Thermally induced hydrosilylation at deuterium-terminated silicon nanoparticles: an investigation of the radical chain propagation mechanism.
Isotopic labeling techniques were employed to study alkene addition to hydrogen- and deuterium-terminated silicon nanoparticles. Deuterium-terminated silicon nanoparticle synthesis is described, as is the characterization of fresh deuterium-terminated particles by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and in situ Fourier transform infrared spectroscopy (FTIR). Particles were refluxed in pure 1-dodecene and subsequently characterized by FTIR and nuclear magnetic resonance (NMR) spectroscopy. (1)H NMR results showed features consistent with dodecyl-terminated nanoparticles. Infrared absorption spectra of refluxed particles showed strong evidence of new C-D bond formation, which is consistent with a radical chain mechanism for alkene addition by hydrosilylation.
Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Jason
J
Holm
Jeffrey T
JT
Roberts
D003903:Deuterium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D046529:Microscopy, Electron, Transmission; D019158:N-Acetylneuraminic Acid / Q000737:chemistry*; D053758:Nanoparticles; D012825:Silicon / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
D003903:Deuterium; D019158:N-Acetylneuraminic Acid; D012825:Silicon