title: A re-evaluation of how functional groups modify the electronic structure of graphene oxide.
abstract: The first 4 eV of the conduction band in graphene oxide is dominated by states from carbon sites that are in close proximity, but not directly bonded, to oxidizing functional groups. The carbon sites that are bonded directly to these groups, such as epoxide and hydroxyl groups, are much higher in energy.
authors.affiliation: Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada.
authors.forename: Adrian
authors.initials: A
authors.lastname: Hunt
authors.forename: Ernst Z
authors.initials: EZ
authors.lastname: Kurmaev
authors.forename: Alex
authors.initials: A
authors.lastname: Moewes
keywords: X-ray absorption spectroscopy; density functional theory; graphene; graphene oxide