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Size-dependent Reactivity in the Functionalization of Nanostructured Silicon Surfaces

Published online by Cambridge University Press:  23 May 2011

Joel A. Kelly ,
Amber M. Shukaliak ,
Michael D. Fleischauer  and
Jonathan G.C. Veinot
Joel A. Kelly
Affiliation:
Department of Chemistry, University of Alberta Edmonton Alberta T6G 2G2, Canada
Amber M. Shukaliak
Affiliation:
Department of Chemistry, University of Alberta Edmonton Alberta T6G 2G2, Canada
Michael D. Fleischauer
Affiliation:
NRC- National Institute for Nanotechnology Edmonton Alberta T6G 2M9, Canada
Jonathan G.C. Veinot
Affiliation:
Department of Chemistry, University of Alberta Edmonton Alberta T6G 2G2, Canada
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Abstract

The reactivity of silicon nanocrystals (Si-NCs) in near-UV photochemical hydrosilylation was evaluated as a function of size. Results show that Si-NCs with photoluminescence (PL) in the visible spectral region react faster than Si-NCs with near-IR PL. Fourier-transform infrared (FTIR) spectroscopy suggests this difference in reactivity is due to quantum size effects in the exciton-mediated mechanism proposed for this reaction. We have carried out a detailed comparison of Si-NC reactivity in photochemical and thermal hydrosilylation and determined the conditions under which Si-NCs may be size-selected based on their reactivity.

Keywords

nanostructureSisurface reaction
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1359: Symposium NN – Electronic Organic and Inorganic Hybrid Nanomaterials—Synthesis, Device Physics and Their Applications , 2011 , mrss11-1359-nn04-03
Copyright
Copyright © Materials Research Society 2011

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References

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