A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand

A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand
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基于罗丹明 6G 配体的 Dy(III) 荧光单分子磁体

DOI:
10.3390/inorganics9070051
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发表时间:
2021-06
期刊:
影响因子:
2.9
通讯作者:
Kou Hui-Zhong
Kou Hui-Zhong
中科院分区:
化学3区
文献类型:
--
作者:
Miao Lin;Liu Mei-Jiao;Ding Man-Man;Zhang Yi-Quan;Kou Hui-Zhong

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镧系金属尤其是镝的配合物通常可以表现出优异的磁性能。通过修饰配体,可以实现双功能甚至多功能。在这里,我们合成了八配位Dy(III)配合物1,[Dy(HL-o)2(MeOH)2](ClO4)3·4.5MeOH,它是单分子磁体(SMM),并且在开环配体HL-o中引入罗丹明6G发色团,除了SMM之外还实现了配体中心荧光。磁测量和从头计算表明,配合物 1 的磁弛豫应归因于拉曼弛豫过程。对罗丹明水杨醛腙Dy(III)配合物磁结构相关性的研究表明,第一Kramers Doublet (EKD1)的计算能量基本上与Ophenoxy-Dy-Ophenoxy键角相关,即较大的Ophenoxy-Dy-Ophenoxy键角对应较大的EKD1。
The complexes of lanthanide metals, especially dysprosium, can generally exhibit excellent magnetic properties. By means of modifying ligands, dual functions or even multi-functions can be achieved. Here, we synthesized an eight-coordinate Dy(III) complex 1, [Dy(HL-o)2(MeOH)2](ClO4)3·4.5MeOH, which is single-molecule magnet (SMM), and the introduction of the rhodamine 6G chromophore in the ring-opened ligand HL-o realizes ligand-centered fluorescence in addition to SMM. Magnetic measurements and ab initio calculations indicate that the magnetic relaxation for complex 1 should be due to the Raman relaxation process. Studies on magneto-structural correlationship of the rhodamine salicylaldehyde hydrazone Dy(III) complexes show that the calculated energy of the first Kramers Doublet (EKD1) is basically related to the Ophenoxy-Dy-Ophenoxy bond angle, i.e., the larger Ophenoxy-Dy-Ophenoxy bond angle corresponds to a larger EKD1.
具有不同配位几何形状的六配位 Ln(III) 配合物表现出独特的磁性
DOI: 10.3390/inorganics6010016
发表时间: 2018-03-01
期刊: INORGANICS
影响因子: 2.9
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通讯作者: Tang, Jinkui
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发表时间: 2001-04-12
期刊: NATURE
影响因子: 64.8
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