ar0005">Photosensitizer S1 was encapsulated into a biodegradable PLGA–PVA nanoparticles.
ar0010">The nanoparticles were stabilized by PVA.
ar0015">Incorporation of magnetite nanoparticles maintained singlet oxygen generation of S1.
ar0020">An increase of singlet oxygen generation was obtained due to the heavy-atom effect.