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Synthesis, characterization and DNA-binding studies of chiral ruthenium(II) complexes with 2-(5-nitrofuran-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline

✍ Scribed by Bin Sun; Yu-Chuan Wang; Chen Qian; Jun Chu; Si-Min Liang; Hui Chao; Liang-Nian Ji

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
927 KB
Volume
963
Category
Article
ISSN
0022-2860

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✦ Synopsis

Two new chiral ruthenium(II) complexes D-[Ru(bpy) 2 (nfip)] 2+ and K-[Ru(bpy) 2 (nfip)] 2+ (in which bpy = 2,2 0 -bipyridine, nfip = 2-(5-nitrofuran-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline) have been synthesized and characterized by elemental analysis, ES-MS, 1 H NMR and CD spectra. The binding properties of two chiral complexes with calf thymus DNA have been investigated by different spectrophotometric methods and viscosity measurements. A subtle but detectable difference was observed in the interaction of both enantiomer with CT-DNA, D enantiomer binds with DNA more strongly than K enantiomer. Viscosity experiments provided evidence that both D-[Ru(bpy) 2 (nfip)] 2+ and K-[Ru(bpy) 2 (nfip)] 2+ bound to DNA by intercalation.

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