Weak Binding of N-Alkylpyridinium Ions to Nonionic Surfactant Micelles as Studied by Capillary Zone Electrophoresis

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  • TAKAYANAGI Toshio
    Department of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University
  • IKUTA Ayumi
    Department of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University
  • MOTOMIZU Shoji
    Department of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University

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The binding equilibrium of N-alkylpyridinium ions to nonionic surfactant micelles was investigated through the changes in the electrophoretic mobility of the alkylpyridinium ions in capillary zone electrophoresis. The binding constants thus determined increased with increasing molecular volume of the alkylpyridinium ions. However, the binding constants are small compared with the ones for the anionic alkylbenzenesulfonate and polynitrophenolate ions at the same molecular volume.

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  • Analytical Sciences

    Analytical Sciences 26 (5), 625-627, 2010

    社団法人 日本分析化学会

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