ミセル, ベシクル, 高分子電解質溶液における励起エネルギー移動, 光電子移動現象

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概要

• 論文の詳細を見る

• Behaviors of heteroexcimers between pyrenes and N, N-dimethylanilines as well as dicyanobenzenes in aqueous micellar solutions, detergent vesicles and bilayer liposomes have been investigated by means of fluorescence measurements and laser photolysis. Strong quenching of pyrene fluorescence with those quenchers was observed while no heteroexcimer fluorescence was detected in detergent micellar and vesicle solutions. However, weak heteroexcimer fluorescence of pyrene-dimethylaniline systems was detected in single bilayer liposomes of phosphatidylcholines. The dependences of relative fluorescence yield and fluorescence decay curve upon the quencher concentration have been explained with equations derived on the basis of simple model. In accordance with the results of fluorescence measurements, the laser photolysis studies have demonstrated clearly the formation of ion radicals due to electron transfer in the case of micelles and detergent vesicles. Moreover, important roles of surface charges of these systems in the photoinduced charge separation processes have been confirmed. On the other hand, aggregation of dye ions due to the interaction with detergent micelles, premicelles, vesicles and high polymer electrolyte with opposite charges has been investigated by measuring the excimer formation and excitation transfer phenomena with ns and ps laser spectroscopic methods, results of which provide important informations upon the formation processes and structures of these organized systems.

• 日本膜学会の論文

著者

• 又賀 昇

  大阪大学基礎工学部合成化学科

• 又賀 昇

  大阪大学

• 又賀 昇

  大阪大学基礎工学部

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