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Abstract
Three new compounds, [Ru(Hdpa)2PyIP](ClO4)2·2H2O (1) [Ru(Hdpa)2FyIP](ClO4)2·2H2O (2) and [Ru(Hdpa)2IIP](ClO4)2·2H2O (3) have been synthesized and characterized by spectroscopic techniques such as elemental analysis, UV/Vis, FT-IR, 1H NMR, 13C NMR and mass spectra. The CT-DNA binding properties of 1–3 have been investigated by absorption, emission spectroscopy and viscosity measurements. Experimental results suggested that they can interact with DNA through intercalative mode with different binding strengths. These were found to promote the cleavage of plasmid DNA. Cell viability results indicated that all compounds showed significant dose dependent cytotoxicity in selected cell lines and 1 shown higher cytotoxicity than cisplatin on HeLa cells. Cellular uptake studies were studied by flow cytometry and confocal microscopy.
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