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Polyoxometalates: formation, structures, principal properties, main deposition methods and application in sensing

机译:多金属氧酸盐:形成,结构,主要性质,主要沉积方法及其在传感中的应用

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摘要

Today, sensing represents one of the key topics in current science and technology. Polyoxometalates (POMs), which are defined as early transition metal clusters, are considered as one of the most growing fields of research and development in sensing. This paper discusses the promising prospects of POMs in sensing. The paper starts with brief definitions about the formation of POMs. The two basic structures of POMs, Keggin and Dawson, as well as some combined structures are discussed. The interesting properties of POMs particularly as acid catalysts, in medicine, in redox chemistry and in magnetism are briefly mentioned. The main methods used for the deposition of POMs on solid supports (substrates) including chemisorption, electrodeposition, encapsulation in polymers and sol-gels, immobilization using the Langmuir-Blodgett process, layer by layer assemblies as well as deposition via formation of hybrid POM-organic moieties are discussed with their advantages and disadvantages. Finally, the potential applications of immobilized POMs on solid substrates as sensors for the detection and determination of analytes both in liquid and in the gas phase are addressed and compared.
机译:如今,传感已成为当前科学技术的关键主题之一。多金属氧酸盐(POM)被定义为早期过渡金属簇,被认为是传感领域研究与开发中增长最快的领域之一。本文讨论了POM在传感方面的有前途的前景。本文从有关POM形成的简要定义开始。讨论了POM的两个基本结构Keggin和Dawson,以及一些组合结构。简要提到了POM的有趣特性,尤其是在医学,氧化还原化学和磁性方面作为酸催化剂。将POM沉积在固体支持物(基质)上的主要方法包括化学吸附,电沉积,在聚合物和溶胶-凝胶中的包封,使用Langmuir-Blodgett工艺固定化,逐层组装以及通过形成混合POM-讨论了有机部分的优缺点。最后,解决并比较了固定化的POM在固体基质上作为在液体和气相中检测和测定分析物的传感器的潜在应用。

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