Figure 8From: Studies on Preparation of Photosensitizer Loaded Magnetic Silica Nanoparticles and Their Anti-Tumor Effects for Targeting Photodynamic TherapyFluorescence emission spectra of (a) 0.0 mg, (b) 0.2 mg, and (c) 0.6 mg PHPP-SMNPs. The excitation wavelength is 420 nmBack to article page