Abstract
Molecularly doped silica xerogels are prepared by adding either main-group or transition metal organometallic compounds containing bifunctional ligands to conventional sol-gel formulations. These bifunctional ligands contain distal (alkoxy or hydroxy)silyl groups, so that the dopant molecules become covalently incorporated into the silica xerogel matrix as it is being formed. Subsequent thermal treatment under reducing or oxidizing-then-reducing conditions leads to the decomposition of molecular precursor and to the formation of a nanoparticulate material with precise stoichiometry highly dispersed throughout the xerogel matrix.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 121-130 |
| Number of pages | 10 |
| Journal | Journal of Organometallic Chemistry |
| Volume | 557 |
| Issue number | 1 |
| DOIs | |
| State | Published - Apr 20 1998 |
Funding
This material is based upon work supported by, or in part by, the U.S. Army Research Office under grant number DAAH04-95-1-0146. C.M.L. is grateful for this support. Work performed at ORNL (J.G.Z.) was supported by DOE under Contract DE-AC05-840R21400 with Lockheed Martin Energy Systems, Inc.
Keywords
- Nanocomposites
- Nanoparticles
- Silica xerogels
- Sol-gel chemistry
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry