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. 2018 Apr 25;34(34):9857–9878. doi: 10.1021/acs.langmuir.7b04379

Figure 16.

Figure 16

Amount of adsorbed QPVP-C5 (ΓQPVP-C5) onto (a) CB7% and (b) OCB7% as a function of the QPVP-C5 bulk concentration. Red and blue columns stand for the amounts of adsorbed and desorbed polycations, respectively. SEM images of freeze-dried (c) OCB7%, (d) OCB7%/QPVP-C5-5, and (e) OCB7%/QPVP-C5-12.5 surfaces after 24 h of contact with M. luteus suspensions. The scale bars correspond to 1 μm, and the circles highlight the presence of M. luteus or bacterial debris. Schematic representation of the interaction between bacteria (red solid circles) and beads after 24 h. (f) Partial adhesion of bacteria on OCB7%, (g) adsorption of bacteria and weakly charged OCB7%/QPVP-C5-5 without bacteria disruption, and (h) adhesion of bacteria onto highly charged OCB7%/QPVP-C5-12.5, followed by bacterial disruption. Reprinted from ref (110) with permission from the American Chemical Society.