Oligosilane-siloxane nanocomposites
- Stanford Univ., CA (United States)
- Sandia National Laboratories, Albuquerque, NM (United States)
Zirconocene-catalyzed a-bond metathesis of phenylsilane is a mild and convenient way to generate synthetically versatile oligophenylsilane [Si(H)(Ph)]{sub n} (n {approx} 33). Free radical-initiated hydrosilation of alkoxysilanes RSiMe{sub x}(OEt){sub y} (R = allyl; x = 0, y = 3; x = 1, y = 2; x = 2, y = 1) at the oligophenylsilane Si-H bonds, followed by sol-gel hydrolysis-polycondensation, yields novel siloxanes containing the intact oligosilane chromophore. The sol-gel precursors and resulting siloxane materials have been characterized by solution and solid state multinuclear NMR, UV-VIS and IR spectroscopies and elemental analysis, and their bulk properties assessed by scanning electron microscopy, thermal and nitrogen sorption surface area analyses. The new materials` molecular and bulk properties, and the significance of processing and siloxane content on these properties, will be discussed.
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 370634
- Report Number(s):
- CONF-960376--
- Country of Publication:
- United States
- Language:
- English
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