Abstract
Polychelates of few transition metals were prepared using the terpolymer ligand formed from the polymerization of anthranilic acid and thiosemicarbazide with formaldehyde (ATcF). The ligand and the polychelates were characterized by elemental analysis, magnetic susceptibilities, thermogravimetric analysis (TGA), FTIR, electronic absorption and NMR spectroscopy. The metal to ligand ratio in all the polychelate was found to be 1:2. The chemical composition and structures were proposed based on various spectrometric techniques. The thermal stability of the ligand and the polychelates were determined by TGA. In addition, the activation energy for the formation of both the terpolymer ligand and its polychelates were calculated using the TGA data by Freeman-Caroll method. The surface features of the ligand and the polychelates were analyzed by scanning electron microscopy (SEM). An in vitro biological test were performed for both the ligand and its polychelates against certain pathogenic bacteria such as Escherichia coli, Klebseilla, Staphylococcus aureus, and Pseudomonas aeruginosa and fungi viz. Aspergillus flavus, Aspergillus niger, Pencillium species, Candida albicans, Cryptococcus neoformans and Mucor species.
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Acknowledgement
The authors thank the Management & Principal of Jamal Mohamed College, Tiruchirappalli, Tamil Nadu and Dr. D. Jeyakumar, Scientist, Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu for their support and encouragement.
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Azarudeen, R.S., Ahamed, M.A.R. & Burkanudeen, A.R. Biological and thermal investigations of polychelates derived from a novel terpolymer ligand. J Polym Res 18, 1331–1341 (2011). https://doi.org/10.1007/s10965-010-9536-8
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DOI: https://doi.org/10.1007/s10965-010-9536-8