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Citation: YAO Wei, WU Bao-Yan, GAO Li-Hua, WANG Ke-Zhi. DNA-Binding Studies of a Fluorenyl-Containing Ru(II) Complex[J]. Acta Physico-Chimica Sinica, ;2007, 23(02): 237-241. doi: 10.3866/PKU.WHXB20070219 shu

DNA-Binding Studies of a Fluorenyl-Containing Ru(II) Complex

1.
Department of Chemistry, Beijing Normal University, Beijing 100875, P. R. China; 2School of Chemical and Environment Engineering, Beijing Technology and Business University, Beijing 100037, P. R. China

Received Date: 7 August 2006
Available Online: 30 January 2007

A ruthenium(II) complex of [Ru(bpy)2(Hfip)](ClO4)2 (bpy=2,2′-bipyridine, Hfip=2-(9H-fluoren-2-yl)-1H-imidazolo-[4,5-f]-[1,10]-phenanthrolin) was synthesized. The DNA binding properties of the complex were studied by means of electronic absorption and emission spectroscopic titrations, steady-state emission quenching by Fe(CN)4-6, viscosity measurements, DNA competitive binding with ethidium bromide, and thermal denaturation of DNA. The results indicated that the complex bound to calf-thymus DNA in an intercalative mode with a binding constant of 8.6×105 L·mol-1 in the presence of 50 mmol·L-1 NaCl solution.
- Ruthenium (II);DNA;Phenanthroline; UV-Vis spectrum; Emission spectrum
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