Antibacterial activity in µg mL−1 of the SMAMP polymers (Series 2).

MIC optical = concentration at which no bacterial growth was visible, MIC OD = concentration at which the optical density measurement indicated minimal bacterial growth (calculated percentages of bacterial growth in brackets), MIC90 = concentration at which the bacterial growth was below 10% according to the optical density measurement, MBC = concentration at which the number of colony forming units was reduced by 99.9%; nd = not definable, blank cell = not determined.