MAS NMR machine, 400 MHz WB

MAS NMR 机，400 MHz WB

• 批准号: 523962358
• 金额: --
• 依托单位: Humboldt-Universität zu Berlin
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/523962358?language=en
• 关键词: MAS; NMR; machine; 400; MHz

The department of chemistry of the Humboldt-Universität zu Berlin requires a solid-state NMR device for measuring solid-state compounds. This is a replacement purchase of a very well utilised device, which, however, is now 35 (magnet) and 20 (console) years old. Repairs by the manufacturer can no longer be guaranteed. Both the personnel equipment and the experience in the field of solid-state NMR spectroscopy are existing. Due to the age of the magnet, it has not been possible to connect it to the helium recovery system, i.e. a new device would also save running costs considerably. The device is needed by a number of research groups that deal with scientific topics requiring MAS-NMR measurements. The device will also be used within the framework of research networks by the working groups listed in the application. By far the most frequent experiments involve 1H and 19F NMR measurements, which is why a new probe head for these measurements is part of the application. The old sample head was procured 17 years ago and requires increased maintenance and repairs. Depending on the field of application, a wide range of nuclei (mainly: 13C, 19F, 7Li, 27Al, 17O, 31P, 15N, 29Si, 89Y, 119Sn, 125Te,11B, 2H) are also measured. Magnetisation transfer experiments from 1H or 19F to insensitive 13C nuclei play a major role. For these experiments, a high concentration and magnetisation transfer from more sensitive nuclei such as 1H, 19F is crucial. Additional decoupling on a third channel is not necessary, which is why a 2-channel spectrometer is sufficient.

Humboldt-Universität zu柏林的化学系需要一台固态NMR设备来测量固态化合物。这是一个非常好的利用设备的更换购买，然而，现在是35（磁铁）和20（控制台）岁。制造商的维修不再有保证。在固态核磁共振光谱学领域既有人员设备，也有经验。由于磁体的老化，不可能将其连接到氦回收系统，即新设备也可以大大节省运行成本。许多研究小组需要该设备来处理需要MAS-NMR测量的科学主题。该设备还将在申请中列出的工作组的研究网络框架内使用。到目前为止，最常见的实验涉及1H和19 F NMR测量，这就是为什么用于这些测量的新探头是应用程序的一部分。旧的采样头是17年前采购的，需要更多的维护和修理。根据应用领域的不同，还可以测量各种核（主要是：13 C，19 F，7 Li，27 Al，17 O，31 P，15 N，29 Si，89 Y，119 Sn，125 Te，11 B，2 H）。从1H或19 F到不敏感的13 C核的磁化转移实验起着重要作用。对于这些实验，来自更敏感的核（如1H、19 F）的高浓度和磁化转移是至关重要的。无需在第三通道上进行额外的去耦，这就是为什么双通道光谱仪就足够了。