Entropy-Dominating Strong Binding of Carboxylate Anions to Protonated Aminocyclodextrin

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  • Koji Kano
    Department of Molecular Science and Technology, Faculty of Engineering, Doshisha UniversityKyotanabe, Kyoto
  • Takashi Kitae
    Department of Molecular Science and Technology, Faculty of Engineering, Doshisha UniversityKyotanabe, Kyoto
  • Hiroshi Takashima
    Department of Molecular Science and Technology, Faculty of Engineering, Doshisha UniversityKyotanabe, Kyoto
  • Yoshiaki Shimofuri
    Department of Molecular Science and Technology, Faculty of Engineering, Doshisha UniversityKyotanabe, Kyoto

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Abstract

<jats:title>Abstract</jats:title> <jats:p>Protonated heptakis(6-amino-6-deoxy)-β-cyclodextrin complexes with p-methylbenzoate and N-acetyltryptophan anions more strongly than a monoamino-β-cyclodextrin cation. Such a strong association is dominated by large and positive entropy changes for complexation which might be due to extensive dehydration from both host and guest upon complexation.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 26 (9), 899-900, 1997-09-01

    Oxford University Press (OUP)

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