MRI: Acquisition of a Continuous-wave Electron-paramagnetic Resonance Spectrometer for Research and Education

MRI：购买连续波电子顺磁共振波谱仪用于研究和教育

• 批准号: 2117480
• 负责人: Paula Diaconescu
• 金额: $ 29.26万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117480&HistoricalAwards=false
• 关键词: MRI; Acquisition; Continuous; wave; Electron

This award is supported by the Major Research Instrumentation and the Chemistry Research Instrumentation programs. The University of California Los Angeles is acquiring a continuous wave electron paramagnetic resonance (CW-EPR) spectrometer to support research of Professor Paula Diaconescu and colleagues Greg Carman, Miguel Garcia-Garibay, Sarah Tolbert and Chong Liu. This instrument allows research in a variety of fields such as those that provide insight on how biologically relevant species with unpaired electrons behave. 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 possible pathological growth. This instrument is an integral part of teaching as well as research and research training of undergraduate and graduate students in chemistry and biochemistry at this institution as well as collaborators from regional institutions such as those in the Cal State System as well as nearby minority serving institutions.The award of the EPR spectrometer is aimed at enhancing research and education at all levels. It especially impacts the characterization of pre-catalysts with unpaired electrons, mixed valence metal complexes, and paramagnetic lanthanide complexes used to prepare optically active molecular spin qubits and the study of rotational dynamics of different magnetic organic frameworks with stable nitroxyl radicals. The instrumentation is also used to search for materials for multiferroic antennas and for the rapid screening of magnetic loss in new dynamic magnetoelastic materials. In addition, it allows the characterization of doped semiconducting polymers and studies of boron-based stable radical species. The instrument also serves researchers designing rules and understanding the effect of 3-dimensional aromatic radicals on how their electronic properties can be rationally tuned and deliberately manipulated and to understand catalytic methane air oxidation to methanol by reactive oxygen.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项由主要研究仪器项目和化学研究仪器项目支持。加州大学洛杉矶分校正在获取一台连续波电子顺磁共振(CW-EPR)光谱仪，以支持Paula Diaconescu教授及其同事Greg Carman、Miguel Garcia-Garibay、Sarah Tolbert和Chong Liu的研究。该仪器允许在各种领域进行研究，例如那些提供对具有未配对电子的生物相关物种如何行为的洞察。一般来说，EPR光谱仪可以提供有关分子和固态材料的几何和电子结构的详细信息。它还被用来获得有关自由基寿命的信息，自由基是参与有价值的化学转化的短暂、高活性物种，以及可能的病理生长的启动。这台仪器是该机构化学和生物化学的本科生和研究生以及加州州立系统和附近少数民族服务机构等地区机构的合作者的教学、研究和研究培训的组成部分。授予EPR光谱仪的目的是加强各级研究和教育。特别是对用于制备光学活性分子自旋量子比特的未配对电子预催化剂、混合价金属络合物和顺磁性稀土络合物的表征以及具有稳定氮氧自由基的不同磁性有机骨架的转动动力学的研究产生了特别的影响。该仪器还用于寻找多铁性天线的材料和快速筛选新的动态磁弹性材料中的磁损耗。此外，它还允许对掺杂半导体聚合物的表征和对基于硼的稳定自由基物种的研究。该仪器还为研究人员设计规则和了解三维芳香族自由基对其电子性质如何合理调整和刻意操纵的影响以及了解催化甲烷空气氧化反应氧制甲醇提供服务。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。