Structural and Spectroscopic Characterization of PM 597 Dye-Silica Core-Shell Nanoparticles

Figure 4

AFM height (contact) image (A) and amplitude (tapping) (B) of PM 570/SiO₂ CANPs (scan size is 5 μm) showing scattered particles with diameter ranging from 25 nm to approximately 200 nm and isolated islands of particles cluster with different sizes. 3D image (C) is a magnified image of the area outlined by a dashed square in (A). Obvious rims around the particles indicate that the particles are embedded in the gel. The height of the particle is shown with scale bar.