Lanthanide-based ionic liquids: Novel soft materials with luminescent and magnetic properties

镧系离子液体：具有发光和磁性的新型软材料

• 批准号: 1465071
• 负责人: Gerd Meyer
• 金额: $ 39万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1465071&HistoricalAwards=false
• 关键词: Lanthanide; based; ionic; liquids; Novel

In this project funded by the Chemical Synthesis program of the Chemistry Division, Professor Anja-Verena Mudring of Iowa State University aims to enhance optical and magnetic properties of rare earths to reduce the level of lanthanides required to obtain these functional materials. Rare earths belong to the group of critical elements that are vital for many every day electronics, such as cell phones; green energy technologies, including wind turbines and hybrid cars. Therefore, the use of rare earth compounds constitutes an important strategic and dynamic segment of the electronic, chemical, and energy industries. However, reduced efforts to explore and mine rare earths in the western world in recent years has led to a dependency on international sources, and availability of a number of these elements is limited, in general. Thus, there is a need for new scientific understanding and expanded research capabilities on rare earth chemistry. Divalent and trivalent rare earth elements are incorporated in the cation or anion of ionic liquids (ILs). The product purity and identity are determined by a variety of spectroscopic, chemical, and crystallographic techniques. The purpose is to explore the chemistry of rare earth elements in ILs with the goal of using ILs to enhance and control the luminescent and magnetic properties of the rare earth ions and to stabilize rare earths in uncommon oxidation states. The research program aims to develop the chemistry (and physics) of rare earths in totally ionic media, at room temperature and below, which is otherwise not available in conventional solvents. The ILs are used as low-phonon environments and light harvesters to improve the luminescent properties of the rare earth, develop new magnetorheological fluids based on complex rare earth ions with high magnetic moments, and stabilize unusual oxidation states of the rare earths. This project involves a team oriented approach which will provide a fundamental research experience to undergraduates, graduates, and postdoctoral students. These students have the opportunity to work directly with academic and industrial partners and with business students. A special effort will be made to include women and members of traditionally underrepresented groups in this research.

在这个由化学系化学合成项目资助的项目中，爱荷华州立大学的Anja-Verena Mudring教授旨在提高稀土的光学和磁性能，以减少获得这些功能材料所需的镧系元素水平。稀土属于对手机等许多日常电子产品至关重要的一组关键元素；绿色能源技术，包括风力涡轮机和混合动力汽车。因此，稀土化合物的使用构成了电子、化学和能源工业的重要战略和动态部分。然而，近年来西方国家在勘探和开采稀土方面的努力有所减少，导致了对国际资源的依赖，而这些元素中的许多元素的供应总体上是有限的。因此，有必要对稀土化学进行新的科学认识和扩大研究能力。二价和三价稀土元素被掺入离子液体（ILs）的正离子或阴离子中。产品的纯度和身份是由各种光谱，化学和晶体技术确定的。目的是探索稀土元素在il中的化学性质，目的是利用il增强和控制稀土离子的发光和磁性能，稳定稀土在不常见的氧化态。该研究计划的目的是在室温及以下的全离子介质中开发稀土的化学（和物理），否则在传统溶剂中是无法获得的。利用离子阱作为低声子环境和光收集器，改善稀土的发光性能，开发基于高磁矩复配稀土离子的新型磁流变液，稳定稀土的异常氧化态。该项目采用以团队为导向的方法，为本科生、研究生和博士后提供基础研究经验。这些学生有机会直接与学术和工业合作伙伴以及商业学生一起工作。将特别努力使妇女和传统上代表性不足的群体成员参与这项研究。