Molecular Aggregation of Aqueous Carboxybetaines with Bulky Alkyl Chains : Formation of Vesicles and Lamellar Liquid Crystalline Aggregates
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概要
- 論文の詳細を見る
Molecular aggregation of aqueous carboxybetaines with bulky hydrophobic alkyl chains was examined. Monoalkyl carboxybetaine with a phytol.like structure in the alkyl chain, namely, 3, 7, 11, 15.Tetramethylhexadecyl carboxybetaine (TetraMeC16BE), formed vesicles, as indicated by freeze.fracture electron microscopy. The vesicles would be formed because of the truncated cone structure of the TetraMeC16BE which has four methyl groups in the alkyl chain and zwitterionic hydrophilic head-group. In contrast, didodecyl carboxybetaine (2C12BE), which has two alkyl chains, adopted a lamellar liquid crystalline structure, as indicated by X.ray diffraction analysis. However, when 2C12BE was mixed with dodecyl carboxybetaine, which has a single alkyl chain, vesicles formed; that is, mixing a carboxybetaine bearing bulky alkyl chains with one bearing a single alkyl chain permitted the formation of a closed.shell vesicular membrane with spherical curvature.
- 日本膜学会の論文
- 2011-11-01
著者
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Ichikawa Sosaku
Graduate School of Life and Environmental Sciences, University of Tsukuba
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Sato Seigo
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Ichikawa Sosaku
Graduate School Of Life And Environmental Sciences Univ. Of Tsukuba
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Homma Rika
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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