磁热效应材料在现代低温工程及国防工业有着举足轻重的作用。磁热效应金属有机框架材料因其结构易于调控，热稳定高和化学稳定性好，成为了新的研究热点。而磁热效应锰及其混金属基有机框架材料除了具有上述特征外，还具有其它含钆磁热效应材料无法比拟的更经济实惠的优点。本项目旨在设计合成无钆大磁热效应、高热稳定性、好化学稳定性和经济实惠的锰及锰-碱金属/碱土金属混金属有机框架材料。通过对配体桥联模式的调控及异金属的引入，考察金属之间磁传递的途径、非磁性金属对磁热效应等性质的影响，进而研究其构效关系。本项目的实施将拓展低温磁热效应材料的类型，加深人们对低温磁热材料结构和性能构效关系的了解，为寻找有实际应用价值的低温磁热效应材料做出一定的贡献。

Magnetocaloric effect (MCE) materials have a pivotal role in modern cryogenic engineering and defense industry. MCE Metal-organic framework materials (MOFs) become a new research hotspot, due to their tunable structures, high thermal stability and good chemical stability. Additionally, they are more economical and practical than other Gd-based MCE materials. The aim of this project is to design and synthesis large MCE MOFs materials based on manganese and those mixed with other metals such as alkali or alkaline earth metals with high thermal stability and good chemical stability. The effect of nonmagnetic metals and the magnetic pathway mediated by different bridging mode of the organic ligands between the metal ions on the MCE will be also investigated. This work is helpful for understanding the structure-MCE relationship of these materials and make some contributions for seeking new low-temperature MCE materials with potential application.