Development of Cyclo(dipeptide)-Based Organogelators Containing Poly(dimethylsiloxane)

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  • HOSHIZAWA Hiroko
    Interdisciplinary Graduate School of Science and Technology, Shinshu University
  • SUZUKI Masahiro
    Interdisciplinary Graduate School of Science and Technology, Shinshu University
  • HANABUSA Kenji
    Interdisciplinary Graduate School of Science and Technology, Shinshu University

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Other Title
  • ポリジメチルシロキサンを導入した環状ジペプチド誘導体を基盤とするオルガノゲル化剤の開発
  • ポリジメチルシロキサン オ ドウニュウ シタ カンジョウ ジペプチド ユウドウタイ オ キバン ト スル オルガノゲルカザイ ノ カイハツ

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Abstract

Cyclo(dipeptide)-based organogelators were synthesized from cyclo(L-aspartyl-L-phenylalanyl) and poly(dimethysiloxane). The prepared gelators showed gelation ability towards to a variety of solvents including hydrocarbon solvents, edible oils, and silicone oils. Temperature-dependence FT-IR spectra were measured to study driving forces. The peak at 1671 cm−1 is assigned to the carbonyl stretching vibration for hydrogen bonding, decreased with increasing temperature. FT-IR spectra indicated the formation of hydrogen-bonding as a driving force. Electron microscopic images of xerogel showed wide three-dimensional fiber networks having 200-500 nm width. Sample prepared from gelator showed not only a thermal phase transition but also an isothermal sol-gel phase transition; this combination is called thixotropic behavior.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 68 (11), 749-758, 2011

    The Society of Polymer Science, Japan

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