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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >Size-matching effect on inorganic nanosheets: Control of distance, alignment, and orientation of molecular adsorption as a bottom-up methodology for nanomaterials
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Size-matching effect on inorganic nanosheets: Control of distance, alignment, and orientation of molecular adsorption as a bottom-up methodology for nanomaterials

机译：对无机纳米片的尺寸匹配作用：控制分子吸附的距离，排列和方向，作为纳米材料的自下而上方法

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摘要

We have been investigating complexes composed of nanolayered materials with anionic charges such as clay nanosheets and dye molecules such as cationic porphyrins. It was found that the structure of dye assembly on the layered materials can be effectively controlled by the use of electrostatic host-guest interaction. The intermolecular distance, the molecular orientation angle, the segregation/integration behavior, and the immobilization strength of the dyes can be controlled in the clay-dye complexes. The mechanism to control these structural factors has been discussed and was established as a size-matching effect. Unique photochemical reactions such as energy transfer through the use of this methodology have been examined. Almost 100% efficiency of the energy-transfer reaction was achieved in the clay-porphyrin complexes as a typical example for an artificial light-harvesting system. Control of the molecular orientation angle is found to be useful in regulating the energy-transfer efficiency and in preparing photofunctional materials exhibiting solvatochromic behavior. Through our study, clay minerals turned out to serve as protein-like media to control the molecular position, modify the properties of the molecule, and provide a unique environment for chemical reactions.
机译：我们一直在研究由具有阴离子电荷的纳米层材料（例如粘土纳米片）和染料分子（例如阳离子卟啉）组成的复合物。已经发现，通过使用静电主客相互作用，可以有效地控制在层状材料上的染料组装体的结构。可以在粘土-染料配合物中控制分子间距离，分子取向角，偏析/整合行为和染料的固定强度。已经讨论了控制这些结构因素的机制，并将其建立为大小匹配效应。已经研究了独特的光化学反应，例如通过使用这种方法进行的能量转移。作为人工光收集系统的典型实例，在粘土-卟啉配合物中实现了几乎100％的能量转移反应效率。发现控制分子取向角可用于调节能量转移效率和用于制备表现出溶剂致变色行为的光功能材料。通过我们的研究，粘土矿物被证明可以作为蛋白质样介质来控制分子位置，修饰分子特性并为化学反应提供独特的环境。

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