Simple synthesis of the unpresented magnetic nanocomposites based on the Ag coordination polymers with a good separation capacity and repeatable antibacterial activities with high performance

Two new coordination polymers namely, [(AgCN)4LS]n (1) and [(AgCN)3LN]n (2) were successfully synthesized by the reaction of AgNO3 and cyanide as a co-anion with LS[ 1,1′-(hexane-1,4-diyl)bis(3-methylimidazoline-2-thione] and LN [ 1,1,3,3-tetrakis(3,5-dimethyl-1-pyrazole)propane] ligands in order to use them for the preparation of magnetic nanocomposites with MnFe2O4 nanoparticles by an efficient and facile method. They have been well characterized by a number of techniques including, elemental analysis, FT-IR, TGA, PXRD, SEM, EDX, VSM, BET, ICP and single crystal x-ray diffraction. The considered polymers and their magnetic nanocomposites with nearly the same antibacterial activity have a high inhibitive effect on the growth of the Gram-negative (Escherichia coli, Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus, Bacillus subtilis) bacteria. By considering the simple separation and recyclable characters of the magnetic nanocomposites these materials are suitable to be used in the biological applications.