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Surface-Initiated Group-Transfer Polymerization – A Catalytic Approach to Stimuli-Responsive Silicon Nanocrystal Hybrid Materials

Published online by Cambridge University Press:  01 June 2015

Julian Kehrle ,
Tobias Helbich ,
Muhammad Iqbal ,
Lida Hadidi ,
Jonathan G.C. Veinot  and
Bernhard Rieger
Julian Kehrle
Affiliation:
WACKER-Chair of Macromolecular Chemistry, Technical University Munich, Lichtenbergstraße 4, 85757 Garching, Germany
Tobias Helbich
Affiliation:
WACKER-Chair of Macromolecular Chemistry, Technical University Munich, Lichtenbergstraße 4, 85757 Garching, Germany
Muhammad Iqbal
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
Lida Hadidi
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
Jonathan G.C. Veinot
Affiliation:
Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada
Bernhard Rieger
Affiliation:
WACKER-Chair of Macromolecular Chemistry, Technical University Munich, Lichtenbergstraße 4, 85757 Garching, Germany
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Abstract

Silicon nanocrystals are photoluminescent materials with a tremendous scope in various niche applications especially the generation of hybrid materials. Our approach for the preparation of stimuli responsive SiNC hybrid materials is based on the application of surface-initiated group-transfer polymerization. As a first step we used photografting of ethyleneglycol di(methacrylate). Then we impregnated remaining methyl acrylic surface groups with the catalyst Cp2YCH2TMS(thf). We performed polymerization studies regarding catalyst and diethyl vinylphosphonate (DEVP) concentrations, highlighting that surface grafting is dependent upon catalyst concentration and independent from added monomer amount. Furthermore, we successfully polymerized methyl methacrylate, dimethyl vinylphosphonate and diisopropyl vinylphosphonate from the SiNC surface.

Keywords

nanoscaleSipolymerization
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1770: Symposium A – Emerging Silicon Science and Technology , 2015 , pp. 13 - 18
Copyright
Copyright © Materials Research Society 2015 

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References

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