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RUI: Switchable Molecules and Materials Through Coordination of Verdazyl Radicals

RUI：通过 Verdazyl 自由基的协调可切换分子和材料

基本信息

批准号：
1900491
负责人：
David Brook
金额：
$ 31万
依托单位：
San Jose State University Foundation
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-07-01 至 2024-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1900491&HistoricalAwards=false
关键词：
RUI Switchable Molecules Materials Through

项目摘要

In this Research at Undergraduate Institution (RUI) project funded by the Chemical Structure, Dynamics and Mechanisms-B program of the Chemistry Division, Professor David Brook of the Department of Chemistry at San Jose State University is studying a series of transition metal-containing molecules and materials with switchable magnetic structures. By switching between different magnetic states as a result of external influences such as temperature, light and electrical potential, these molecules and materials may have applications as sensors, and in information storage and molecular computing. High school students, undergraduate students, and master's level graduate students will play a role in the research. They will gain broad experience in experimental chemistry, from organic and inorganic synthesis to the use of numerous analytical techniques including spectroscopy, mass spectrometry, electrochemistry, magnetochemistry, and X-ray crystallography. Students will participate in national and international research collaborations and will have the opportunity to make measurements at major user facilities in the US and Spain.Transition metal and f-block element coordination compounds of verdazyl radical ligands have the potential to form molecules with labile electronic structures (i.e. the molecule can switch between electronic states that differ in magnetic or other properties). The research involves the exploration and exploitation of this unusual property with several goals in mind. The first goals it o understand the factors in the metal-ligand interaction that give rise to electronic lability, while the second goals is to electronically couple labile ions with conducting counterions to form new materials with novel magnetoresistive behavior. The team will study verdazyl complexes of f block elements (both lanthanides and actinides) in order to develop new single molecule magnets and using principles of self assembly to synthesize and study extended clusters of electronically labile metal centers, exploring the interactions between neighboring metal ions.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.

在这项由化学系化学结构、动力学和机制B项目资助的本科生研究所(RUI)项目中，圣何塞州立大学化学系的David Brook教授正在研究一系列具有可切换磁性结构的过渡金属分子和材料。通过在温度、光和电势等外部影响下在不同的磁性状态之间切换，这些分子和材料可能会作为传感器以及在信息存储和分子计算中的应用。高中生、本科生和硕士研究生将在研究中发挥作用。他们将在实验化学方面获得广泛的经验，从有机和无机合成到大量分析技术的使用，包括光谱、质谱学、电化学、磁化学和X射线结晶学。学生将参与国内和国际研究合作，并有机会在美国和西班牙的主要用户设施进行测量。绿豆根基配体的过渡金属和f-块元素配位化合物有可能形成具有不稳定电子结构的分子(即分子可以在不同的磁性或其他性质的电子态之间切换)。这项研究涉及到对这一不同寻常的财产的勘探和开发，考虑到了几个目标。第一个目标是了解金属-配体相互作用中引起电子不稳定性的因素，第二个目标是将不稳定的离子与导电反离子进行电子耦合，形成具有新的磁阻行为的新材料。该团队将研究f块元素(包括镧系元素和吖系元素)的绿豆素络合物，以开发新的单分子磁体，并利用自组装原理合成和研究扩展的电子不稳定金属中心簇，探索邻近金属离子之间的相互作用。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。