应用化学2017，Vol.34Issue(9)：1086-1092,7.DOI:10.11944/j.issn.1000-0518.2017.09.170176
稀土簇基金属有机框架的合成、结构及磁学性质
Synthesis, Structure, Magnetic Properties of Lanthanide Cluster-Based Metal-Organic Frameworks
摘要
Abstract
Two lanthanide cluster-based metal-organic frameworks of {[Gd7(OH)8(HOCH2COO)8(H2O)3]·Cl5·3H2O}n(Ln=Gd(1), Dy(2)) were obtained by solvothermal reaction.The magnetic studies indicate that compound 1 exhibits a large magnetocalotic effect(MCE) values of 44.4 J/(kg·K) at 2 K and ΔH=7 T and compound 2 displays obvious frequency dependence(Hdc=0) which suggests that compound 2 shows slow relaxation.In addition, the results of powder diffraction reveals that compounds 1 and 2 display very high chemical stability, which can be stable in acid/base solution of pH=1~14 and boiling water.These results indicate that the lanthanide cluster-based metal-organic frameworks have the potential application in the low-temperature refrigeration.关键词
稀土金属有机框架/磁热效应/频率依赖性/化学稳定性Key words
lanthanide organic-metal frameworks/magnetocalotic effect/frequency dependence/chemical stability分类
化学化工引用本文复制引用
郑秀英,孔祥建,龙腊生,郑兰荪..稀土簇基金属有机框架的合成、结构及磁学性质[J].应用化学,2017,34(9):1086-1092,7.基金项目
国家自然科学基金(21422106,21371144,21431005)资助项目Supported by the National Natural Science Foundation of China(No.21422106, No.21371144, No.21431005) （21422106,21371144,21431005）
