Effects of the substitution positions of Br group in intercalative ligand on the DNA-binding behaviors of Ru(II) polypyridyl complexes

Synthesis, characterization, DNA binding properties and antioxidant activity of Ln(III) complexes with hesperetin-4-one-(benzoyl) hydrazone

“…Since the hydrophobic environment inside the DNA helix reduces the accessibility of solvent water molecules to the compound and the compound mobility is restricted at the certain binding sites, a decrease of the vibrational modes of relaxation results. The binding of the compounds to DNA leading to a significantly increase in emission intensity also agrees with those observed for other intercalators [40]. According to the Scatchard equation, a plot of r/C f versus r gave the binding constants (K b ) 2.39 Â 10 6 and 2.70 Â 10 5 M À1 from the fluorescence data for the Nd(III) complex and the free ligand, respectively.…”

Studies on thermodynamic nature of steroselectivity for ruthenium(II) polypyridyl complex binding to DNA

“…Ligand p-mpip and complex precursors Δ-and Λ-[Ru(bpy) 2 (pyridine) 2 ][O,O′-dibenzoyl-D-tartrate]•12H 2 O were prepared according to the literature [9,3]. The two isomers [10] have been fully characterized by CD spectra, mass spectrometry, elemental analysis, NMR spectroscopy and single-crystal X-ray diffraction analysis [11].…”

2-(3,5-Dibromo-4-hydroxyphenyl)imidazo[4,5-f][1,10]phenanthrolinoruthenium(II) complexes: synthesis, characterization, cytotoxicity, apoptosis, DNA-binding and antioxidant activity

“…These values are comparable to that of complexes [Ru(phen) 2 (PBIP)] 2? (5.91 9 10 4 M -1 ) (Xu et al 2004) and [Ru(bpy) 2 PIP] 2? (4.7 ± 0.2 9 10 5 M -1 ) (Wu et al 1997), but smaller than that of complexes [Ru(bpy) 2 (dppz)] 2?…”