Molecular Association of Water-Soluble Calixarenes with Several Stilbene Dyes and Its Application to the Facile Determination of Cationic Surfactant Concentrations.

• Nishida Masashi

  Department of Industrial Chemistry, Kumamoto Institute of Technology

• Ishii Daido

  Department of Industrial Chemistry, Kumamoto Institute of Technology

• Yoshida Isao

  Department of Industrial Chemistry, Kumamoto Institute of Technology

• Shinkai Seiji

  Department of Chemical Science & Technology, Faculty of Engineering, Kyushu University

書誌事項

タイトル別名

• Molecular Association of Water-Soluble

抄録

The molecular association of water-soluble p-sulfonatocalix[n]arenes (1_n; n = 4, 6, and 8) with several stilbene dyes (D) has been studied by spectrophotometric and ¹H NMR methods. It was found that 1_n reacts in 1 : 1 stoichiometry with, D such as 4-[(4-dimethylamino)styryl]-1-methylpyridinium (St–4Me), 2-[(4-dimethylamino)styryl]-1-methylpyridinium (St–2Me) and 2-[(4-dimethylamino)styryl]-1-ethylpyridinium (St–2Et) iodides to form their complexes (1_nD). The apparent association constants for 1₈-complexes are larger by about ten times than those of 1₄- and 1₆-complexes. Examinations of the CPK molecular models and the spectrophotometric studies suggested that 1₄ complexes D mainly with its 1-methyl- or 1-ethylpyridinium group, whereas 1₆ complexes D either with its pyridinium ring or with its protonated dimethylamino group in a similar probability, and in 1₈-complexes the molecule is wholly incorporated into the cavity of 1₈. The absorbance of D, which was decreased by association with 1_n, was regenerated by the addition of other colorless cationic surfactants (A) such as cetylethyldimethylammonium ion. Studies on the substitution reaction of 1_nD with A indicated that a 1 : 1 complex (1_nA) is formed by releasing a free dye molecule (D). This was applied to a convenient determination of the cationic surfactant concentration in water.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 70 (9), 2131-2140, 1997

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390282679097801472
• NII論文ID: 130004149885
• NII論文ID: 10008922813
• NII書誌ID: AA00580132
• DOI: 10.1246/bcsj.70.2131
• ISSN: 13480634
• ISSN: 00092673
• NDL書誌ID: 4307572
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4307572
• Web Site: https://academic.oup.com/bcsj/article-pdf/70/9/2131/56196666/bcsj.70.2131.pdf
• 本文言語コード: en
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