MRI: Acquisition of an Electron Paramagnetic Resonance (EPR) Spectrometer for Research and Education in Chemistry and Physics

MRI：购买电子顺磁共振 (EPR) 能谱仪，用于化学和物理的研究和教育

• 批准号: 1228325
• 负责人: Luis Echegoyen
• 金额: $ 22.5万
• 依托单位: University of Texas at El Paso
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1228325&HistoricalAwards=false
• 关键词: MRI; Acquisition; Electron; Paramagnetic; Resonance

With this award from the Major Research Instrumentation (MRI) program, Professor Luis Echegoyen from the University of Texas El Paso and colleagues Juan Noveron, Michael Eastman, Cristian Botez and Dino Villagran will acquire an electron paramagnetic resonance (EPR) spectrometer. The proposal is aimed at enhancing research training and education at all levels, especially in areas such as (a) synthesis of and sampling the highest occupied and the lowest unoccupied molecular orbitals (HOMO and LUMO) of endohedral metallofullerenes (EMFs) and their derivatives; (b) parallel proton-coupled electron transfer (PCET) with dimolybdenum bimetallic units; (c) understanding the electronic structure of Ru2(5+) dimers; (d) coordination chemistry of paramagnetic centers in metal-organic supramolecular nanomaterials; (e) cyanide polymers; and (f) magnetic behavior of metal oxide nanoparticle ensembles.EPR spectrometers detect electrons, more specifically, the energy necessary to excite an electron to a higher quantized energy state. This occurs when the spectrometer provides the energy necessary to flip the spin of an unpaired electron in the presence of an applied magnetic field. This information provides insight into the electronic structure and bonding of the material being studied, which can be utilized to understand its properties and how it might be used or improved. This spectrometer will provide faculty and research students with modern instrumentation not currently available at the institution advancing their research projects significantly. It will be used in an undergraduate laboratory course providing training in this analytical technique to large numbers of Hispanic-American students at an institution with a 78% undergraduate student body of Hispanic origin.

有了这项来自主要研究仪器（MRI）计划的奖项，德克萨斯大学埃尔帕索分校的Luis Echegoyen教授及其同事Juan Noveron，Michael Eastman，Cristian Botez和Dino比利亚格兰将获得电子顺磁共振（EPR）光谱仪。该建议旨在加强各级的研究、培训和教育，特别是在以下领域：（a）合成最高占有和最低未占有分子轨道并对其进行取样（B）含钼富勒烯单元的平行质子耦合电子转移（PCET）;（c）了解Ru 2（5+）二聚体的电子结构;（d）金属有机超分子纳米材料中顺磁中心的配位化学;（e）氰化物聚合物;和（f）金属氧化物纳米颗粒集合的磁性行为。EPR光谱仪检测电子，更具体地说，将电子激发到更高的量子化能态所需的能量。 当光谱仪提供在外加磁场存在下翻转未成对电子自旋所需的能量时，就会发生这种情况。 这些信息提供了对所研究材料的电子结构和键合的深入了解，可用于了解其特性以及如何使用或改进。 该光谱仪将为教师和研究生提供该机构目前无法提供的现代仪器，从而显着推进他们的研究项目。它将被用于本科实验室课程，提供培训，在这种分析技术，以大量的西班牙裔美国学生在一个机构与78%的西班牙裔本科学生的身体。