Covalently Cross-Linked Coordination Crystals

该项目的目标是适应晶体工程的最新进展，以制备共价交联配位晶体，在分离和离子传导中潜在有用的材料。我们使用模板方法。我们合成了刚性纳米级有机分子，然后通过不稳定的有机配体-金属配位键在固态中初始组装。在第二步中，我们在不改变宿主晶体结构的情况下引入客体分子。这些客体分子将原始的有机分子相互交联。通过这种方式，我们能够获得一种新的有机固体体系，即结晶的多维共价键有机固体。这种材料在化学上和物理上都比现有的有机材料更坚固。这个研究项目是与研究生和本科生一起进行的，他们接受了最先进的晶体工程培训。两个不同领域的基本原理，有机反应方法学和固体化学，应用于设计有用的晶体材料。下一代固态器件将需要结合典型有机化合物的功能特异性和传统无机固体的整体结构的材料。在这个项目中，开发了设计这些材料的方法，其中有机和无机部分在分子尺度上连接在一起。有机化学、无机化学和固态化学之间需要一种重要的协同作用，这种协同作用对成功设计有用的器件至关重要。

The goal of this project is to adapt recent advances in crystal engineering for the preparation of covalently cross-linked coordination crystals, materials potentially useful in separations and ion conduction. We use a template methodology. We synthesize rigid nanoscale organic molecules which are then initially assembled in the solid state via labile organic-ligand-to-metal coordination-bonds. In the second step we introduce guest molecules without altering the host crystal structure. These guest molecules cross-link the original organic molecules to each other. In this way, we are able to access a new regime of organic solids viz., crystalline multi-dimensional covalently bonded organic solids. Such materials will be chemically and physically more robust than existing organic materials. This research program is carried out together with graduate and undergraduate students who receive state-of-the-art training in crystal engineering. The fundamentals of two different fields, organic reaction methodology and solid state chemistry, are applied in the design of useful crystalline materials. The next generation of solid state devices will require materials that combine both the functional specificity of typical organic compounds plus the global architecture of traditional inorganic solids. In this project methodologies are developed for designing routes to these materials in which the organic and inorganic portions are joined together at a molecular scale. An important synergism is needed here between organic, inorganic and solid state chemistry, a synergism which is vital to the successful design of useful devices.