초록 |
Periodic mesoporous organosilicas (PMO) with a diversity of morphologies on the basis of rope and gyroid with hexagonal symmetry were synthesized using BTME as silica source and ODTMABr as template. The generation of various morphologies could be interpreted partly in terms of the degree of curvature and the accretion type induced by various topological defects. The formation mechanism of PMO via the side-to-side close packing of platelet-, stick-, pin-, syringe-, and bullet-like particles as a secondary building unit was suggested. Periodic mesoporous organosilicas (PMO) with morphologies such as sphere, gyroid, and multipod were synthesized using BTSE as silica source and CTMABr as template. The change of shape and channel structure with reaction time may be attributed to the metamorphic reconstruction. In a same reaction batch, the oriented film-shaped PMO on the air-water interface was synthesized. |