Abstract
Periodic mesoporous oxides are usually synthesized from water/surfactant systems with low surfactant concentrations and 1,3,5-trimethylbenzene (TMB) has been used as a swelling agent to increase the pore size under certain conditions. The use of pre-formed liquid crystal phases as template in multicomponent systems holds promise for even larger pore sizes, large monoliths, and a high level of phase, pore size, and morphology control. Here a generalized method has been employed to prepare liquid crystal phases that subsequently act as template for the formation of periodic mesoporous silica. Once formed, liquid crystal phases persist throughout the inorganic polymerization and gelation processes and directly template the formation of inorganic mesophases. The method is applicable to a diversity of chemical compositions and offers a simultaneous control over the pore size and morphology. Synthetic variables that can be used to tune the pore size include cosurfactant chain length, cosurfactant/surfactant mass ratios, and the amount of oil. The removal of organic components leads to periodic mesoporous silica with excellent thermal and hydrothermal stability.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Society of Photo-Optical Instrumentation Engineers |
| Pages | 164-171 |
| Number of pages | 8 |
| Volume | 3937 |
| State | Published - 2000 |
| Event | Micro- and Nano-Photonic Materials and Devices - San Jose, CA, USA Duration: Jan 27 2000 → Jan 28 2000 |
Other
| Other | Micro- and Nano-Photonic Materials and Devices |
|---|---|
| City | San Jose, CA, USA |
| Period | 1/27/00 → 1/28/00 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics