Abstract
A series of new bioactive polymers with pendant choline analogous group was prepared by anion exchange reaction direct at the quaternary nitrogen of the polycation. Poly(4-vinyl 2-hydroxyethyl pyridinium) chloride was prepared in situ by simultaneous polymerization and quaternization of 4-vinyl pyridine with 2-chloroethanol that also acts as catalyst. The counter anion (Cl−) of the polycation was exchanged by anion exchange reaction with Br−, −OH, −SH, NO3 −, BF4 − or CF3COO−. Evidence of anion exchange was obtained by the characterization of the resultant polymers. The nature of the counter anion has profound effect on their properties including strong anion-dependent anti-microbial activity against bacteria and fungus. Polymer containing −OH was observed to be the most potent anti-microbial agent with the lowest minimum inhibitory concentration against both the classes of microbes studied.
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Sharma, S.K., Chauhan, G.S., Gupta, R. et al. Tuning anti-microbial activity of poly(4-vinyl 2-hydroxyethyl pyridinium) chloride by anion exchange reactions. J Mater Sci: Mater Med 21, 717–724 (2010). https://doi.org/10.1007/s10856-009-3932-9
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DOI: https://doi.org/10.1007/s10856-009-3932-9