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doi:10.22028/D291-34712
Titel: | Platinum free thermally curable siloxanes for optoelectronic application – synthesis and properties |
VerfasserIn: | Steinbrück, Nils Pohl, Svenja Kickelbick, Guido |
Sprache: | Englisch |
Titel: | RSC Advances |
Bandnummer: | 9 |
Heft: | 4 |
Seiten: | 2205–2216 |
Verlag/Plattform: | The Royal Society of Chemistry |
Erscheinungsjahr: | 2019 |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Polysiloxanes for applications in the area of optical devices are usually based on two-component platinum catalysed cross-linked materials. Here we report the synthesis and properties of a novel one-component siloxane that can be thermally cured showing similar tailorable properties like commercially available encapsulation systems without using a noble metal catalyst. The pre-curing material is formed by an acid catalysed condensation reaction of trialkoxysilanes (TAS), dialkoxysilanes (DAS) and alkoxy-terminated polysiloxanes. NMR analysis of the formed polymeric compounds reveal that the materials are partially cross-linked gels. The obtained compounds can be thermally cured and consolidated at temperatures between 160 and 200 °C. Depending on the composition a tuneable hardness in between 50–90 Shore A, refractive indices of 1.494–1.505, as well as high temperature stabilities up to 443 °C were obtained. The high thermal- and photostability, the high transparency, as well as the tailorable refractive index makes these materials to ideal systems for optoelectronic applications. Investigations under increased temperatures and high-density illumination reveal that the material can withstand conditions, which are typical for high-performance light emitting diodes (LED). |
DOI der Erstveröffentlichung: | 10.1039/c8ra09801h |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-347128 hdl:20.500.11880/31773 http://dx.doi.org/10.22028/D291-34712 |
ISSN: | 2046-2069 |
Datum des Eintrags: | 21-Sep-2021 |
Bezeichnung des in Beziehung stehenden Objekts: | Supplementary files |
In Beziehung stehendes Objekt: | https://www.rsc.org/suppdata/c8/ra/c8ra09801h/c8ra09801h1.pdf?_ga=2.173993379.1628629391.1632119547-124457788.1618394345 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie |
Professur: | NT - Prof. Dr. Guido Kickelbick |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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c8ra09801h.pdf | 1,23 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons