The acylpyrazolone proligands HQ (HQ in general, in detail: HQ = 1-phenyl-3-methyl-4-carbonylcyclohexyl-5-pyrazolone, 4-C(O)-phenyl, HQ = 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone, HQ = 1-phenyl-3-methyl-4-stearoyl-5-pyrazolone, HQ = 1-phenyl-3-stearyl-4-benzoyl-5-pyrazolone) were synthesized and reacted with (arene)Ru(II) acceptors affording complexes [(arene)Ru(Q)Cl] (arene = cymene (cym) or hexamethylbenzene (hmb)). The complexes were characterized by elemental analyses, thermogravimetric analysis-Differntial Thermal Analysis (TGA-DTA), IR spectroscopy, ESI-MS and H, and C NMR spectroscopy. Complexes [(arene)Ru(Q)Cl] where Q = Q and Q, due to the long aliphatic chain in the ligand, afford nanometric dispersions in methanol via self-assembly into micellar aggregates of dimensions 50-200 nm. The antibacterial activity of the complexes was established against Escherichia and Staphylococcus , those containing the ligands with a long aliphatic chain being the most effective. The complexes were immobilized on polystyrene by a simple procedure, and the resulting composite materials showed to be very effective against and .
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| http://dx.doi.org/10.3390/ma13030526 | DOI Listing |
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