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

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概要

• 論文の詳細を見る

• Cationic polyfluorinated surfactants (CnF2n+1CONH(CH2)2N+(CH3)2(CH2)15CH3 Br−; CnF (n = 1~3)) formed reversed micelles in organic solvents such as toluene. The reversed micelles 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 nucleus in the terminal trifluoromethyl group of were 750±23, 740±29 and 855±93 ms for C1F, C2F and C3F, respectively.

• 公益社団法人 日本化学会の論文

著者

• Inoue Haruo

  Department Of Applied Chemistry Graduate Course Of Engineering Tokyo Metropolitan University

• Takagi Shinsuke

  Department Of Applied Chemistry Graduate Course Of Urban Environmental Sciences Tokyo Metropolitan U

• Shimada Tetsuya

  Department Of Applied Chemistry Graduate Course Of Urban Environmental Sciences Tokyo Metropolitan U

• TRYK Donald

  Fuel Cell Nanomaterials Center, University of Yamanashi

• TAKAGI SHINSUKE

  Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University

• TSUKAMOTO TAKAMASA

  Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University

• Nagashima Minoru

  Department of Applied Chemistry, Graduate Course of Urban Environmental Sciences, Tokyo Metropolitan University

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