A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand
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 <b>1</b>, [Dy(HL-o)<sub>2&...
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MDPI AG
2021-06-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/9/7/51 |
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doaj-f055c6308b404a909f6710b5017214d62021-07-23T13:47:17ZengMDPI AGInorganics2304-67402021-06-019515110.3390/inorganics9070051A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G LigandLin Miao0Mei-Jiao Liu1Man-Man Ding2Yi-Quan Zhang3Hui-Zhong Kou4Department of Chemistry, Tsinghua University, Beijing 100084, ChinaDepartment of Chemistry, Tsinghua University, Beijing 100084, ChinaJiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, ChinaJiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, ChinaDepartment of Chemistry, Tsinghua University, Beijing 100084, ChinaThe 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 <b>1</b>, [Dy(HL-o)<sub>2</sub>(MeOH)<sub>2</sub>](ClO<sub>4</sub>)<sub>3</sub>·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 <b>1</b> 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 (<i>E</i><sub>KD1</sub>) is basically related to the O<sub>phenoxy</sub>-Dy-O<sub>phenoxy</sub> bond angle, i.e., the larger O<sub>phenoxy</sub>-Dy-O<sub>phenoxy</sub> bond angle corresponds to a larger <i>E</i><sub>KD1</sub>.https://www.mdpi.com/2304-6740/9/7/51single-molecule magnetdysprosium complexrhodamine 6Gfluorescence |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Lin Miao Mei-Jiao Liu Man-Man Ding Yi-Quan Zhang Hui-Zhong Kou |
| spellingShingle |
Lin Miao Mei-Jiao Liu Man-Man Ding Yi-Quan Zhang Hui-Zhong Kou A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand Inorganics single-molecule magnet dysprosium complex rhodamine 6G fluorescence |
| author_facet |
Lin Miao Mei-Jiao Liu Man-Man Ding Yi-Quan Zhang Hui-Zhong Kou |
| author_sort |
Lin Miao |
| title |
A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand |
| title_short |
A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand |
| title_full |
A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand |
| title_fullStr |
A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand |
| title_full_unstemmed |
A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand |
| title_sort |
dy(iii) fluorescent single-molecule magnet based on a rhodamine 6g ligand |
| publisher |
MDPI AG |
| series |
Inorganics |
| issn |
2304-6740 |
| publishDate |
2021-06-01 |
| description |
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 <b>1</b>, [Dy(HL-o)<sub>2</sub>(MeOH)<sub>2</sub>](ClO<sub>4</sub>)<sub>3</sub>·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 <b>1</b> 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 (<i>E</i><sub>KD1</sub>) is basically related to the O<sub>phenoxy</sub>-Dy-O<sub>phenoxy</sub> bond angle, i.e., the larger O<sub>phenoxy</sub>-Dy-O<sub>phenoxy</sub> bond angle corresponds to a larger <i>E</i><sub>KD1</sub>. |
| topic |
single-molecule magnet dysprosium complex rhodamine 6G fluorescence |
| url |
https://www.mdpi.com/2304-6740/9/7/51 |
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