caa a22 4500 475763963 CHVBK 20180406123559.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1007/s003960000293 doi (NATIONALLICENCE)springer-10.1007/s003960000293 Structure of salted-out, solubilized micelles and microemulsions on the perfluorinated anionic surfactant tetraethylammonium perfluorooctyl sulfonate studied by cryogenic transmission electron microscopy [Elektronische Daten] [M. Matsumoto, C. E. McNamee, D. P. Bossev, M. Nakahara, T. Ogawa]  Tetraethylammonium perfluorooctyl sulfonate (TEAFOS; critical micelle concentration, 1 mM), which forms a threadlike micelle in its pure solution, was adopted to study the structure of salted-out, solubilized micelles and microemulsions by cryogenic transmission electron microscopy. The concentration of the surfactant was kept constant at 60 mM. The micelle solution salted out with LiNO3 provided a surfactant phase in the presence of a clear interface. The surfactant phase was studded, being formed of homogeneously dispersed spherical micelles, and had no obvious threadlike forms. The micelles, which solubilized the maximum amount of perfluorinated oil, were spherical and had the same size as isolated spherical micelles in pure TEAFOS solution. The microemulsions were formed in the presence of perfluorinated alcohol as cosurfactant and the particles were rotund even when the concentration of the perfluorinated oil was equivalent to that for solubilization and the sizes increased with increasing oil content. The difference in size between the solubilized micelles and microemulsions with the same amount of oil suggested that the oil molecules had been solubilized between palisades of perfluorinated alkyl chains in the micelles and had dissolved in the cores of the microemulsions. Springer-Verlag Berlin Heidelberg, 2000 Key words Perfluorinated anionic surfactant nationallicence Cryogenic transmission electron microscopy nationallicence Micelle nationallicence Solubilization nationallicence Microemulsion nationallicence Matsumoto M. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut McNamee C. E. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut Bossev D. P. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut Nakahara M. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut Ogawa T. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut https://doi.org/10.1007/s003960000293 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960000293 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Matsumoto M. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut NATIONALLICENCE 700 1- McNamee C. E. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut NATIONALLICENCE 700 1- Bossev D. P. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut NATIONALLICENCE 700 1- Nakahara M. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut NATIONALLICENCE 700 1- Ogawa T. Institute for Chemical Research Kyoto University Uji, Kyoto 611-0011, Japan e-mail: matsumoto@scl.kyoto-u.ac.jp Tel.: 81-774-383072 Fax: 81-774-383014, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer