1. A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand.
- Author
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Miao, Lin, Liu, Mei-Jiao, Ding, Man-Man, Zhang, Yi-Quan, and Kou, Hui-Zhong
- Subjects
SINGLE molecule magnets ,AB-initio calculations ,MAGNETIC measurements ,BOND angles ,MAGNETIC relaxation - Abstract
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 . [ABSTRACT FROM AUTHOR]- Published
- 2021
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