| Literature DB >> 28719109 |
Xiu-Ying Zheng1, Hui Zhang1, Zhenxing Wang2, Pengxin Liu1, Ming-Hao Du1, Ying-Zi Han1, Rong-Jia Wei1, Zhong-Wen Ouyang2, Xiang-Jian Kong1, Gui-Lin Zhuang3, La-Sheng Long1, Lan-Sun Zheng1.
Abstract
The largest Ln-Fe metal cluster [Gd12 Fe14 (μ3 -OH)12 (μ4 -OH)6 (μ4 -O)12 (TEOA)6 (CH3 COO)16 (H2 O)8 ]⋅(CH3 COO)2 (CH3 CN)2 ⋅(H2 O)20 (1) and the core-shell monodisperse metal cluster of 1 a@SiO2 (1 a=[Gd12 Fe14 (μ3 -OH)12 (μ4 -OH)6 (μ4 -O)12 (TEOA)6 (CH3 COO)16 (H2 O)8 ]2+ ) were prepared. Experimental and theoretical studies on the magnetic properties of 1 and 1 a@SiO2 reveal that encapsulation of one cluster into one silica nanosphere not only effectively decreases intermolecular magnetic interactions but also significantly increases the zero-field splitting effect of the outer layer Fe3+ ions.Entities:
Keywords: lanthanides; magnetic interactions; monodispersity; silica nanospheres; transition-metal clusters
Year: 2017 PMID： 28719109 DOI： 10.1002/anie.201705697
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336