Size-dependent reactivity in the functionalization of nanostructured silicon surfaces

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DOIResolve DOI: http://doi.org/10.1557/opl.2011.783
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TypeArticle
Proceedings title2011 MRS Spring Meeting - Symposium NN – Electronic Organic and Inorganic Hybrid Nanomaterials—Synthesis, Device Physics and Their Applications
Series titleMaterials Research Society Symposia Proceedings; Volume 1359
Conference2011 MRS Spring Meeting, April 25-29, 2011, San Francisco, CA, USA
ISSN0272-9172
ISBN9781605113364
Pages135140; # of pages: 6
SubjectFTIR; Functionalizations; Nanostructured silicon; Near-IR; Photochemical hydrosilylation; Quantum size effects; Silicon nanocrystals; Size-dependent reactivity; Visible spectral regions; Hydrosilylation; Synthesis (chemical); Silicon
AbstractThe 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.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology
Peer reviewedYes
NPARC number21272030
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Record identifierb4e76bf9-fb42-400b-9a3f-c3849dba7744
Record created2014-05-22
Record modified2017-04-20
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