title: Strong correlations in highly electron-doped Zn(II)-DNA complexes.
abstract: We present spectroscopic measurements on the first example of a chemically electron-doped metal-DNA complex. We show that a doping level as high as the stoichiometric limit of one electron per base pair can be achieved. The doped unpaired electrons occupy lowest unoccupied molecular orbital levels of the nucleobases as detected with electron spin resonance and x-ray absorption near edge structure measurements. Delocalization and strong correlations between the unpaired electrons are evident from a temperature-independent spin susceptibility and a microwave conductivity above 100 K.
authors.affiliation: Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
authors.forename: Ales
authors.initials: A
authors.lastname: Omerzu
authors.forename: Bernarda
authors.initials: B
authors.lastname: Anzelak
authors.forename: Iztok
authors.initials: I
authors.lastname: Turel
authors.forename: Janez
authors.initials: J
authors.lastname: Strancar
authors.forename: Anton
authors.initials: A
authors.lastname: Potocnik
authors.forename: Denis
authors.initials: D
authors.lastname: Arcon
authors.forename: Iztok
authors.initials: I
authors.lastname: Arcon
authors.forename: Dragan
authors.initials: D
authors.lastname: Mihailović
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Matsui
mesh_terms: D000818:Animals; D002417:Cattle; D004247:DNA / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D009942:Organometallic Compounds / Q000737:chemistry*; D013696:Temperature; D015032:Zinc / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D004247:DNA; D015032:Zinc