Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate
Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Magnetochemistry |
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| Online Access: | https://www.mdpi.com/2312-7481/7/1/8 |
| _version_ | 1797542399062310912 |
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| author | Oier Pajuelo-Corral Jose Angel García Oscar Castillo Antonio Luque Antonio Rodríguez-Diéguez Javier Cepeda |
| author_facet | Oier Pajuelo-Corral Jose Angel García Oscar Castillo Antonio Luque Antonio Rodríguez-Diéguez Javier Cepeda |
| author_sort | Oier Pajuelo-Corral |
| collection | DOAJ |
| description | Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>3</sub>]·2H<sub>2</sub>O}<sub>n</sub> (<b>1-Dy</b>), {[Dy(μ<sub>3</sub>-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>2</sub>] ~2.33H<sub>2</sub>O}<sub>n</sub> (<b>2-Dy</b>), {[Dy<sub>2</sub>(μ<sub>3</sub>-pmdc)(μ<sub>4</sub>-pmdc)(μ-ox)(H<sub>2</sub>O)<sub>3</sub>]·5H<sub>2</sub>O}<sub>n</sub> (<b>3-Dy</b>), {[Ln(μ<sub>3</sub>-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>2</sub>]·H<sub>2</sub>O}<sub>n</sub> (where Ln(III) = Nd (<b>4-Nd</b>), Sm (<b>4-Sm</b>), Eu (<b>4-Eu</b>) and Dy (<b>4-Dy</b>)) and {[Dy(μ<sub>4</sub>-pmdc)(NO<sub>3</sub>)(H<sub>2</sub>O)]·H<sub>2</sub>O}<sub>n</sub> (<b>5-Dy</b>). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds <b>1-Dy</b>, <b>2-Dy</b>, <b>3-Dy</b> and <b>4-Ln</b>, whereas in <b>5-Dy</b> the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy<sup>3+</sup> ions within the crystal structure, which is confirmed by computed values of the exchange parameters <i>J</i>. In addition, alternating current measurements show field-induced single-molecule magnet (SMM) behavior in compounds <b>1-Dy</b>, <b>2-Dy</b>, <b>4-Dy</b> and <b>5-Dy</b>, whereas slight-frequency dependence is also observed in <b>3-Dy</b>. Solid state emission spectra performed at room temperature for those compounds emitting in visible region confirm the occurrence of significant ligand-to-lanthanide charge transfer in view of the strong characteristic emissions for all lanthanide ions. Emission decay curves were also recorded to estimate the emission lifetimes for the reported compounds, in addition to the absolute quantum yields. Among them, the high quantum yield of 25.0% measured for <b>4-Eu</b> is to be highlighted as a representative example of the good emissive properties of the materials. |
| first_indexed | 2024-03-10T13:30:02Z |
| format | Article |
| id | doaj.art-75cd527ef293455486e19ede9ed9b17c |
| institution | Directory Open Access Journal |
| issn | 2312-7481 |
| language | English |
| last_indexed | 2024-03-10T13:30:02Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Magnetochemistry |
| spelling | doaj.art-75cd527ef293455486e19ede9ed9b17c2023-11-21T08:06:59ZengMDPI AGMagnetochemistry2312-74812021-01-0171810.3390/magnetochemistry7010008Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-DicarboxylateOier Pajuelo-Corral0Jose Angel García1Oscar Castillo2Antonio Luque3Antonio Rodríguez-Diéguez4Javier Cepeda5Departamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia, SpainDepartamento de Física Aplicada II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 48940 Leioa, SpainDepartamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 48940 Leioa, SpainDepartamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 48940 Leioa, SpainDepartamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, SpainDepartamento de Química Aplicada, Facultad de Química, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), 20018 Donostia, SpainHerein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>3</sub>]·2H<sub>2</sub>O}<sub>n</sub> (<b>1-Dy</b>), {[Dy(μ<sub>3</sub>-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>2</sub>] ~2.33H<sub>2</sub>O}<sub>n</sub> (<b>2-Dy</b>), {[Dy<sub>2</sub>(μ<sub>3</sub>-pmdc)(μ<sub>4</sub>-pmdc)(μ-ox)(H<sub>2</sub>O)<sub>3</sub>]·5H<sub>2</sub>O}<sub>n</sub> (<b>3-Dy</b>), {[Ln(μ<sub>3</sub>-pmdc)(μ-ox)<sub>0.5</sub>(H<sub>2</sub>O)<sub>2</sub>]·H<sub>2</sub>O}<sub>n</sub> (where Ln(III) = Nd (<b>4-Nd</b>), Sm (<b>4-Sm</b>), Eu (<b>4-Eu</b>) and Dy (<b>4-Dy</b>)) and {[Dy(μ<sub>4</sub>-pmdc)(NO<sub>3</sub>)(H<sub>2</sub>O)]·H<sub>2</sub>O}<sub>n</sub> (<b>5-Dy</b>). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds <b>1-Dy</b>, <b>2-Dy</b>, <b>3-Dy</b> and <b>4-Ln</b>, whereas in <b>5-Dy</b> the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy<sup>3+</sup> ions within the crystal structure, which is confirmed by computed values of the exchange parameters <i>J</i>. In addition, alternating current measurements show field-induced single-molecule magnet (SMM) behavior in compounds <b>1-Dy</b>, <b>2-Dy</b>, <b>4-Dy</b> and <b>5-Dy</b>, whereas slight-frequency dependence is also observed in <b>3-Dy</b>. Solid state emission spectra performed at room temperature for those compounds emitting in visible region confirm the occurrence of significant ligand-to-lanthanide charge transfer in view of the strong characteristic emissions for all lanthanide ions. Emission decay curves were also recorded to estimate the emission lifetimes for the reported compounds, in addition to the absolute quantum yields. Among them, the high quantum yield of 25.0% measured for <b>4-Eu</b> is to be highlighted as a representative example of the good emissive properties of the materials.https://www.mdpi.com/2312-7481/7/1/8single-molecule magnetslanthanide(III) ionscoordination polymersslow relaxation of the magnetizationphotoluminescence |
| spellingShingle | Oier Pajuelo-Corral Jose Angel García Oscar Castillo Antonio Luque Antonio Rodríguez-Diéguez Javier Cepeda Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate Magnetochemistry single-molecule magnets lanthanide(III) ions coordination polymers slow relaxation of the magnetization photoluminescence |
| title | Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate |
| title_full | Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate |
| title_fullStr | Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate |
| title_full_unstemmed | Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate |
| title_short | Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate |
| title_sort | single ion magnet and photoluminescence properties of lanthanide iii coordination polymers based on pyrimidine 4 6 dicarboxylate |
| topic | single-molecule magnets lanthanide(III) ions coordination polymers slow relaxation of the magnetization photoluminescence |
| url | https://www.mdpi.com/2312-7481/7/1/8 |
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