Update of the present X-band EPR spectrometer and upgrade with a Q-band facility and closed cycle cryostat for measurements at liquid helium temperatures

更新现有的 X 波段 EPR 光谱仪，并升级 Q 波段设施和闭式循环低温恒温器，用于液氦温度下的测量

• 批准号: 444947649
• 金额: --
• 依托单位: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/444947649?language=en
• 关键词: Update; present; band; EPR; spectrometer

Electron Paramagnetic Resonance (EPR) spectroscopy is the method of choice when characterizing properties, structures, functions, and mechanisms of iron-sulfur-containing metalloproteins, paramagnetic inorganic complexes, and organic radical systems. In this Major Research Instrumentation grant application seven groups of the Technical University of Kaiserslautern (TUK) from the Departments of Chemistry, Physics and Mechanical & Process Engineering describe their current and future research. It is crucial for these seven groups, as well as for other local users and our external collaborators, to update the twenty year-old X-band EPR spectrometer. Due to its age, the instrument is subject to frequent failures and the availability of replacement parts is becoming very problematic. Furthermore, an upgrade with a Q-band facility would enable the interpretation of highly complicated spectra of spin-coupled biological systems and (high spin) inorganic complexes. In addition, an update with a closed cycle cryostat will ensure access to measurements at liquid Helium temperatures at any time. Especially in times of increasingly frequent bottlenecks in the liquid helium supply, the lower Helium consumption and the independence of liquid Helium delivery would be highly advantageous. The update will guarantee the continuation of our EPR-based research activities and the Q-band and closed cycle cryostat upgrades would open up new research perspectives. We envisage that the requested acquisition will be particularly valuable for research at the TUK within the SFB/TRR173 SPIN+X, the SFB/TRR88 3MET and the collaborations within SPP1927, as well as in future research programs.

电子顺磁共振 (EPR) 波谱是表征含铁硫金属蛋白、顺磁无机复合物和有机自由基系统的性质、结构、功能和机制的首选方法。在这份重大研究仪器拨款申请中，凯泽斯劳滕技术大学 (TUK) 化学、物理以及机械与过程工程系的七个小组描述了他们当前和未来的研究。对于这七个小组以及其他本地用户和我们的外部合作者来说，更新已有 20 年历史的 X 波段 EPR 光谱仪至关重要。由于其使用年限，该仪器经常出现故障，更换零件的可用性也变得非常成问题。此外，Q带设施的升级将能够解释自旋耦合生物系统和（高自旋）无机复合物的高度复杂的光谱。此外，闭式循环低温恒温器的更新将确保随时获得液氦温度下的测量结果。特别是在液氦供应瓶颈日益频繁的时期，较低的氦消耗和液氦输送的独立性将非常有利。此次更新将保证我们基于 EPR 的研究活动的继续，Q 波段和闭循环低温恒温器的升级将开辟新的研究视角。我们预计，所请求的收购对于 TUK 在 SFB/TRR173 SPIN+X、SFB/TRR88 3MET 内的研究以及 SPP1927 内的合作以及未来的研究项目特别有价值。