Redox Behavior of Fe(CN)63−/4− Ions on the Electrodes Coated with a Layer-by-Layer Film Composed of Carboxymethylcellulose
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概要
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Multilayer thin films were prepared on the surface of a gold (Au) electrode using sodium carboxymethylcellulose (CMC) to elucidate the suitability of the polysaccharide-based thin film as a scaffold for constructing chemical sensors. A quartz crystal microbalance study revealed that an alternate deposition of CMC and poly(allylamine hydrochloride) (PAH) gives an exponentially growing multilayer films on the surface of a quartz resonator. The PAH-CMC film-coated Au electrodes exhibited a redox response to Fe(CN)63−/4− ions in solution, depending on the number of layers in the film. The PAH-CMC films were permeable to Fe(CN)63−/4− ions irrespective of the thickness and the sign of electric charges on the outermost surface of the film, suggesting a loosely-packed porous nature of the film. It was found that the film contained electrostatic binding sites to which Fe(CN)63−/4− ions can be strongly immobilized.
- 公益社団法人 電気化学会の論文
著者
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Anzai Jun-ichi
Graduate School Of Pharmaceutical Sciences Tohoku University
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NOGUCHI Takio
Graduate School of Pharmaceutical Sciences, Tohoku University
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