Organometallic compounds as single-source precursors to nanocomposite materials
Conference
·
OSTI ID:560158
- 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--
- Country of Publication:
- United States
- Language:
- English
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