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Published on: February 11, 2016
One-pot synthesis and characterization of poly(alkoxysilane)s promoted by silver colloidal nanoparticles
Myoung-Hee Kim1, Jun Lee, Soo-Yong Mo
1Department of Chemistry, Alan G. MacDiarmid Energy Research Institute (AMERI) and Nanotechnology Research Center (NTRC), and Chonnam National University, Gwangju 500-757, Korea.
Abstract:
Si-Si/Si-O dehydrocoupling of hydrosilanes with alcohols (1:1.5 mole ratio), catalyzed by AgNO3 which converted to Ag(0) colloidal nanoparticles, gave poly(alkoxysilane)s in one-pot in moderate to high yield. The hydrosilanes include p-X-C6H4SiH3 (X = H, CH3, OCH3, F), PhCH2SiH3, and (PhSiH2)2. The alcohols include MeOH, EtOH, (i)PrOH, PhOH, and CF3(CF2)2CH2OH. The weight average molecular weight and polydispersity of the poly(alkoxysilane)s were in the range of 1,600 approximately 8,000 Dalton and 1.4 approximately 3.5. The dehydrocoupling reactions of phenylsilane with ethanol (1:3 mole ratio) in the presence of the silver nanocolloid catalyst produced only triethoxyphenylsilane as product.
