Orienting the Pore Morphology of Core-Shell Magnetic Mesoporous Silica with the Sol-Gel Temperature. Influence on MRI and Magnetic Hyperthermia Properties

The controlled design of robust, well reproducible, and functional nanomaterials made according to simple processes is key importance envision future applications. In the field porous materials, tuning nanoparticle features such as specific area, pore size morphology by adjusting parameters pH, temperature or solvent highly needed. this work, we address tunable control mesoporous silica (MS) nanoparticles (NPs) with sol-gel reaction (Tsg). We show that MS NPs alone shell covering iron oxide (IO NPs) can be easily tailored Tsg orienting either towards stellar (ST) (large radial around 10 nm) below 80 °C a worm-like (WL) (small randomly oriented pores channel network, 3–4 nm size) above °C. relaxometric magnetothermal IO@STMS IO@WLMS core having respectively morphologies are compared discussed understand role structure for MRI magnetic hyperthermia