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Spectroelectrochemical analysis of ion-transfer and adsorption of the PAMAM dendrimer at a polarized liquid|liquid interface


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タイトル: Spectroelectrochemical analysis of ion-transfer and adsorption of the PAMAM dendrimer at a polarized liquid|liquid interface
著者: Nagatani, Hirohisa / Ueno, Takeshi / Sagara, Takamasa
発行日: 2008年 9月20日
引用: Electrochimica Acta, 53(22), pp.6428-6433; 2008
抄録: Interfacial behavior of the fourth generation polyamidoamine (G4 PAMAM) dendrimer at the water|1,2-dichloroethane (DCE) interface was studied by the cyclic voltammetry and the potential modulated fluorescence (PMF) spectroscopy. The irregular voltammetric responses were observed at positively polarized interfaces. Cyclic voltammogram was strongly dependent on pH and concentrations of G4 PAMAM dendrimer and organic supporting electrolyte. PMF spectroscopy was successfully used for analyzing the interfacial mechanism of the dendrimer by adding an anionic porphyrin derivative as a fluorescent probe. Results of the PMF measurements demonstrated that G4 PAMAM dendrimer was transferred across the interface accompanied by its adsorption step at pH 7, while, in the alkaline condition, the adsorption process was not apparently involved in the interfacial behavior.
キーワード: PAMAM dendrimer / Liquid|liquid interface / Adsorption / Ion transfer / Potential modulated fluorescence
URI: http://hdl.handle.net/10069/17911
ISSN: 00134686
DOI: 10.1016/j.electacta.2008.04.081
権利: Copyright (c) 2008 Elsevier Inc. All rights reserved.
資料タイプ: Journal Article
原稿種類: author
出現コレクション:060 学術雑誌論文

引用URI : http://hdl.handle.net/10069/17911

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