A study of the excited states in cytosine and guanine stacks in the Hartree-Fock and exciton approximations.
We report calculated exciton energies for the cytosine and guanine stacks obtained in the ab initio Hartree-Fock crystal orbital and exciton approximation, which includes the excited electron-hole interaction. This interaction plays an important role in the description of excited electron spectra in the low-energy region. The stacks were chosen as examples of polymers with helical symmetry.
Grobelsek-Vracko
M
M
Center for Radiological Research, College of Physicians and Surgeons, Columbia University, New York 10032.
Zaider
M
M
D004247:DNA / Q000737:chemistry; D004583:Electrons; D008433:Mathematics; D008962:Models, Theoretical; D009690:Nucleic Acid Conformation; D017785:Photons; D011066:Poly C / Q000737:chemistry*; D011068:Poly G / Q000737:chemistry*
D011068:Poly G; D011066:Poly C; D004247:DNA