Precise Syntheses of Luminescent Polystyrene Microparticles with Encapsulated Organic Dyes for Novel Colloidal Photonic Crystals

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  • TSUCHIYA Saori
    Department of Chemistry, Graduate School of Science, Tokyo University of Science
  • FURUMI Seiichi
    Department of Chemistry, Graduate School of Science, Tokyo University of Science

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  • 発光性有機色素を含有したポリスチレン微粒子の精密合成とフォトニック結晶への応用
  • ハッコウセイ ユウキ シキソ オ ガンユウ シタ ポリスチレン ビリュウシ ノ セイミツ ゴウセイ ト フォトニック ケッショウ エ ノ オウヨウ

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Abstract

Colloidal crystals (CCs) have received tremendous interest because the highly ordered self-assembly of microparticles leads to the facile fabrication of 3D-photonic crystals. So far, there have been many reports on CC films fabricated with non-luminescent microparticles such as polystyrene (PS) or silica. This situation motivated us to synthesize luminescent PS microparticles by encapsulating organic dyes for the application to novel optoelectronic devices. In this communication, we report the successful preparation of luminescent PS microparticles encapsulating two kinds of organic dyes through emulsion polymerization in the presence of sodium dodecyl sulfate. When the luminescent PS microparticles were synthesized at an appropriate molar concentration of the organic dyes, the uniform CC films exhibited unique optical properties of not only Bragg reflection, but also with efficient white-light emission under illumination with UV light. As an extension of our findings, we could observe clear white-light emission from a flexible CC film of the luminescent PS particles self-assembled on a PET sheet.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 75 (6), 619-624, 2018-11-25

    The Society of Polymer Science, Japan

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