Fig. 4. Preserved catechol functionality in LAPDA.
Antifouling effect on a bare quartz, b PEGylated PDA, and c PEGylated LAPDA. Schematics on top illustrate bacterial colonization behavior (E. coli.) on the surfaces. Middle and bottom images are corresponding bright-field and fluorescence images, respectively. The blue arrows indicate bacterial accumulation on sites of mechanical damage in the PEGylated PDA coating. The scale bar is 200 µm.