Electrophoretic NMR with Toroid Cavity Probes

该研究项目由分析和表面化学计划和多学科活动办公室支持，重点是开发用作电泳NMR检测器的环形腔探针。 查佩尔山的北卡罗来纳州大学的约翰逊教授和他的学生将建造一个环形腔探针，表征其作为电泳检测器的性能，并编写处理数据所需的程序。 该仪器将能够检测混合物中的所有成分，分析时间将小于100毫秒。 这些测量将提供有关有序介质（如胶束）中发生的化学相互作用的信息。 这些信息将有助于理解这些材料在许多分离过程中作为伪固定相的行为。 在这个项目中，环形腔探测器将被构造和设计用于核磁共振光谱学，以允许电泳过程的研究。 除了建造这种新的核磁共振光谱检测器外，还将编写程序来获取和处理这些实验中产生的数据。 混合物中所有成分的分析都是可能的，分析时间将小于100毫秒。 这种新的仪器能力将有应用范围从显微镜成像的相互作用，发生在高压流体的研究。

This research project, which is supported by the Analytical and Surface Chemistry Program and the Office of Multidisciplinary Activities, focuses on the development of a toroid cavity probe for use as an NMR detector for electrophoresis. Professor Johnson and his student at the University of North Carolina at Chapel Hill will construct a toroid cavity probe, characterize its performance as an electrophoresis detector, and write programs necessary for the handling of data. This instrument will be able to detect all components in a mixture and the analysis time will be less than 100 msec. These measurements will provide information about the chemical interactions that occur in ordered media, such a micelles. This information will be useful in understanding the behavior of these materials as pseudo-stationary phases in many separation processes. In this project toroid cavity detectors will constructed and designed for use in nuclear magnetic resonance spectroscopy to permit studies of electrophoretic processes. In addition to the construction of this new detector for nuclear magnetic resonance spectroscopy, programs will be written to acquire and handle the data produced in these experiments. Analysis of all components in a mixture will be possible and the analysis time will be less than 100 milliseconds. This new instrumental capability will have applications ranging from microscopic imaging to the study of the interactions that occur in high pressure fluids.