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Synthesis, Structure, Magnetic and Photoluminescent Properties of Dysprosium(III) Schiff Base Single‐Molecule Magnets: Investigation of the Relaxation of the Magnetizationстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 16 сентября 2020 г.
- Авторы: Jérôme Long, Basalov Ivan V., Lyssenko Konstantin A., Cherkasov Anton V., Mamontova Ekaterina, Guari Yannick, Larionova Joulia, Trifonov Alexander A.
- Журнал: Chemistry - An Asian Journal
- Том: 15
- Номер: 17
- Год издания: 2020
- Издательство: Wiley - V C H Verlag GmbbH & Co.
- Местоположение издательства: Germany
- Первая страница: 2706
- Последняя страница: 2715
- DOI: 10.1002/asia.202000658
- Аннотация: We report here the synthesis, structure, magnetic and photoluminescent properties of three new bifunctional Schiff‐base complexes [Dy(L1)2(py)2][B(Ph)4]⋅py (1), [Dy(L1)2Cl(DME)] ⋅ 0.5DME (2) and [Dy(L2)2Cl] ⋅ 2.5(C7H8) (3) (HL1=Phenol, 2,4‐bis(1,1‐dimethylethyl)‐6‐[[(2‐methoxy‐5‐methylphenyl)imino]methyl]; HL2=Phenol, 2,4‐bis(1,1‐dimethylethyl)‐6‐[[(2‐methoxyphenyl)imino]methyl]). The coordination environment of the Dy3+ ion and the direction of the anisotropic axis may be controlled by the combination of the substituent groups of the Schiff bases, the nature of the counter‐ions (Cl− vs. BPh4−) and the coordinative solvent molecules. A zero‐field slow relaxation of the magnetization is evidenced for all complexes but strong differences in the relaxation dynamics are observed depending on the Dy3+ site geometry. In this sense, complex 1 exhibits an anisotropy barrier of 472 cm−1, which may be favourably compared to other related examples due to the shortening of the Dy−O bond in the axial direction. Besides, the three complexes exhibit a ligand‐based luminescence making them as bifunctional magneto‐luminescent systems.
- Добавил в систему: Лысенко Константин Александрович