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Clay minerals as photochemical reaction fields

机译:粘土矿物作为光化学反应场

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This article surveys the intercalation characteristics of a number of clay minerals which can be utilized as host materials for photofunctional organic-inorganic hybrid systems as well as photochemical anisotropic reaction fields. The introduction of this review describes the chemical compositions and the structural features of various kinds of artificial as well as naturally produced clays. The chemical structures of these clays are often considered to be complicated due to their unfamiliar names which are sometimes taken from the areas where they originate although, structurally, only slight differences actually exist. The second chapter summarizes the adsorption and aggregation properties of typical organic dyes in clays. The aggregation behavior is sensitive to the kind and amount of metallic ions present in the lattice of the clays, the amount of adsorbed water as well as the structure of the organic guests to be intercalated. All of these factors are discussed in relation to the adsorption and aggregation behavior. In the third chapter, the photochemical reactions of excited metal complexes adsorbed in clays are discussed. Electron transfers for [Ru(bpy)_3]~(2+) in clays are described, showing that the clay layers provide reaction fields which stabilize the resulting charge separated species. This article aims to provide important insights into the fundamental mechanisms and properties of anisotropic reaction fields for the applications in design of promising, new photochemical and photobiological systems and processes.
机译:本文调查了许多粘土矿物的插层特性,这些粘土矿物可用作光功能有机-无机杂化系统以及光化学各向异性反应场的基质材料。这篇综述的介绍描述了各种人造粘土和天然粘土的化学成分和结构特征。这些粘土的化学结构通常被认为是复杂的,因为它们的名称不熟悉,有时取自它们的起源地区,尽管实际上在结构上仅存在微小差异。第二章总结了典型有机染料在粘土中的吸附和聚集特性。聚集行为对存在于粘土晶格中的金属离子的种类和数量,吸附的水的数量以及要插入的有机客体的结构敏感。所有这些因素都与吸附和聚集行为有关。在第三章中,讨论了吸附在粘土中的激发金属配合物的光化学反应。描述了[Ru(bpy)_3]〜(2+)在黏土中的电子转移,表明黏土层提供了可稳定所得电荷分离物质的反应场。本文旨在提供对各向异性反应领域的基本机理和性质的重要见解,以用于有前途的新型光化学和光生物学系统和工艺的设计。

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