Microstructure and the Mobility of Fluorinated Carbon Chain of Reversed Micelles Formed by Cationic Polyfluorinated Surfactant

• Minoru Nagashima

• Takamasa Tsukamoto

• Tetsuya Shimada

抄録

Cationic polyfluorinated surfactants (CnF2n+1CONH(CH2)2N+(CH3)2(CH2)15CH3Br−; CnF (n = 1–3)) form reversed micelles in organic solvents such as toluene. The reversed micelle formation and their properties were studied by 1H NMR and 19F NMR measurements. The cmc (critical reversed micelle concentration) and the aggregation numbers of reversed micelles formed by fluorinated surfactants were determined. The aggregation numbers of reversed micelles formed by fluorinated surfactant were calculated to be 9–12 in toluene. According to the analysis of NMR longitudinal relaxation time T1, the polyfluorinated reversed micelles were shown to have a very unique microstructure, in which the perfluoroalkyl chains orientate at the interface between organic and water phase, and the mobility of perfluoroalkyl chains in reversed micelles was relatively larger than that of micelles and vesicles. The 19F-T1 values of fluorine nuclei in the terminal trifluoromethyl group of were 750 ± 23, 740 ± 29, and 855 ± 93 ms for C1F, C2F and C3F, respectively.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 87 (11), 1273-1277, 2014-11

  Tokyo : Chemical Society of Japan

キーワード

• General Chemistry

詳細情報

• CRID: 1523106604617427072
• NII論文ID: 130004677566
• NII書誌ID: AA00580132
• ISSN: 00092673
• ISSN: 13480634
• DOI: 10.1246/bcsj.20140227
• NDL書誌ID: 025906909
• Web Site: http://id.ndl.go.jp/bib/025906909
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025906909
• Web Site: https://academic.oup.com/bcsj/article-pdf/87/11/1273/56277367/bcsj.20140227.pdf
• 本文言語コード: en
• NDL 雑誌分類:
  • ZP1(科学技術--化学・化学工業)
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