Switching of the Magnetocaloric Effect of MnII Glycolate by Water Molecules

被引：65

作者：

Chen, Yan-Cong ^{[1
]}

Guo, Fu-Sheng ^{[1
]}

Liu, Jun-Liang ^{[1
]}

Leng, Ji-Dong ^{[1
]}

Vrabel, Peter ^{[2
,3
]}

Orendac, Martin ^{[2
,3
]}

Prokleska, Jan ^{[4
]}

Sechovsky, Vladimir ^{[4
]}

Tong, Ming-Liang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Key Lab Bioinorgan & Synthet Chem,Minist Educ, Guangzhou 510275, Guangdong, Peoples R China

[2] Safarik Univ, Ctr Low Temp Phys, Fac Sci, Kosice 04154, Slovakia

[3] SAS, Inst Expt Phys, Kosice 04154, Slovakia

[4] Charles Univ Prague, Dept Condensed Matter Phys, Fac Math & Phys, CZ-12116 Prague 2, Czech Republic

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2014年 / 20卷 / 11期

关键词：

coordination polymers; glycolates; magnetic properties; magnetocaloric effect; manganese; ENHANCED MAGNETIC COOLERS; METAL-ORGANIC FRAMEWORK; LOW-TEMPERATURE; CLUSTERS; REFRIGERATION; GD; LN; PICOLINALDEHYDE; NANOMAGNETS; RELAXATION;

D O I：

10.1002/chem.201304423

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The transformation of Mn-II glycolates (glc) between the three-dimensional coordination polymer [Mn(glc)(2)](n) (1) and discrete mononuclear phase [Mn(glc)(2)(H2O)(2)] (2) can be reversibly switched by water molecules, which dramatically change the magnetocaloric effect (MCE) of Mn-II glycolates from the maximum of 6.9Jkg(-1)K(-1) in 1 to 60.3Jkg(-1)K(-1) in 2. This case example reveals that the effect of magnetic coupling on MCE plays a dominant role over that of other factors such as magnetic density for 3d-type magnetic refrigerants.

引用

页码：3029 / 3035

页数：7

共 61 条

[1] Low temperature specific heat of molecular rings: a study on the effects of the internal guest substitution and on the lattice contribution [J].