Design of Novel Composite Materials by Functional Low Molecular-Weight Organogels

  • Sugiyasu Kazunori
    MIT化学科・T.M.Swager研究室
  • Fujita Norifumi
    Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University
  • Shinkai Seiji
    Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University

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  • 低分子ゲル化剤による機能設計とその複合材料の創製
  • テイブンシ ゲルカザイ ニ ヨル キノウ セッケイ ト ソノ フクゴウ ザイリョウ ノ ソウセイ

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Abstract

Recently, low molecular-weight organogel (LMOG) systems have drawn much attention not only as new functional soft-materials but also as well-defined nano-structured assemblies. In this review, molecular design and application of the second generation of LMOG are described. Firstly, stimuli-responsive organogel systems are developed. They change their molecular structure by photo- and redox-stimuli, and subsequently, their aggregation modes are controlled (sol-gel phase transition). Secondly, fluorescent organogel systems are introduced. In the organogel systems where functional dye molecules stack precisely, an unusual electron overlapping mode and an efficient energy transfer system are constructed. Thirdly, well-defined nano-structured assemblies thus designed are applied to composite materials with functional molecules, inorganic substances, and conductive polymers. By the combination of their advantages, new functional composite materials are obtained. These new findings and approaches have led us to new fields of materials chemistry and nano-chemistry.

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