Conformational tuning of magnetic interactions in metal-DNA complexes.
The alignment of Cu(2+) ions along a modified DNA helix is studied with either hydroxypyridone (H) or bis(salicylaldehyde)ethylenediamine (S-en) metalated base pairs (MBPs). The conformational motion of H-MBP leads to the interlinking of the H-MBPs by an extended Cu-O network that is ferromagnetic, whereas the conformational freezing of the S-en-MBP leads to an ordered pairwise-stacked arrangement that is weakly antoferrimagnetic.
Mallajosyula
Sairam S
SS
Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Campus, Bangalore 560 064, India.
Pati
Swapan K
SK
D020029:Base Pairing; D003300:Copper / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D008280:Magnetics; D036103:Nanotechnology; D009690:Nucleic Acid Conformation
D003300:Copper; D004247:DNA