Organometallic compounds as single-source precursors to nanocomposite materials
- Vanderbilt Univ., Nashville, TN (United States); and others
Molecularly doped silica xerogels are prepared via sol-gel procedures by the addition of either main-group or transition metal organometallic compounds containing bifunctional ligands to conventional sol-gel recipes. These bifunctional ligands contain distal alkoxysilyl 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 formation of a nanoparticulate material highly dispersed throughout the xerogel matrix. The formation of nanocomposites containing nanoclusters of metals, semiconductors, or binary alloys will be presented along with characterization data. Factors permitting the formation of nanoparticulates with stoichiometric precision will be discussed within this {open_quotes}molecules to nanocomposite{close_quotes} synthetic strategy.
- OSTI ID:
- 560158
- Report Number(s):
- CONF-970443-; TRN: 97:005895-0171
- Resource Relation:
- Conference: 213. national meeting of the American Chemical Society, San Francisco, CA (United States), 13-17 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of 213th ACS national meeting; PB: 2904 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preparation of nanocomposites containing nanoclusters of transition metals
Formation of crystalline germanium nanoclusters in a silica xerogel matrix from an organogermanium precursor