Organic-Inorganic Hybrid Hollow Mesoporous Organosilica Nanoparticles for Efficient Ultrasound-Based Imaging and Controlled Drug Release

Figure 1

TEM (a and b) and SEM (c) images of HPMOs obtained by alkaline etching in 0.6 M Na₂CO₃ solution at 80°C for 1 h.

(a)

(b)

(c)