Inclusion Reaction of Some Fluorophores with β-Cyclodextrin and Its Effect on Their Reversed-Phase HPLC Retention

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The thermodynamics of the inclusion reaction of flavonol, 7-methoxyflavonol and 4-phenyl-7-hydroxycoumarin (L) with β-cyclodextrin (CD) has been studied fluorometrically with special reference to the effect of organic solvents (S). The equilibrium constants for this reaction were determined in aqueous methanol, ethanol, acetonitrile, acetone, dimethyl sulfoxide, and N,N-dimethylformamide. The dependence of the constants on the content of the respective S was attributable to the substitution of S included in CD with L as CD·nS+L⇔CD·L+nS. Also, the inclusion constants of S with CD, βn=[CD·nS][CD]-1[S]-n, were found to be linearly correlated with the solubility parameter of S for both n=1 and 2. When aqueous methanol was employed as a mobile phase, the retention behavior of coumarins on a reversed-phase HPLC column was studied in the presence of β-CD as a mobile-phase component. The change in the capacity factors could be reasonably explained by the same inclusion scheme as that mentioned above.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry  

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 14(5), 897-901, 1998-10-10 

    社団法人 日本分析化学会

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各種コード

  • NII論文ID(NAID)
    10002417150
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    4576984
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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