Synthesis of telechelic vinyl/allyl functional siloxane copolymers with structural controlElectronic supplementary information (ESI) available: Numbered structures for 13C-NMR assignment and 1H-NMR spectrum of 4. See DOI: 10.1039/c4py00919c

Multifunctional siloxane copolymers with terminal vinyl or allyl functional groups are synthesised through the borane-catalysed polycondensation of hydrosilanes and alkoxysilanes. Copolymers of varying molecular weights ( M&cmb.macr; w = 13 200-70 300 g mol −1 ), spatially well-distributed funct...

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Main Authors: Madsen, F. B, Javakhishvili, I, Jensen, R. E, Daugaard, A. E, Hvilsted, S, Skov, A. L
Format: Article
Language:English
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Summary:Multifunctional siloxane copolymers with terminal vinyl or allyl functional groups are synthesised through the borane-catalysed polycondensation of hydrosilanes and alkoxysilanes. Copolymers of varying molecular weights ( M&cmb.macr; w = 13 200-70 300 g mol −1 ), spatially well-distributed functional groups and high end-group fidelity are obtained in a facile and robust synthetic scheme involving polycondensation, end-group transformation and different functionalisation reactions such as Cu( i )-mediated azide-alkyne cycloaddition. Pendant alkyl chloride, alkyl azide, bromoisobutyryl, 4-nitrobenzene and 1-ethyl-imidazolium chloride fragments with programmable spatial distributions are incorporated in the copolymer backbones. NMR and FTIR spectroscopy as well as size exclusion chromatography corroborate the efficacy and versatility of this modular approach. Multifunctional siloxane copolymers with terminal vinyl or allyl functional groups are synthesised through the borane-catalysed polycondensation of hydrosilanes and alkoxysilanes.
ISSN:1759-9954
1759-9962
DOI:10.1039/c4py00919c