Excimer formation and phase separation of hydrocarbon and fluorocarbon bilayer membranes.

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概要

• 論文の詳細を見る

• The benzene chromophore contained in double-chain(hydrocarbon) ammonium amphiphiles gives both of monomer and excimer fluorescence in the fluid(liquid crystalline) bilayer organization. The excimer emission disappears by phase transition to the rigid(crystalline) bilayer. In contrast, the corresponding fluorocarbon bilayer, in the absence of phase transition phenomena, shows excimer emission at all temperatures(15–50 °C). The excimer emission decreases when these probe amphiphiles are diluted in matrix bilayers. These results are applied to study the phase separation behavior of hydrocarbon and fluorocarbon bilayer membranes. The fluorocarbon bilayer is not extensively miscible with the hydrocarbon bilayer, and <I>vice versa</I>. The miscibility is influenced additionally by the chemical structure of amphiphiles. The rate of mixing is determined by the component miscibility as well as by the aggregate morphology. The DSC study supports these conclusions and further indicates that an unsymmetrical, double-chain (one hydrocarbon and one fluorocarbon chains) amphiphile can promote mixing of typical hydrocarbon and fluorocarbon bilayers.

• 公益社団法人 日本化学会の論文

著者

• Kunitake Toyoki

  Department Of Chemical Engineering & Technology Faculty Of Engineering Kyushu University

• Nakashima Naotoshi

  Department Of Applied Chemistry Faculty Of Engineering Kyushu University

• Tawaki Shin-ichiro

  Department of Organic Synthesis, Faculty of Engineering, Kyushu University

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