Structural Characterization of Nanoporous Materials by Solid-state NMR and Vibrational Spectroscopy

纳米多孔材料包括微孔材料和金属有机骨架（MOFs）在催化、分离、传感器、燃料电池和固态器件中具有许多工业和技术应用。新出现的用途包括医疗药物输送系统、农业和环境应用。纳米多孔材料的表征是非常重要的，因为详细了解这些材料的关键性能和它们独特的结构之间的关系对于开发新的应用和/或改善它们当前的性能是至关重要的。我们的研究将集中在以下领域：[1]在微孔材料（也称为分子筛）中有很大的工业兴趣。然而，由于这些材料的成核和生长在分子水平上没有完全理解，具有所需性能的新型框架的合理设计仍然是困难的。我们将利用我们在固体核磁共振和振动光谱方面的专业知识，仔细研究微孔材料的形成机制。从这些实验中获得的信息将提高我们合理设计具有特定应用所需特性的新型材料的能力。[2]MOFs是一类新型的纳米多孔材料，在氢气吸附、二氧化碳存储和催化等方面具有广阔的应用前景。我们将开发固态NMR光谱作为探测其金属环境的表征工具。我们预计，这项研究将提供结构知识，使我们能够巧妙地控制和定制这些金属中心环境的特定应用。[3]我们将探索使用高外部压力来微调MOF性质的可能性。这里的目的是定制的材料，作为大小和形状选择性吸附剂适合分离。[4]我们将在溶剂热条件下开发多孔金属硫属化物半导体的合成，以制备可用于形状选择性太阳能转换和太阳能转换的新型多孔半导体材料。

Nanoporous materials including microporous materials and metal-organic frameworks (MOFs) have many industrial and technological applications in catalysis, separation, sensors, fuel cells, and solid-state devices. Emerging uses lie in the areas of medical drug delivery systems, agricultural and environmental applications. Nanoporous materials characterization is extremely important because a detailed understanding the relationship between the key properties of these materials and their unique structures is crucial for developing new applications and/or improving their performance for their current uses. Our research will focus on the following areas: [1] There is a large industrial interest in microporous materials (also known as molecular sieves). However, since the nucleation and growth of these materials are not completely understood at the molecular level, a rational design of novel frameworks with desired properties is still difficult. We will use our expertise in solid-state NMR and vibrational spectroscopy to carefully study the formation mechanisms of microporous materials. The information obtained from such experiments will enhance our ability to rationally design novel materials with desired properties for specific applications. [2] MOFs are a class of new nanoporous materials with promising properties for hydrogen adsorption, carbon dioxide storage and catalysis. We will develop solid-state NMR spectroscopy as a characterization tool for probing their metal environments. We anticipate that the research will provide structural knowledge that will allow us to subtly control and tailor these metal center environments for specific applications. [3] We will explore the possibility of using high external pressure to fine tune MOF properties. The objective here is to tailor the materials to serve as size- and shape-selective adsorbents suitable for separation. [4] We will develop syntheses of porous metal chalcogenide semiconductors under solvothermal conditions for the expressed purpose of preparing novel porous semiconducting materials that can be potentially used for shape-selective photocatalysis and solar energy conversion.