Rational controlled synthesis of poly (quaternary ammonium) compounds has been used to prepare antimicrobial polymer brushes on inorganic surfaces. The systematic variation of several structural parameters of the polymeric brushes allowed us to elicit the minimum surface requirements and a probable mechanism of action for Escherichia coli cell kill. Polymeric brushes were prepared by surfaceinitiated atom transfer radical polymerization of 2-(dimethylamino)ethyl methacrylate (DMAEMA), a method that allows the molecular weight of the polymer chains to be precisely controlled as they grow from the target surface.

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How High-Density Cationic Surfaces Kill Bacterial Cells

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