Excellent gelators for organic fluids: Simple bolaform amides derived from amino acids

Authors

  • Prof. Kenji Hanabusa,

    Corresponding author
    1. Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
    • Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
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  • Reo Tanaka,

    1. Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
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  • Dr. Masahiro Suzuki,

    1. Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
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  • Dr. Mutsumi Kimura,

    1. Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
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  • Prof. Hirofusa Shirai

    1. Department of Functional Polymer Science Faculty of Textile Science and Technology Shinshu University Ueda, Nagano 386 (Japan)
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  • This work was supported by Grant-in-Aid for Scientific Research on Priority Areas, “New Polymers and Their Nano-Organized Systems” (No. 277/08246101) and a grant (No. 09450347) from the Ministry of Education, Science, Sports and Culture.

Abstract

The gelation of organic solvents by low molecular weight gelators is an area of study still in its infancy. Difficulties in the design of universal gelators suitable for a wise variety of liquids arise because the self-aggregation of teh molecules strongly depends on the polarity of the solvent. The bolaform amides presented, derived from N-protected amino acids, are demonstrated to have gel-forming abilities for a range of organic solvents. The driving force responsible for gelation in this case is suggested and it is proposed that the amides form an extended molecular sheet in the liquids.

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