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Novel properties of molecular assemblies of isoprenoid surfactants

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Abstract

Unlike micelles of straight hydrocarbon chain-surfactants, isoprenoid surfactants, CH3 [CH(CH3)CH2CH2CH2]3 CH(CH3)CH2−R (R=CH2N+ (CH3)3 Br−, CH2OPO3H− Na+, CH2OSO −3 Na+, CO −2 Na+), gave large globular and cellular assemblies in water which could be observed directly by transmission electron microscopy; critical micelle concentration of 0.3∼1.4×10−3 M at 20°C, aggregation number of 2∼15×104, and diameter of 200–2000 Å. A basic structure of the assemblies was a thin layer with a thickness (about 30 Å) which was close to the molecular length of the surfactants. The assemblies were decomposed during gel column chromatography; viz., they were not as stable as the liposomes of lecithins. The morphology was discussed in conjunction with a steric effect of the isoprenoid chain.

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Authors and Affiliations

  1. Dept. of Bioapplied Chemistry Faculty of Engineering, Osaka City University, Sumiyoshi-ku, 558, Osaka, Japan

    K. Yamauchi, K. Togawa, T. Moriya & M. Kinoshita

Authors
  1. K. Yamauchi
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  2. K. Togawa
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  3. T. Moriya
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  4. M. Kinoshita
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Yamauchi, K., Togawa, K., Moriya, T. et al. Novel properties of molecular assemblies of isoprenoid surfactants. Colloid Polym Sci 273, 96–100 (1995). https://doi.org/10.1007/BF00655679

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  • DOI: https://doi.org/10.1007/BF00655679

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