Electronic structure of genomic DNA: a photoemission and X-ray absorption study.
The electronic structure of genomic DNA has been comprehensively characterized by synchrotron-based X-ray absorption and X-ray photoelectron spectroscopy. Both unoccupied and occupied states close to the Fermi level have been unveiled and attributed to particular sites within the DNA structure. A semiconductor-like electronic structure with a band gap of approximately 2.6 eV has been found at which the pi and pi* orbitals of the nucleobase stack make major contributions to the highest occupied and lowest unoccupied molecular orbitals, respectively, in agreement with previous theoretical predictions.
Kummer
Kurt
K
Institut für Festkörperphysik, Technische Universität Dresden, 01062 Dresden, Germany.
Vyalikh
Denis V
DV
Gavrila
Gianina
G
Preobrajenski
Alexei B
AB
Kick
Alfred
A
Bönsch
Martin
M
Mertig
Michael
M
Molodtsov
Serguei L
SL
D004247:DNA / Q000737:chemistry*; D016678:Genome; D056951:Photoelectron Spectroscopy; D011789:Quantum Theory
D004247:DNA