Synthetic bilayer membranes prepared from dialkyl amphiphiles with nonionic and zwitterionic head groups

Yoshio Okahata, Shoichi Tanamachi, Masaru Nagai, Toyoki Kunitake

研究成果: ジャーナルへの寄稿記事

77 引用 (Scopus)

抄録

Dialkyl amphiphiles with nonionic and zwitterionic head groups were prepared. The nonionic group is the polyoxyethylene chain and the zwitterionic group is composed of the combinations of ammonium sulfonate, ammonium phosphate, and ammonium amidate. These dialkyl amphiphiles, when dissolved in water, produced very large aggregates as determined by small-angle light scattering: 1-50 million daltons. The critical micelle concentration was 10-5- 10-6 M. The aggregate morphology was examined by electron microscopy. In the case of the nonionic amphiphile, the chain lengths of both the polyoxyethylene and dialkyl groups were shown to affect the morphology. When the alkyl chain length was C12, C14, C16, and C18 (but not C8), the bilayer formation was observed, and vesicles, lamellae, and disks were found depending on the amphiphile structure. The zwitterionic amphiphiles similarly produced vesicles and lamellae. Most of these aggregates showed the phase transition phenomenon (solid-liquid crystal). The transition temperature rose with increasing alkyl chain lengths in general agreement with that of lecithin.

元の言語英語
ページ(範囲)401-417
ページ数17
ジャーナルJournal of Colloid And Interface Science
82
発行部数2
DOI
出版物ステータス出版済み - 1 1 1981

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Amphiphiles
Membranes
Chain length
Ammonium Compounds
Polyethylene glycols
Lecithin
Liquid Crystals
Lecithins
Critical micelle concentration
Light scattering
Liquid crystals
Electron microscopy
Superconducting transition temperature
Phosphates
Phase transitions
Water

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

これを引用

Synthetic bilayer membranes prepared from dialkyl amphiphiles with nonionic and zwitterionic head groups. / Okahata, Yoshio; Tanamachi, Shoichi; Nagai, Masaru; Kunitake, Toyoki.

:: Journal of Colloid And Interface Science, 巻 82, 番号 2, 01.01.1981, p. 401-417.

研究成果: ジャーナルへの寄稿記事

Okahata, Yoshio ; Tanamachi, Shoichi ; Nagai, Masaru ; Kunitake, Toyoki. / Synthetic bilayer membranes prepared from dialkyl amphiphiles with nonionic and zwitterionic head groups. :: Journal of Colloid And Interface Science. 1981 ; 巻 82, 番号 2. pp. 401-417.
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