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Titel: Aryl‐group substituted polysiloxanes with high‐optical transmission, thermal stability, and refractive index
VerfasserIn: Meier, Dennis
Huch, Volker
Kickelbick, Guido
Sprache: Englisch
Titel: Journal of Polymer Science
Bandnummer: 59
Heft: 20
Seiten: 2265-2283
Verlag/Plattform: Wiley
Erscheinungsjahr: 2021
Freie Schlagwörter: alkoxysilanes
high-refractive index
optical polymers
polycondensation
polysiloxanes
thermal stability
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Polysiloxanes are an important class of polymers for optoelectronic applications. Novel polysiloxanes with high-refractive index (RI) based on phenanthrenylsubstituted monomers are prepared by a polycondensation reaction starting from various substituted dialkoxysilanes as monomers. The substitution patterns on the Si atom are systematically changed to vary the properties of the linear polymers as well as the final cured material. The two monomers with polycyclic aromatic side groups 9-phenanthrenylmethyldimethoxysilane and 9-phenanthrenylphenyldimethoxysilane are synthesized and fully characterized, including their single crystal X-ray structures. Linear polysiloxanes with variations in hydride, methyl, vinyl, phenyl, and phenanthrenyl side group content are prepared by acid- and base-catalyzed polycondensation reactions. Both Si H and Si vinyl substituted polymers with molecular weights up to 30 kDa and adjustable RI's from 1.52 to 1.63 are obtained and the thermally cured by Pt-catalyzed hydrosilylation reactions. Polysiloxane resins are obtained with high-RI's, optical transmittance above 95% and thermal stabilities up to 420C. Long-term thermal stability tests show transmittance values above 85% even after 60 days of thermal treatment at 180C.
DOI der Erstveröffentlichung: 10.1002/pol.20210316
URL der Erstveröffentlichung: https://doi.org/10.1002/pol.20210316
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-411535
hdl:20.500.11880/36930
http://dx.doi.org/10.22028/D291-41153
ISSN: 2642-4169
2642-4150
Datum des Eintrags: 23-Nov-2023
Bezeichnung des in Beziehung stehenden Objekts: Supporting Information
In Beziehung stehendes Objekt: https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fpol.20210316&file=pol20210316-sup-0001-Supinfo.pdf
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Professur: NT - Prof. Dr. Guido Kickelbick
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes



Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons Creative Commons