Acquisition of a Solids Nuclear Magnetic Resonance Spectrometer

该项目提供了一个300兆赫，7特斯拉，宽孔磁铁的核磁共振（NMR）光谱仪，专门用于各种固体材料的基础研究。核磁共振波谱是表征许多非晶和纳米晶固体分子结构的唯一工具。分析了在催化剂、陶瓷和光学材料等方面具有潜在应用价值的三元黄铜矿化合物的基本结构。本文还将分析固态激光和非线性光学材料的结构，这些材料包括染料、非线性光学聚合物和由硅氧化物、混合金属醇氧化物以及醇氧化物和有机聚合物的混合物通过溶胶-凝胶法制备的半导体量子点。将进一步研究聚合物-二氧化硅复合材料和聚合物液晶，非晶体聚合物中胶体二氧化硅晶体的复合材料，以及非线性光学聚合物。另一个项目包括研究改性溶胶-凝胶衍生载体作为固体激光和非线性光学材料，使用混合有机/无机聚合物载体的固体激光材料，以及基于活性掺杂剂的溶胶-凝胶衍生载体的非线性光学材料。对植物细胞壁结构的研究也在计划之中。化学结构的知识将有助于理解材料的性质和功能，并有助于设计性能更好的合成材料。该仪器将由大学内的四个教员和其他几个用户以及大学外的一些个人共享。该仪器还将配备两个5千赫魔角旋转探头。目前有两台液体光谱仪和一台多核核磁共振仪。这将是俄克拉荷马州唯一的固体核磁共振能力。

This project provides an Nuclear Magnetic Resonance (NMR) spectrometer with a 300 MHz, 7 Tesla, wide bore magnet, dedicated to the fundamental investigation of a wide variety of solid materials. NMR spectroscopy is the only tool available for the characterization of the molecular structures of many noncrystalline and nanocrystalline solids. The fundamental structures of ternary chalcopyrite compounds having potential applications as catalysts, ceramics, and optical materials will be analyzed. The structures of solid state laser and nonlinear optical materials containing dyes, nonlinear optical polymers, and semiconductor quantum dots prepared by sol-gel methods from siliconal koxides, from mixed metal alkoxides, and from mixtures of alkoxides and organic polymers will also be analyzed. Additional studies of polymer-silica composites and polymer liquid crystals, composites of colloidal silica crystals in noncrystalline polymers, and nonlinear optical polymers will be studied. Yet another project includes studies of modified sol-gel derived hosts as solid state laser and nonlinear optical materials, solid state laser materials using mixed organic/inorganic polymer hosts, and nonlinear optical materials based on active dopants in a sol-gel derived host. A study of the structures of plant cell walls is also planned. Knowledge of the chemical structures will aid in understanding the properties and functions of the materials and in the design of synthetic materials with improved performance. The instrument will be shared by four faculty and several other users within the university, as well as a few individuals from outside the university. The instrument will also be equipped with two 5 kHz magic angle spinning probes. There are presently two liquids spectrometers and one multinuclear NMR. This will be the only solids NMR capability in the State of Oklahoma.