Figure 7.

PMMA/PDDA/amphiphile films casted on three different surfaces (polystyrene, SiO₂, or glass) from 50 µL droplets of NPs dispersions in water. The NPs were synthesized at 0.56 M MMA, 5 mg·mL⁻¹ PDDA and 2 mM amphiphile, where the amphiphile was CTAB, DODAB, or lecithin. After synthesis, dispersions were exhaustively dialyzed. From top to bottom, PDDA amount was 0.130, 0.145, and 0.140 mg and PMMA amount was 1.3, 0.85, and 0.4 mg. The mass ratio PMMA:PDDA was 10, 6, and 3 from top to bottom. The bar corresponding to 1 cm on the bottom right holds for all films.