Significant increase of the barrier energy for magnetization reversal of a single-4f-ionic single-molecule magnet by a longitudinal contraction of the coordination space.
Significant increase of the barrier energy for magnetization reversal of a single-4f-ionic single-molecule magnet by a longitudinal contraction of the coordination space.
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DOI：
10.1021/ic700954t
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发表时间：
2007-08
影响因子：
4.6
通讯作者：
S. Takamatsu;T. Ishikawa;S. Koshihara;N. Ishikawa
中科院分区：
文献类型：
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作者：
S. Takamatsu;T. Ishikawa;S. Koshihara;N. Ishikawa
[{Pc(OEt)8}2TbIII]- [Pc(OEt)8= 2,3,9,10,16,17,23,24-辛氧基酞菁]的双电子氧化导致单-4f离子单分子磁体（SMM）的配位空间纵向收缩，导致磁化反转势垒能显著增加，chi”峰温度显著升高，chi’t下降。这是第一个证明4f smm的动态磁性可以通过配体侧的氧化还原反应来控制，而无需引入任何额外的磁性位点或自旋系统。
Two-electron oxidation of [{Pc(OEt)8}2TbIII]- [Pc(OEt)8=dianion of 2,3,9,10,16,17,23,24-octaethoxyphthalocyanine], which leads to a longitudinal contraction of the coordination space of the single-4f-ionic single-molecule magnet (SMM), resulted in a significant increase of the magnetization-reversal barrier energy and a remarkable upward temperature shift of chi'' peaks and chi'T drops. This is the first evidence that the dynamic magnetism of 4f SMMs can be controlled by a redox reaction on the ligand side without introducing any additional magnetic site or spin system.