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Influence of Ligand Environment Stoichiometry on NIR-Luminescence Efficiency of Sm3+, Pr3+ and Nd3+ Ions Coordination Compoundsстатья
- Авторы: Polikovskiy Trofim, Korshunov Vladislav, Metlin Mikhail, Gontcharenko Viktoria, Metlina Darya, Datskevich Nikolay, Kiskin Mikhail, Belousov Yury, Tsorieva Alisia, Taydakov Ilya
- Журнал: Molecules
- Том: 28
- Номер: 15
- Год издания: 2023
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 5892
- Последняя страница: 5892
- DOI: 10.3390/molecules28155892
- Аннотация: Six new complexes of the ligand HQcy (-4-(cyclohexanecarbonyl)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one) and Ln3+ ions with emission in the near-infrared (Nd3+) or visible andnear-infrared (Sm3+, Pr3+) spectral regions were synthesized and characterized using various methods,including single crystal X-ray diffraction. The study demonstrated that both tris complexes[LnQcy3(H2O)(EtOH)] and tetrakis-acids [H3O][LnQcy4] can be synthesized by varying the syntheticconditions. The photochemical properties of the complexes were investigated experimentally andtheoretically using various molecular spectroscopy techniques and Judd–Ofelt theory. The objectivewas to quantitatively and qualitatively disclose the influence of complex stoichiometry on its luminescenceproperties. The study showed that the addition of an extra ligand molecule (in the tetrakisspecies) increased molar extinction by up to 2 times, affected the shape of photoluminescence spectra,especially of the Pr3+ complex, and increased the quantum yield of the Sm3+ complex by up to 2times. The results obtained from this study provide insights into the luminescent properties of lanthanidecoordination compounds, which are crucial for the design and development of novel photonicmaterials with tailored photophysical properties.
- Добавил в систему: Белоусов Юрий Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | _036_Molecules_SmPrNd.pdf | 7,4 МБ | 31 августа 2023 [Yury_Belousov] |