Magnetic hollow spheres of periodic mesoporous organosilica and Fe3O4 nanocrystals:: Fabrication and structure control

Periodic mesoporous organosilica magnetic hollow spheres (PMO-MHS) are synthesized. The particle size, shell wall thickness and saturation magnetization value of PMO-MHS are tunable by varying the ratio of templating agent to magnetic nanoparticles. The high saturation magnetization ensures that these functional mesoporous hollow spheres can be efficient materials for targeted drug delivery assisted by magnetic fields.