FIGURE 5. Particles of polymer 1 become porous or release cargo upon UV irradiation.
a) SEM image of particles composed of polymer 1 (10 %) formulated by electrospray; b) Fluorescence quenching of Nile Red encapsulated in polymeric nanoparticles. Red diamonds, sample irradiated with UV for one minute, then maintained at 37 °C; blue squares, sample incubated at 37 °C; black triangles, particles irradiated at 800 nm at 20 °C; purple circles. particles maintained at 20 °C.
