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Encapsulation of Luminescent Silicon Nanocrystals within Mesoporous Silica Nanospheres: Synthesis and Effect on Photoluminescence

Published online by Cambridge University Press:  23 May 2011

Sarah Regli ,
Joel A. Kelly  and
Jonathan G.C. Veinot
Sarah Regli
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G G22, Canada
Joel A. Kelly
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G G22, Canada
Jonathan G.C. Veinot
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G G22, Canada
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Abstract

Silicon nanocrystals (Si-NCs) are of significant research interest owing to their quantum confined photoluminescent (PL) properties and biological inertness. A promising application of these NCs is as the luminescent component in multifunctional biomedical technologies. In this report, we demonstrate the encapsulation of alkyl terminated Si-NCs within a mesoporous silica shell as a multifunctional imaging and drug delivery architecture. The Si-NC concentration was found to critically impact the nanoshell morphology. The impact of the encapsulation process on the Si-NC PL was studied, showing a blue-shift and decrease in intensity attributed to the oxidation of Si-NCs under basic conditions.

Keywords

nanostructureSisol-gel
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-nn04-08
Copyright
Copyright © Materials Research Society 2011

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