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Sol–gel derived dye-bridged hybrid materials for white luminescence

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Abstract

Novel yellow and blue emissive dyes have been synthesized using 2,5-diamino-3,6-dicyanopyrazine and various alkoxysilanes and they are covalently bridged to cycloaliphatic epoxy functional oligosiloxane via non-hydrolytic sol–gel reaction. Dye-bridged hybrid materials (DBH) are fabricated by thermal curing the dye-bridged oligosiloxane. Structure and formation of dyes and siloxane network is studied using analysis method. Four components of red, yellow, green and blue emitting DBH cover entire visible range and white luminescence with high color rendering index is realized by controlling their combinations. We have ensured superior thermal stability DBH at 120 °C for 200 h caused by covalently bridged structure and robust siloxane matrix.

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Acknowledgments

This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MEST) (No. 2011-0017971), and by grant No.EEWS-2010-N01100426 from EEWS Research Project of the office of KAIST EEWS Initiative.

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Authors and Affiliations

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

    Seung-Yeon Kwak, SeungCheol Yang, Na Ree Kim & Byeong-Soo Bae

  2. Department of Display and Chemical Engineering, Yeungnam University, Gyeongsan, 712-749, Korea

    Jae Hong Kim

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  1. Seung-Yeon Kwak
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  2. SeungCheol Yang
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  3. Na Ree Kim
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  4. Jae Hong Kim
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  5. Byeong-Soo Bae
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Correspondence to Byeong-Soo Bae.

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Kwak, SY., Yang, S., Kim, N.R. et al. Sol–gel derived dye-bridged hybrid materials for white luminescence. J Sol-Gel Sci Technol 65, 46–51 (2013). https://doi.org/10.1007/s10971-012-2676-z

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  • DOI: https://doi.org/10.1007/s10971-012-2676-z

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