300 MHz NMR Spectrometer

300 MHz 核磁共振波谱仪

• 批准号: 536629481
• 金额: --
• 依托单位: Albert-Ludwigs-Universität Freiburg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2024
• 资助国家: 德国
• 起止时间: 2023-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/536629481?language=en
• 关键词: 300; MHz; NMR; Spectrometer

The MagRes network of the Albert Ludwig University Freiburg requires a 300 MHz NMR spectrometer with a "standard bore" magnet (SB) at the "Institute of Physical Chemistry" (IPC) site. The 300 MHz NMR spectrometer applied for, together with a 600 MHz NMR spectrometer, forms the main research NMR instrumentation at the MagRes site at the IPC. Mostly liquid NMR experiments are carried out there, with a much smaller proportion of solid-state NMR experiments. The main focus is on extensive investigations of light-induced paramagnetic intermediates using the photo-CIDNP method (CIDNP: (photo-)chemically induced dynamic nuclear polarisation) using a special in-situ illumination apparatus. With the simultaneous availability of pulse and continuous-wave lasers (cw lasers) for sample excitation, the NMR devices at the IPC within the MagRes network offer all interested users of the Albert-Ludwigs-University of Freiburg the unique possibility to perform in-situ light-induced NMR experiments, e.g. to investigate the kinetics of photoreactions NMR spectroscopically or to start chemical reactions triggered by light. The 300 MHz NMR instrument applied for is a replacement for an existing 300 MHz NMR spectrometer that has been in operation since 1987; a console was replaced in 1997. The old instrument is extremely susceptible to faults and no longer permits controlled measurement operation. The availability of spare parts can no longer be guaranteed by the manufacturer. In recent years, it has been possible to obtain used spare parts from other NMR sites at considerable cost in terms of time and money; however, repairs have always resulted in only a short-term solution to the problems. In addition, the high evaporation rates for helium and nitrogen of the magnet, which has been in operation since 1987, lead to very high maintenance costs due to the constantly rising price of liquid helium. Therefore, a complete spectrometer is applied for.

阿尔伯特·路德维希大学（Albert Ludwig University）弗莱堡（Freiburg）的MAGRES网络需要300 MHz NMR光谱仪，并在“物理化学研究所”（IPC）站点上带有“标准孔”磁铁（SB）。 300 MHz NMR光谱仪与600 MHz NMR光谱仪一起应用了IPC的MAGRES位置的主要研究NMR仪器。大部分液体NMR实验是在此进行的，固态NMR实验的比例要小得多。主要重点是使用Photo-CIDNP方法（CIDNP：（（照片））使用特殊的原位照明设备对光诱导的顺磁性中间体进行广泛研究。借助脉冲和连续波激光器（CW激光器）进行样品激发，MAGRES网络中IPC的NMR设备为弗莱堡的Albert-Ludwigs-University的所有感兴趣的用户提供了独特的可能性，可以在Situ诱发的NMR内部的NMR实验中，例如。为了从光谱上研究NMR的光反应动力学或开始由光引发的化学反应。适用的300 MHz NMR仪器是自1987年以来一直在运行的现有300 MHz NMR光谱仪的替代。 1997年更换了控制台。旧仪器非常容易受到断层的影响，并且不再允许控制测量操作。制造商无法保证备件的可用性。近年来，就时间和金钱而言，可以从其他NMR站点获得二手零件。但是，维修始终仅导致解决问题的短期解决方案。此外，自1987年以来一直在运行的氦气和氮的高蒸发率，由于液体氦气价格不断上涨，导致了很高的维护成本。因此，应用完整的光谱仪。