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首页> 外文期刊>Electroanalysis >Spectroelectrochemical sensing based on multimode selectivity simultaneously achievable in a single device. 18. Preparation and characterization of cross-linked quaternized poly(4-vinylpyridinium) films
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Spectroelectrochemical sensing based on multimode selectivity simultaneously achievable in a single device. 18. Preparation and characterization of cross-linked quaternized poly(4-vinylpyridinium) films

机译：可在单个设备中同时实现基于多模式选择性的光谱电化学传感。 18.交联季铵化聚（4-乙烯基吡啶）薄膜的制备与表征

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摘要

A novel selective film comprised of cross-linked quaternized poly(4-vinylpyridine) has been developed for use in a spectroelectrochemical sensor. The development, performance and characterization of this film are described. Ferrocyanide was used as a model spectroelectrochemical analyte. This film has demonstrated a number of advantages over other films used in the sensor, including outstanding ruggedness and selectivity, rapid response, capability for multiple measurements on one film, and a fast, simple preparation. Ion pairing between ferrocyanide and quaternized pyridine in the film was observed, causing asymmetry in cyclic voltammograms of ferrocyanide. Physical changes in the film were monitored using spectroscopic ellipsometry as the film was exposed to supporting electrolyte and ferrocyanide/supporting electrolyte solutions. The sensor exhibits a linear response to ferrocyanide over the range 0.008-0.2 mM.
机译：已经开发出一种由交联的季铵化聚（4-乙烯基吡啶）组成的新型选择性膜，用于光谱电化学传感器。描述了该膜的开发，性能和特性。亚铁氰化物用作模型光谱电化学分析物。与传感器中使用的其他膜相比，该膜具有许多优势，包括出色的坚固性和选择性，快速响应，对一个膜进行多次测量的能力以及快速，简单的制备方法。在膜中观察到亚铁氰化物和季铵化吡啶之间的离子配对，导致亚铁氰化物的循环伏安图中不对称。当膜暴露于支持电解质和亚铁氰化物/支持电解质溶液时，使用光谱椭圆偏振法监测膜中的物理变化。该传感器在0.008-0.2 mM范围内对亚铁氰化物表现出线性响应。

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