Abstract
Three ruthenium(II) polypyridyl complexes, [Ru(phen)2(mip)](ClO4)2 (1) (phen =1,10-Phenanthroline), [Ru(bpy)2(mip)](ClO4)2 (2) (bpy = 2,2’bipyridyl) and [Ru(dmb)2(mip)](ClO4)2 (3) (dmb = 4, 4′-dimethyl 2, 2′-bipyridine), were synthesized with an intercalative ligand mip (2-morpholino-1H-imidazo[4,5-f][1, 10]phenanthroline) and characterized by 1H, 13C–NMR, IR, UV-vis, mass spectra and elemental analysis. pH effect, ion selectivity (cations, anions) and solvent sensitivity of complexes were studied. The interaction of these complexes with DNA was performed using absorption, emission spectroscopy and viscosity measurements. The experimental results indicated that the two complexes interacted with calf thymus DNA (CT-DNA) by intercalative mode. BSA (Bovine Serum Albumin) protein binding of these complexes was studied by UV-visible and fluorescence techniques. The binding capacity of these complexes was explained theoretically by molecular docking method.
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We are grateful to UGC-UPE (FAR) Program Osmania University Hyderabad, University Grant Commission (UGC) New Delhi INDIA for providing the BSR (RFSMS) Fellowship for the financial support and IICT, Hyderabad for providing Fluorescence spectroscopy instrument.
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Vuradi, R., Avudoddi, S., Putta, V. et al. Synthesis, Characterization and Luminescence Sensitivity with Variance in pH, DNA and BSA Binding Studies of Ru(II) Polypyridyl Complexes. J Fluoresc 27, 939–952 (2017). https://doi.org/10.1007/s10895-017-2029-y
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DOI: https://doi.org/10.1007/s10895-017-2029-y