Synthesis and thermal stability of cross-linked carbazole-substituted Poly(dimethylsiloxane) for LED encapsulation

• Main Authors: Nordin, Norhuda Hidayah, Othman, Nadras, Ahmad, Zulkifli
• Format: Article
• Language: English; English
• Published: Trans Tech Publications Ltd 2013
• Subjects: TA174 Engineering design; TA401 Materials of engineering and construction
• Online Access: http://irep.iium.edu.my/81154/7/81154_Synthesis%20and%20thermal%20stability%20of%20cross-linked.pdf; http://irep.iium.edu.my/81154/13/81154_Synthesis%20and%20thermal%20stability_SCOPUS.pdf; http://irep.iium.edu.my/81154/; https://doi.org/10.4028/www.scientific.net/AMR.747.733

A series of carbazole substituted poly(dimethylsiloxane) (PDMS) was synthesized by hydrosilylation reaction of 9-vinyl carbazole into PDMS structure. It was then cross-linked with vinyl trimethoxysilane by condensation reaction. The fabricated product display increasing in refractive index with increasing carbazole content. The higher carbazole content also produce high thermal stability which is suitable for electronic device encapsulation applications. The modification also increase Tg of the polymers displayed by differential scanning calorimetry analysis. This behavior owe much to the carbazole moeity when it was successfully incorporated into PDMS chain.