Aliphatic-Bridged Early Lanthanide Metal–Organic Frameworks: Topological Polymorphism and Excitation-Dependent Luminescence Научная публикация
| Журнал |
Inorganics
ISSN: 2304-6740 |
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| Вых. Данные | Год: 2022, Том: 10, Номер: 10, Страницы: 163 Страниц : 1 DOI: 10.3390/inorganics10100163 | ||
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| Организации |
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Информация о финансировании (2)
| 1 | Министерство науки и высшего образования Российской Федерации | 121031700313-8 |
| 2 | Министерство науки и высшего образования Российской Федерации | 121031700321-3 |
Реферат:
Six new three-dimensional metal–organic frameworks based on early lanthanide(III) cations and trans-1,4-cyclohexanedicarboxylic acid (H2chdc) were obtained. Their crystal structures were determined by single-crystal X-ray diffraction analysis. The structure of [La2(H2O)4(chdc)3]·2DMF·H2O (1; DMF = N,N-dimethylformamide) contains one-dimensional infinite La(III)-carboxylate chains interconnected by cyclohexane moieties to form a highly porous polymeric lattice with 30% solvent accessible volume. Compounds [Ln2(phen)2(chdc)3]·0.75DMF (2Ln; Ln3+ = Ce3+, Pr3+, Nd3+ and Sm3+; phen = 1,10-phenanthroline) are based on binuclear carboxylate building blocks, which are decorated by chelate phenanthroline ligands and interconnected by cyclohexane moieties to form more dense isostructural coordination frameworks with primitive cubic pcu topology. Compound [Nd2(phen)2(chdc)3]·2DMF·0.67H2O (3) is based on secondary building units similar to 2Ln and contains a coordination lattice isomeric to 2Ln with a rare hexagonal helical snz topology. Thermal stability and luminescent properties were investigated. For 2Sm, a strong and nonmonotonous dependence of the luminescence color on the variation of excitation wavelength was revealed, changing its emission from pinkish red at λex = 340 nm to white at λex = 400 nm, and then to yellow at lower excitation energies. Such nonlinear behavior was rationalized in terms of the contribution of several different luminescence mechanisms. Thus, 2Sm is a rather rare example of a highly tunable monometallic lanthanide-based luminophore with possible applications in light-emitting devices and optical data processing.
Библиографическая ссылка:
Demakov P.A.
, Ryadun A.A.
, Fedin V.P.
Aliphatic-Bridged Early Lanthanide Metal–Organic Frameworks: Topological Polymorphism and Excitation-Dependent Luminescence
Inorganics. 2022. V.10. N10. P.163. DOI: 10.3390/inorganics10100163 WOS Scopus OpenAlex
Aliphatic-Bridged Early Lanthanide Metal–Organic Frameworks: Topological Polymorphism and Excitation-Dependent Luminescence
Inorganics. 2022. V.10. N10. P.163. DOI: 10.3390/inorganics10100163 WOS Scopus OpenAlex
Даты:
| Поступила в редакцию: | 30 авг. 2022 г. |
| Опубликована в печати: | 1 окт. 2022 г. |
Идентификаторы БД:
| Web of science: | WOS:000873395300001 |
| Scopus: | 2-s2.0-85140585182 |
| OpenAlex: | W4303709952 |