anion states.â¢Transformation between dipole-bound and valence-bound anionic states is studied.
The knowledge of excess electron binding mechanisms in biomolecules is very important for molecular-level understanding of DNA damage by low-energy electrons. We here focus on two different excess electron binding mechanisms from the theoretical side; diffuse dipole-bound and valence-bound anionic states. We have found that long-range corrected (LC) density-functional theory (DFT) methods combined with a set of diffuse basis functions can reasonably describe electronic transformation processes between these two different anionic states. The applicability of the LC-DFT calculations is demonstrated for uracil, guanine-cytosine base pair, fructose, and uracil-iodide anion complex.
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