稀土分子磁体的精准组装及其多功能响应性研究----从功能贵金属团簇出发

全球大数据产业爆发，信息存储器和量子计算机对磁性材料的需求日益凸显。单分子磁体摆脱传统磁体量子尺寸效应的限制成为优选材料。随着磁性能不断提升，如何解决稳定高性能分子磁体功能单一性的问题是扩大磁性材料应用窗口的重要环节。利用金属有机配体对稀土的敏化荧光特性，申请人获得多例发光稀土单分子磁体也面临诸多挑战：1）如何继续深挖金属有机发色团的敏化效果，提升分子磁体光功能；2）如何赋予稳定高性能稀土分子磁体光电功能；3）如何明晰多功能分子磁体光电功能的影响机制，开发磁体在光电能源领域的应用潜力。因此，本项目提出：“从功能贵金属团簇出发”精准组装多功能稀土分子磁体的策略。一方面，利用后合成修饰或配体置换方法将团簇“官能团化”，再通过活性配位点与磁性稀土基团“点对点”组装稀土分子磁体；另一方面，将团簇的光电特性传递给整个磁体，探究团簇对产物磁光电性能的影响机制，为多功能分子磁性材料的发展提供重要参考。

Per the explosion of big data industry, the demand of magnetic materials for data storage devices and quantum computers has become increasingly prominent. Single-molecule magnets (SMMs) are of preferred materials which could break away quantum size effect of traditional bulk magnets. With the continuous improvement of magnetic properties, how to solve the problem of single function of the stable and high-performance SMMs is an important point to expand the application window of magnetic materials. We isolated several luminescent lanthanide SMMs relying on the sensitization characteristics of organometallic ligands, but there were still challenges. 1) How to further explore the sensitization effect of organometallic chromophores, and improve the optical function of SMMs. 2) How to endow photoelectric properties to stable and high-performance lanthanide SMMs. 3) How to clarify the influence mechanism of the photoelectric function of multifunctional SMMs, and develop the application potential of magnets in the field of photoelectric energy. Therefore, this project proposes the strategy of “starting from functional noble metal clusters” to assemble multifunctional lanthanide SMMs precisely. On the one hand, the clusters are “functionalized” by post-synthesis modification or ligand exchange, and then are assembled “point-to-point” with magnetic lanthanide groups by active coordination sites. On the other hand, the photoelectric properties of clusters are transferred to target magnets, and the influence mechanism of clusters on the magneto-photoelectric properties is explored, which provides an important reference for the development of multifunctional molecular magnetic materials.