One-pot synthesis and characterization of poly(alkoxysilane)s promoted by silver colloidal nanoparticles |
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Authors: | Kim Myoung-Hee Lee Jun Mo Soo-Yong Woo Hee-Gweon Yang Kap-Seung Kim Bo-Hye Cho Myong-Shik Jun Jin Ko Young Chun Roh Sung-Hee Sohn Honglae |
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Affiliation: | Department of Chemistry, Alan G. MacDiarmid Energy Research Institute (AMERI) and Nanotechnology Research Center (NTRC), and Chonnam National University, Gwangju 500-757, Korea. |
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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. |
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