Developing Magnetic, Optical and Catalytic Applications of Metallacrowns

在化学系化学结构与动力学机制B项目资助的项目中，Vincent L.密歇根大学化学系的Pecoraro将开发新型金属络合物，称为金属冠（含有镧系元素，过渡金属和碱土金属离子），具有有趣的磁性，发光和催化性能。本研究的目的是利用这些金属冠醚的特性，使配合物，将减少所需的磁性存储信息的体积，可用于在体内和体外发光剂的化学和生物样品的成像，并准备新的多金属催化剂的精细化学品合成。这项工作已被用于实验室本科课程的发展，可能会从事本科生和可能的高中学生的参与。此外，这项工作是作为一个例子，创造性的奖学金在本科课程在这个问题上，在密歇根大学。金属冠（MC）是metallamacrocycles，因为他们的结构的多功能性和金属丰富的拓扑结构已经获得了相当大的关注。特别令人感兴趣的是含有过渡金属离子和镧系元素（Ln 3+）离子的大量3d-4f异金属MC。该提案的主要目标是开发这种类型的MC在1）分子识别和催化，2）用于发光和非线性光学（NLO）的光学材料和3）分子磁性方面的应用潜力。在这项工作中产生的材料有很大的潜力，找到商业用途。基质特异性催化材料有潜力改善化学工业中的合成过程，而磁性材料的MC研究有潜力彻底改变数据存储并增强对磁性现象的理解。基于含有Zn（II）或Ga（III）和Ln 3+离子的MC的发光体对于近红外生物成像和远程光纤通信特别有前途，而作为NLO固体的应用也是有前途的。

In this project funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Vincent L. Pecoraro of the Department of Chemistry at the University of Michigan will develop new classes of metal complexes known as metallacrowns (containing lanthanides, transition and alkali earth metal ions) with interesting magnetic, luminescent and catalytic properties. The goal of this research is to exploit the characteristics of these metallacrowns to make complexes that will reduce the volume necessary to store information magnetically, that may be used as in vivo and in vitro luminescent agents for the imaging of chemical and biological samples and to prepare new multimetallic catalysts for fine chemicals synthesis. This work has been used for the development of laboratory undergraduate courses and likely will engage both undergraduate and possibly high school student participation. Also, this work is used as an example of creativity in scholarship in an undergraduate course on this subject at the University of Michigan.Metallacrowns (MC) are metallamacrocycles that have since garnered considerable attention for their structural versatility and metal-rich topology. Of particular interest is a vast series of 3d-4f heterometallic MCs that contain a transition metal ion and a lanthanide (Ln3+)ion. The main objectives of this proposal are to exploit the potential of this type of MC for applications in 1) molecular recognition and catalysis, 2) optical materials for luminescence and non-linear optics (NLO) and 3) molecular magnetism. Materials produced in this work have great potential to find commercial use. Substrate specific catalytic materials have potential to improve synthetic processes in the chemical industry, while MC research on magnetic materials has the potential to revolutionize data storage and enhance the understanding of magnetic phenomena. Lumiphores based on MCs containing Zn(II) or Ga(III) and Ln3+ ions are particularly promising for near-IR biological imaging and long range fiber optic telecommunications while application as NLO solids are also promising.