单分散稀土-过渡金属簇合物的合成及磁性

单分散金属簇合物为理解分子磁体中的磁交换作用提供了独特的平台。在本申请课题中，申请人拟通过将稀土-过渡金属簇合物包合于二氧化硅纳米球中，制备出一系列单分散稀土-过渡金属簇合物。利用电镜、小角散射、原子吸收光谱等手段对单分散稀土-过渡金属簇合物进行表征。分别测定稀土-过渡金属簇合物及单分散稀土-过渡金属簇合物的磁性，并对其磁性进行拟合。从而获得稀土-过渡金属簇合物及单分散稀土-过渡金属簇合物中的金属离子间的磁交换常数，揭示簇合物中磁交换作用的构效关系。因此，课题的开展将极大帮助人们理解稀土-过渡金属簇合物中的磁相互作用。

Monodisperse metal clusters provide a unique platform for investigating magnetic exchange within molecule magnets. In this project, a series of core-shell structure of the monodisperse molecule magnet of lanthanide-transition metal clusters will be prepared by encapsulating one lanthanide-transition metal cluster into one silica nanosphere through a facile one-pot microemulsion method. The monodisperse metal clusters are characterized using transmission electron microscopy, N2 adsorption-desorption isotherms and inductively coupled plasma-atomic emission spectrometry respectively. Magnetic properties of the lanthanide-transition metal clusters and the monodisperse metal clusters are investigated experimentally and theoretically, revealing the relationship between the magnetic coupling constants in the metal clusters and the structures of the clusters. Thus, present project will be great helpful for our underdtanding of the magnetic interactions in lanthanide-transition metal clusters.