一个有机金属三明治胺单离子磁铁,具有不寻常的多重放松机制
Matthew Jeletic1, Po-Heng Lin, Jennifer J Le Roy
1Chemistry Department and the Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, Canada K1N 6N5.
Journal of the American Chemical Society
|October 29, 2011
概括
合成了一种新的dysprosium (III) 三明治复合物,并证明了单离子磁铁的行为. 它的磁放松路径显示了不寻常的多种模式,高度依赖于应用的静态直流场.
科学领域:
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
- 磁力学 磁力学 是一种
背景情况:
- 单离子磁铁 (SIM) 对于开发分子磁性材料至关重要.
- 双 (Dysprosium) 复合物提供了高磁性异性质的潜力.
- 控制SIM中的放松动态是应用程序的关键.
研究的目的:
- 为了合成和表征一种新的dysprosium ((III) 三明治复合体.
- 为了研究磁性特性,特别是单离子磁铁的行为.
- 探索放松动态及其对外部磁场的依赖.
主要方法:
- 使用1,4-bis ((trimethylsilyl) cyclooctatetraenyl dianion (COT") 合成双 (III) 三明治复合物[Dy ((III) ((COT")) ]使用1,4-bis ((trimethylsilyl) 环氧三甲 (THF) ((DME)).
- 测量磁感应度的测量.
- 在变化的静态直流 (dc) 场下,放松动态的分析.
主要成果:
- 成功合成了dysprosium(III) 的三明治复合物.
- 该综合体表现出单离子磁铁行为.
- 观察到不寻常的多重磁放松模式.
- 发现放松路径严重依赖于应用的静态直流电场.
结论:
- 合成的dysprosium (III) 复合物是一种有前途的单离子磁体.
- 综合体显示了由外部场所影响的复杂的放松动态.
- 需要进一步研究兰坦化SIM中的场依赖放松.
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