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Thermal stability of sol–gel derived methacrylate oligosiloxane-based hybrids for LED encapsulants

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Abstract

Methacrylate oligosiloxane-based hybrid materials (methacrylate hybrimers) were fabricated by curing the methacrylate oligosiloxane resins synthesized by sol–gel condensation reaction of 3-(trimethoxysilyl)propyl methacrylate (MPTS) and diphenylsilanediol (DPSD) for the LED encapsulant application. The fabricated hybrimers are optically transparent and have a high refractive index up to 1.565 depending on the precursor composition. The lower DPSD content hybrimer, which is the more polymerized and heated in a vacuum to remove the non-polymerized methacrylate groups, produces higher optical transmittance and thermal stability. This behavior is interpreted by thermal degradation of methacylate groups in the hybrimers.

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Acknowledgment

This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. R11-2007-045-03002-0 and No. R01-2007-000-20815-0).

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Authors and Affiliations

  1. Laboratory of Optical Materials and Coating (LOMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea

    Joon-Soo Kim, SeungCheol Yang & Byeong-Soo Bae

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  1. Joon-Soo Kim
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  2. SeungCheol Yang
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Correspondence to Byeong-Soo Bae.

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Kim, JS., Yang, S. & Bae, BS. Thermal stability of sol–gel derived methacrylate oligosiloxane-based hybrids for LED encapsulants. J Sol-Gel Sci Technol 53, 434–440 (2010). https://doi.org/10.1007/s10971-009-2117-9

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  • DOI: https://doi.org/10.1007/s10971-009-2117-9

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