“…20 MSNs are biocompatible and biodegradable 21,22 materials with a porous structure, large specific surface area and volume, chemically and thermally stable, and can be equipped with molecular gates (also known as gatekeepers or nanovalves) able to regulate cargo delivery in response to predefined physical, chemical, or biochemical stimuli. 23−27 Thanks to their advantageous properties, MSNs have become one of the most important platforms for drugcontrolled release 28,29 and they have been used in many biomedical applications, such as drug, 30,31 gene, 32,33 and RNA 34,35 delivery; bioimaging; 36,37 chemical communication; 38,39 stigmergy; 40,41 nanomotors; 42,43 biosensing; 44,45 and theragnostic 46 and tissue engineering. 47,48 MSNs can be functionalized not only with molecular gates but also with other organic ligands and inorganic nanoparticles to provide them versatile chemical and physical properties, 49,50 which made them extraordinary versatile nanoplatforms.…”