Multifunctional poly(Vinyl Amine)s bearing Azetidinium groups: one pot preparation in water and antimicrobial properties.
A simple, robust one pot procedure for the preparation of waterborne multifunctional poly(vinyl amine)s (PVAms) is presented. By post-polymerization modification of PVAm with a bifunctional coupler and functional couplers cationic, reactive azetidinium groups, and alkyl chains are introduced in the side chains of PVAms. The structure-activity relations (effect of hydrophobic and cationic modifications) of these antimicrobial polymers are studied; the minimum inhibitory concentration (MIC) against both (Gram positive and Gram negative bacteria) of the library of multifunctional poly(vinyl amine)s are determined to identify the candidates with the highest efficacy. Furthermore, the hemolytic activity-the effective concentration at which 50 and 10% of red blood cells are killed (HC50 and HC10 )-of selected polymers is determined. The ability of the polymers prepared to differentiate between microorganisms (Gram positive and Gram negative bacteria) and mammalian cells (red blood cells) is understood by comparing MIC and HC values. Finally, as an example, the best polymer is used to prepare an antimicrobial surface.
Interactive Materials Research - DWI an der RWTH Aachen e.V., and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D - 52056, Aachen, Germany.
Subrata
S
Chattopadhyay
Elisabeth Therese
ET
Heine
Helmut
H
Keul
Martin
M
Möller
D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D001384:Azetidines / Q000737:chemistry*; D001419:Bacteria / Q000187:drug effects*; D055808:Drug Discovery / Q000379:methods*; D006461:Hemolysis / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D011145:Polyvinyls / Q000737:chemistry*; D013329:Structure-Activity Relationship; D014867:Water / Q000737:chemistry*
D000890:Anti-Infective Agents; D001384:Azetidines; D011145:Polyvinyls; C534904:polyvinylamine; D014867:Water
antimicrobial polymers; azetidinium functional polymers; piperazine-based couplers; polyvinylamine; postpolymerization modification