Electrochemistry and charge transport in sporopollenin particle arrays

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• 作者：Matthew J. Thomasson ; David J. Baldwin ; Alberto Diego-Taboada ; Stephen L. Atkin ; Grahame Mackenzie ; Jay D. Wadhawan
• 关键词：Conducting polymer ; Electron hopping ; Sporopollenin ; Antioxidant
• 刊名：Electrochemistry Communications
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：12
• 期：10
• 页码：1428-1431
• 全文大小：630 K

文摘

Electrochemical oxidation of hollow sporopollenin particles immobilised on an electrode surface is investigated in aqueous acidic solution. Redox activity is demonstrated to occur via a mixture of 2e⁻–2H⁺ and 2e⁻–1H⁺ processes, likely due to the oxidation of conjugated phenolics embedded within the surface-shell of the polymer particles. Charge transport over the surface is suggested to be fast based on comparison with an approximate physicochemical model.