Inorganic Monolayers Formed at Organic Templates

小行星9530453 该提案概述了先前NSF研究的延续，用于开发和表征使用Langmuir-Blodgett（LB）方法形成的新的混合有机/无机单层和多层薄膜材料。该方法是将无机扩展的晶格结构引入到有机单层组装体中，从而将许多无机晶格固有的结构特征和合作现象引入到膜中，同时保持由有机组装体提供的单层控制。 将使用层状固态结构，因为它们提供最高的成功概率，因为无机晶格能明显有利于形成层。具体而言，拟议的研究包括三个方面的努力：1）扩大为制备含有扩展晶格无机网络的新LB材料而开发的协议。2)对新材料进行化学和结构表征，并解释结构差异。3)研究顺磁性材料的磁性。 几类混合的有机/无机组件最近受到关注，因为研究人员已经意识到，通过有机和无机网络的组合，大量的新的固态结构是可能的，通常具有可调的体积和界面性质。 实例包括柱撑粘土、有机/无机层状固体、具有有机客体的沸石、在无机表面上的自组装有机膜和借助于有机表面活性剂形成的无机介观结构。除了这些类别的材料所承诺的结构和化学多样性之外，有机和无机组分组合成“双网络”组件打开了将通常仅与一种类型的材料或另一种类型的材料相关联的物理性质的复合物工程化为一种材料的可能性。一个潜在的有趣的“双网络”材料的例子是将磁性无机晶格与导电有机网络相结合。尽管有巨大的潜力，但对这些类型材料的详细研究仍然非常年轻。 拟议的研究解决了三个重要问题。 是什么驱动了固态结构，以及如何控制它们？如果复合材料的性能是理想的，如何才能实现这一点？如何调整网络的耦合，使其单独运行或协同运行？

9530453 Talham This proposal outlines a continuation of a prior NSF research for the development and characterization of new mixed organic/inorganic monolayer and multilayer thin film materials formed using Langmuir-Blodgett (LB) methods. The approach is to incorporate inorganic extended lattice structures into organic monolayer assemblies thereby introducing into the films structural features and cooperative phenomena which are inherent to many inorganic lattices, while at the same time maintaining the monolayer control afforded by the organic assembly. Layered solid- state structures will be used because they offer the highest probability of success as the inorganic lattice energy clearly favors forming layers. Specifically, the proposed research consists of three efforts: 1) To expand on the protocol developed for preparing new LB materials containing extended-lattice inorganic networks. 2) To chemically and structurally characterize new materials and account for structural differences. 3) To investigate the magnetic properties of paramagnetic materials. %%% Several classes of mixed organic/inorganic assemblies have received attention recently as researchers have realized that through the combination of organic and inorganic networks a vast array of new solid-state structures is possible often with tunable bulk and interfacial properties. Examples include pillared clays, organic/inorganic layered solids, zeolites with organic guests, self-assembled organic films at inorganic surfaces, and inorganic mesostructures formed with the aid of organic surfactants. In addition to the structural and chemical diversity that these classes of materials promise, the combination of organic and inorganic components into a "dual-network" assembly opens the possibility of engineering into one material a composite of physical properties that are normally only associated with one type of material or the other. An example of a potentially interesting "dualnetwork" material would be one that combines a magnetic inorganic lattice with a conducting organic network. Despite the tremendous potential, detailed studies of these types of materials are still quite young. The proposed research addresses three important questions. What drives the solid-state structures and how can they be controlled? If composite properties are desirable, how can this be achieved? How can coupling of the networks be tuned to behave separately or in synergy?