Periodic Mesoporous Organosilicas (PMOs)

Periodic mesoporous organosilicas (PMOs) are prepared using bridged silsesquioxanes as the precursors and surfactants as the structure-directing species via sol-gel route. They are novel functional materials with many excellent and special properties, such as high surface area, ordered pore channel, sharp pore size distributions, and so on. In this paper, the main advances in the research of PMOs in recent years are reviewed. The structural characteristics are particularly introduced. Then according to the different organic bridging groups incorporated into the structures, the PMOs are classified into three classes. The synthesis of PMOs with different templates is introduced and the exterior factors which influence the properties are discussed. At last, the difficulties of research on PMOs are mentioned, and the development prospect is looked forward.