Solubilization of calixarenes in an aliphatic organic solvent by reverse micelles

Masahiro Goto, Kenji Shinohara, Kojiro Shimojo, Tatsuya Oshima, Fukiko Kubota

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)


    Solubilization of a calix[4]arene carboxylic acid derivative in an aliphatic organic solvent was accomplished by utilizing a reverse micellar solution. The reverse micellar solution was prepared by cationic cetyltrimethyl ammonium bromide (CTAB) or anionic bis-2-ethylhexyl sulfosuccinate (AOT). Both reverse micellar solutions facilitate the solubilization of the calix[4]arene carboxylic acid derivative in isooctane. The concentration of calix[4]arene solubilized in the reverse micelles increases with an increase of surfactant concentration. The water content in the reverse micelles (W0 = [H2O]/[surfactant]) also affects the solubilization behavior of calix[4]arene. The optimum water content existed for the formation of the reverse micelles and the value was around 20. The extraction performance of calix[4]arene solubilized was investigated for yttrium (III) in isooctane. The extraction ability of calix[4]arene was enhanced by solubilizing in the anionic reverse micellar solution.

    Original languageEnglish
    Pages (from-to)1012-1016
    Number of pages5
    Issue number10
    Publication statusPublished - Oct 2002

    All Science Journal Classification (ASJC) codes

    • General Chemistry
    • General Chemical Engineering


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