Magnetic Properties of a Single-Molecule Lanthanide-Transition-Metal Compound Containing 52 Gadolinium and 56 Nickel Atoms

被引：68

作者：

Liu, Da-Peng ^{[1
,2
]}

Lin, Xin-Ping ^{[1
,2
]}

Zhang, Hui ^{[1
,2
]}

Zheng, Xiu-Ying ^{[1
,2
]}

Zhuang, Gui-Lin ^{[3
]}

Kong, Xiang-Jian ^{[1
,2
]}

Long, La-Sheng ^{[1
,2
]}

Zheng, Lan-Sun ^{[1
,2
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China

[3] Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310032, Zhejiang, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 14期

基金：

中国国家自然科学基金;

关键词：

core-shell nanoparticles; lanthanide-transition-metal compounds; magnetic properties; silica; single molecules; 3D-4F CLUSTERS; PD CLUSTERS; NANOPARTICLES; NANOMAGNETS; COBALT; BULK; LN;

D O I：

10.1002/anie.201601199

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monodisperse metal clusters provide a unique platform for investigating magnetic exchange within molecular magnets. Herein, the core-shell structure of the monodisperse molecule magnet of [Gd52Ni56(IDA)(48)(OH)(154)(H2O)(38)]@SiO2 (1a@SiO2) was prepared by encapsulating one high-nuclearity lanthanide-transition-metal compound of [Gd52Ni56(IDA)(48)(OH)(154)(H2O)(38)](NO3)(18)164H(2)O (1) (IDA=iminodiacetate) into one silica nanosphere through a facile one-pot microemulsion method. 1a@SiO2 was characterized using transmission electron microscopy, N-2 adsorption-desorption isotherms, and inductively coupled plasma-atomic emission spectrometry. Magnetic investigation of 1 and 1a revealed J(1)=0.25cm(-1), J(2)=-0.060cm(-1), J(3)=-0.22cm(-1), J(4)=-8.63cm(-1), g=1.95, and zJ=-2.0x10(-3)cm(-1) for 1, and J(1)=0.26cm(-1), J(2)=-0.065cm(-1), J(3)=-0.23cm(-1), J(4)=-8.40cm(-1)g=1.99, and zJ=0.000cm(-1) for 1a@SiO2. The zJ=0 in 1a@SiO2 suggests that weak antiferromagnetic coupling between the compounds is shielded by silica nanospheres.

引用

页码：4532 / 4536

页数：5

共 61 条

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