<div class="csl-bib-body">
<div class="csl-entry">Mitterbauer, M. (2016). <i>Synthesis of novel Si-based long wavelength photoinitiators for dental applications</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2016.35284</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2016.35284
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/3585
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dc.description
Zusammenfassung in deutscher Sprache
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dc.description.abstract
Visible light photopolymerization is widely used for modern applications, such as curing of dental filling materials. The currently used bimolecular photoinitiating system based on camphorquinone / dimethylamino benzoic acid ethyl ester (CQ/DMAB) shows quite limited reactivity. Other more efficient cleavable photoinitiators like bisacylphosphine oxides (BAPO) show an absorption band which does not overlap very well with the emission band of the applied dental LEDs. Also diacylgermane-based structures like Ivocerin with an absorption shifted to longer wavelengths revealed drawbacks relating to its high production costs. Since Si-based photoinitators might have similar absorption properties as the Ge-based compounds, the synthesis and photochemical characterization of such a compound should be the target of this work. Due to the low stability of the existing acylsilane-based type I initiators novel concepts should show be explored. Furthermore, improved reactivity is desired, which should be achieved by repressing the photoinduced formation of a siloxycarbene, also known as Brook-rearrangement. Therefore the synthesis of oxygen substituted acyl silanes was envisaged. Furthermore the strategy of multiple substitution at the silicon atom with aromatic acyl groups resulted in a successful synthesis of a tetraacylsilane, which showed good reactivity in photopolymerization of acrylates. Furthermore the absorption band overlaps very well with the emission band of dental LEDs. However its stability in aqueous media still leaves room for improvement.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
Photopolymere
en
dc.title
Synthesis of novel Si-based long wavelength photoinitiators for dental applications
en
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2016.35284
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Moritz Mitterbauer
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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tuw.publication.orgunit
E163 - Institut für Angewandte Synthesechemie
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dc.type.qualificationlevel
Diploma
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dc.identifier.libraryid
AC13005226
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dc.description.numberOfPages
90
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dc.identifier.urn
urn:nbn:at:at-ubtuw:1-78849
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dc.thesistype
Diplomarbeit
de
dc.thesistype
Diploma Thesis
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
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tuw.advisor.orcid
0000-0001-7865-1936
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item.fulltext
with Fulltext
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item.cerifentitytype
Publications
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item.mimetype
application/pdf
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item.openairecristype
http://purl.org/coar/resource_type/c_bdcc
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item.languageiso639-1
en
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item.openaccessfulltext
Open Access
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item.openairetype
master thesis
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item.grantfulltext
open
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crisitem.author.dept
E163-02-1 - Forschungsgruppe Polymerchemie und Technologie