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首页> 外文期刊>Electroanalysis >Electrochemical Study of Anionic Ferrocene Derivatives Intercalated in Layered Double Hydroxides: Application to Glucose Amperometric Biosensors
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Electrochemical Study of Anionic Ferrocene Derivatives Intercalated in Layered Double Hydroxides: Application to Glucose Amperometric Biosensors

机译：层状双氢氧化物中间嵌入的阴离子二茂铁衍生物的电化学研究：葡萄糖倍转生物传感器的应用

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摘要

Layered double hydroxides (Zn2Cr(OH)(6)X center dot nH(2)O LDH) containing (3-sulfopropyl)ferrocene-carboxylate (FePSO3) and 1,1'-bis(3-sulfopropyl)ferrocene-carboxylate (Fe(PSO3)(2)) as interlayer anions (X) have been prepared by the coprecipitation method and characterized by PXRD, FTIR, SEM and XPS. The electrochemical behavior of these hybrid materials has been evaluated by cyclic voltammetry. A new amperometric biosensor based on the immobilization of glucose oxidase in ZnCr-FePSO3 hybrid material was presented, the intercalated anions playing the role of mediators that shuttle electrons between the FAD centers in the enzyme and the electrode surface. The performance of the resulting biosensor for glucose determination under anaerobic conditions was evaluated by chronoamperometry at 0.5 V. The sensitivity (65 mA M-1 cm(-2)) determined in the concentration range 10-25 mu M is higher than sensitivities reported for other glucose biosensors based on LDH host matrices.
机译：层状双氢氧化物（Zn2CR（OH）（6）X中心点NH（2）O LDH）（3-磺丙基）二茂铁 - 羧酸甲酸酯（FEPTH3）和1,1'-BIS（3-磺丙基）二茂茂丙烯 - 羧酸酯（Fe （PSO3）（2））作为层间阴离子（X）已通过CopRecipIpition方法制备，并通过PXRD，FTIR，SEM和XPS表征。 通过循环伏安法评估这些杂化材料的电化学行为。 提出了一种基于ZnCR-FEPSO3杂交材料中葡萄糖氧化酶的固定的新的血管体传感器，介相阴离子在酶和电极表面中的FAD中心之间的培养师的作用。 通过0.5V的计时法评估所得生物传感器在厌氧条件下进行葡萄糖测定的性能。在浓度范围内测定的灵敏度（65mA m-1cm（-2））高于报道的敏感性 基于LDH主体基质的其他葡萄糖生物传感器。

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