The Dependence of the Polarity of Solvents on 1,3 : 2,4-Di-O-benzylidene-D-sorbitol Gel

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1,3 : 2,4-Di-<i>O</i>-benzylidene-<FONT SIZE="-2">D</FONT>-sorbitol (<FONT SIZE="-2">D</FONT>-DBS) is known as a chiral oil gelator for a wide variety of organic solvents. The relationship between texture, structure of the gel, and the aggregated structure formed by <FONT SIZE="-2">D</FONT>-DBS was investigated in various solvents. In the low polar solvents, the gel held a mesh type network structure in which the fiber appeared to be a rope-like helical structure. In the moderately polar solvents, the gel held an isotropic mesophase, but in the polar solvents, a spherulite texture was observed. From the experiments for the critical gel concentration of <FONT SIZE="-2">D</FONT>-DBS in various solvents, it is assumed that there are three regions that differ in the form of hydrogen bonding, depending upon the polarity of solvents. By IR spectroscopic measurements, we found that, with the increase of solvent polarity, the hydrogen bonding between <FONT SIZE="-2">D</FONT>-DBS and the solvent became more predominant than the intramolecular hydrogen bonding, and the hydrogen bonding between <FONT SIZE="-2">D</FONT>-DBS became weaker at the same time. In addition, the intensities of CD spectra in the <FONT SIZE="-2">D</FONT>-DBS gel decreased according to the increase of the solvent polarity. Here it is considered that textures and structurs observed in the gel are related to the aggregated structure that is mainly formed through hydrogen bonding among <FONT SIZE="-2">D</FONT>-DBS.

収録刊行物

  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 68(1), 123-127, 1995-01-15

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10008884473
  • NII書誌ID(NCID)
    AA00580132
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00092673
  • データ提供元
    CJP書誌  J-STAGE 
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