MRI: Acquisition of an EPR Spectrometer for Research and Education

在主要研究仪器项目（MRI）的奖励和化学研究仪器项目（CRIF）的支持下，来自加州州立大学北桥分校的Miroslav Peric教授及其同事Radha Ranganathan和Jussi Eloranta获得了一台x波段电子顺磁共振（EPR）光谱仪。该仪器将允许在各种领域进行研究，例如那些提供有关生物物种行为的见解以及推进环境研究的领域。一般来说，EPR光谱仪产生分子和固态材料的几何和电子结构的详细信息。它还用于获取自由基的寿命信息，这些自由基是参与有价值的化学转化以及病理性肿瘤生长起始的短命、高活性物种。这些研究影响了许多领域，从无机和有机分子的合成到新型固态材料的开发，再到具有磁性和生物学意义的化合物。该仪器从正在进行的研究中获得灵感，是加州州立大学北岭分校研究和教学中不可或缺的一部分。该仪器为学生提供了出色的现代仪器实践经验。该奖项旨在加强各级的研究和教育，特别是在研究(a)自旋氮氧化物探针在蛋白质-磷脂聚集体和离子液体中的平移和旋转扩散等领域；(b)废水处理中自由基中间体的机理和动力学研究；(c)分子聚集体的物理化学特征；(d)富电子芳香族和二烯与贫电子咪唑类化合物的相互作用；(e)低粘度液体中的双分子碰撞和(f)过冷水中的溶质跳跃扩散。

With this award from the Major Research Instrumentation Program (MRI) and support from the Chemistry Research Instrumentation Program (CRIF), Professor Miroslav Peric from California State University Northridge and colleagues Radha Ranganathan and Jussi Eloranta have acquired an X-band electron paramagnetic resonance (EPR) spectrometer. This instrument will allow research in a variety of fields such as those that provide insight on how biologically relevant species behave as well as advance environmental studies. In general, an EPR spectrometer yields detailed information on the geometric and electronic structure of molecular and solid state materials. It is also used to obtain information about the lifetimes of free radicals, short-lived, highly reactive species involved in valuable chemical transformations as well as the initiation of pathological tumor growth. These studies impact a number of areas, from the synthesis of inorganic and organic molecules to the development of new solid state materials to compounds of magnetic and biological interest. Employing examples inspired from ongoing research, this instrument is an integral part of research and teaching at California State University Northridge. The instrument provides students with outstanding practical experience in modern instrumentation.The award is aimed at enhancing research and education at all levels, especially in areas such as studying (a) translational and rotational diffusion of spin nitroxide probes in protein-phospholipid aggregates and ionic liquids; (b) mechanistic and kinetic studies of radical intermediates in wastewater treatment; (c) physicochemical characterization of molecular aggregates; (d) electron rich aromatic and diene interactions with electron-poor imidazolium compounds; (e) bimolecular collisions in low-viscosity liquids and (f) solute jump diffusion in supercooled water.