Strong correlations in highly electron-doped Zn(II)-DNA complexes.
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.
Omerzu
Ales
A
Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
Anzelak
Bernarda
B
Turel
Iztok
I
Strancar
Janez
J
Potocnik
Anton
A
Arcon
Denis
D
Arcon
Iztok
I
Mihailović
Dragan
D
Matsui
Hiroshi
H
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*
D009942:Organometallic Compounds; D004247:DNA; D015032:Zinc