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Bartolomé E, Arauzo A, Fuertes S, Navarro-Spreafica L, Sevilla P, Fernández Cortés H, Settineri N, Teat SJ, Sañudo EC. Luminescent and magnetic [TbEu] 2D metal-organic frameworks. Dalton Trans 2023; 52:7258-7270. [PMID: 37166156 DOI: 10.1039/d3dt00367a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We present the synthesis, through a simple, microwave-assisted method, of lanthanoid-based 2D metal-organic frameworks (MOFs) of general formula [LnxLn'1-x(MeCOO)(PhCOO)2], including homonuclear compounds (x = 1), LnEu, Tb, and heterometallic compounds, [TbEu]. The crystalline material is formed by neutral nanosheets held together by van der Waals interactions, which can be easily exfoliated by sonication. Photoluminescent emission in the visible range was observed for all of the synthesized 2D MOF compounds via excitation of the ligand, showing benzoates are efficient antenna ligands. Efficient energy transfer from Tb → Eu was observed in the heterometallic [TbEu] compounds, which could potentially perform as luminescent thermometers. Inks containing nanosheets of 2D MOFs exfoliated in solution were prepared, and luminescent prints of Tb and Eu 2D MOFs on paper were made to show the possible application for anticounterfeiting. Frequency-dependent ac susceptibility results show the occurrence of slow magnetic relaxation in [TbEu] compounds through direct relaxation mechanisms, affected by bottleneck effect. A slowing down of the relaxation time is observed as the Eu/Tb ratio increases.
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Affiliation(s)
- E Bartolomé
- Escola Universitària Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017 Barcelona, Spain.
| | - A Arauzo
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, and Departamento de Física de la Materia Condensada, 50009 Zaragoza, Spain
| | - S Fuertes
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catalisis, Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - L Navarro-Spreafica
- Secció de Química Inorgànica, Departament de Química Inorgànica i Orgànica Universitat de Barcelona, C/Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - P Sevilla
- Escola Universitària Salesiana de Sarrià (EUSS), Passeig Sant Joan Bosco 74, 08017 Barcelona, Spain.
| | - H Fernández Cortés
- Secció de Química Inorgànica, Departament de Química Inorgànica i Orgànica Universitat de Barcelona, C/Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | | | | | - E C Sañudo
- Secció de Química Inorgànica, Departament de Química Inorgànica i Orgànica Universitat de Barcelona, C/Martí i Franquès, 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, IN2UB, C/Martí i Franquès, 1-11, 08028 Barcelona, Spain.
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Rosado Piquer L, Dey S, Castilla-Amorós L, Teat SJ, Cirera J, Rajaraman G, Sañudo EC. Microwave assisted synthesis of heterometallic 3d–4f M4Ln complexes. Dalton Trans 2019; 48:12440-12450. [DOI: 10.1039/c9dt02567g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We describe the solvent-free microwave assisted synthesis and magnetic properties of a series of 3d–4f complexes of formula [M4Ln(OH)2(chp)4(SALOH)5(H2O)(MeCN)(Solv)] (Solv = MeOH, MeCN, H2O, M = Ni(ii), Co(ii); Ln = La, Gd, Dy, Tb).
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Affiliation(s)
- L. Rosado Piquer
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - S. Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - L. Castilla-Amorós
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - S. J. Teat
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - J. Cirera
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - G. Rajaraman
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - E. C. Sañudo
- Departament de Química Inorgànica i Orgànica
- Secció Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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Rosado Piquer L, Jiménez Romero E, Lan Y, Wernsdorfer W, Aromí G, Sañudo EC. Hybrid molecular-inorganic materials: a heterometallic [Ni4Tb] complex grafted on superparamagnetic iron oxide nanoparticles. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00468g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ni4Tb SMMs grafted onto superparamagnetic IO-NPs retain their magnetic properties intact on the surface of the magnetic substrate.
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Affiliation(s)
- L. Rosado Piquer
- Departament de Química Inorgànica i Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | | | - Y. Lan
- CNRS and Université Grenoble Alpes
- Institut Néel
- 38042 Grenoble
- France
| | - W. Wernsdorfer
- CNRS and Université Grenoble Alpes
- Institut Néel
- 38042 Grenoble
- France
- Physikalisches Institut
| | - G. Aromí
- Departament de Química Inorgànica i Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - E. C. Sañudo
- Departament de Química Inorgànica i Institut de Nanociència i Nanotecnologia
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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Ledezma-Gairaud M, Grangel L, Aromí G, Fujisawa T, Yamaguchi A, Sumiyama A, Sañudo EC. From Serendipitous Assembly to Controlled Synthesis of 3d–4f Single-Molecule Magnets. Inorg Chem 2014; 53:5878-80. [DOI: 10.1021/ic500418e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Ledezma-Gairaud
- Centro de Electroquímica y Energía
Química (CELEQ) and Escuela de Química, Universidad de Costa Rica, San
José, Costa Rica
| | - L. Grangel
- Departament de Química
Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - G. Aromí
- Departament de Química
Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - T. Fujisawa
- Graduate School of
Material Science, University of Hyogo, Hyogo 678-1297, Japan
| | - A. Yamaguchi
- Graduate School of
Material Science, University of Hyogo, Hyogo 678-1297, Japan
| | - A. Sumiyama
- Graduate School of
Material Science, University of Hyogo, Hyogo 678-1297, Japan
| | - E. C. Sañudo
- Departament de Química
Inorgànica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
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Garlatti E, Carretta S, Affronte M, Sañudo EC, Amoretti G, Santini P. Magnetic properties and relaxation dynamics of a frustrated Ni₇ molecular nanomagnet. J Phys Condens Matter 2012; 24:104006. [PMID: 22354893 DOI: 10.1088/0953-8984/24/10/104006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The Ni₇ nanomagnet represents an ideal model system for investigating the effects of geometrical frustration in magnetic interactions. The Ni ions in the magnetic core are arranged on two corner-sharing tetrahedra and interact through antiferromagnetic exchange couplings. We show that the high degree of frustration leads to a magnetic energy spectrum with large degeneracies which result in unusual static and dynamical magnetic properties. In particular, the relaxation dynamics of the magnetization is characterized by several distinct characteristic times. We also discuss the possible interest of Ni₇ for magnetocaloric refrigeration.
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Affiliation(s)
- E Garlatti
- Dipartimento di Scienze Molecolari Applicate ai Biosistemi, Universit`a di Milano, via Trentacoste 2, I-20134 Milano, Italy
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Sañudo EC, Font-Bardia M, Solans X, Laye RH. Hexanuclear Fe(iii) complexes and their thermal decomposition into an undecanuclear species. NEW J CHEM 2011. [DOI: 10.1039/c0nj00621a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Affiliation(s)
- Yong-Fei Zeng
- Department of Chemistry and TKL of Metal and Molecule-based Materials Chemistry, Nankai University, Tianjin, 300071 Beijing, China
| | - Guan-Cheng Xu
- National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
| | - Xin Hu
- Department of Chemistry and TKL of Metal and Molecule-based Materials Chemistry, Nankai University, Tianjin, 300071 Beijing, China
| | - Zhuo Chen
- Department of Chemistry and TKL of Metal and Molecule-based Materials Chemistry, Nankai University, Tianjin, 300071 Beijing, China
| | - Xian-He Bu
- Department of Chemistry and TKL of Metal and Molecule-based Materials Chemistry, Nankai University, Tianjin, 300071 Beijing, China
| | - Song Gao
- National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
| | - E. C. Sañudo
- Institut de Nanociència i Nanotecnologia, Department of Chemistry, Universitat de Barcelona, Diagonal 6487, 08028 Barcelona, Spain
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Hu BW, Zhao JP, Yang Q, Zhang XF, Evangelisti M, Sañudo EC, Bu XH. Synthesis, structure and magnetic properties of two new azido-CoII coordination architectures: From ferromagnetic coupling to single-chain-magnets. Dalton Trans 2010; 39:11210-7. [DOI: 10.1039/c0dt00566e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li ZX, Zhao JP, Sañudo EC, Ma H, Pan ZD, Zeng YF, Bu XH. New 3D Coordination Polymers Constructed from Pillared Metal−Formate Kagomé Layers Exhibiting Spin Canting Only in the Nickel(II) Complex. Inorg Chem 2009; 48:11601-7. [DOI: 10.1021/ic901564y] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zuo-Xi Li
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jiong-Peng Zhao
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - E. C. Sañudo
- Institut de Nanociència i Nanotecnologia i Departament de Química Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain
| | - Hong Ma
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Zhong-Da Pan
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yong-Fei Zeng
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Xian-He Bu
- Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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Zhao JP, Hu BW, Sañudo EC, Yang Q, Zeng YF, Bu XH. Tuning the Structure and Magnetism of Azido-Mediated CuII Systems by Coligand Modifications. Inorg Chem 2009; 48:2482-9. [PMID: 19215063 DOI: 10.1021/ic802066a] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiong-Peng Zhao
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
| | - Bo-Wen Hu
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
| | - E. C. Sañudo
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
| | - Qian Yang
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
| | - Yong-Fei Zeng
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
| | - Xian-He Bu
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, and Departament de Química Inorgànica, Universitat de Barcelona, Diagonal, 647, 08028-Barcelona, Spain
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Hu BW, Zhao JP, Sañudo EC, Liu FC, Zeng YF, Bu XH. Nickel(ii)–azido ferromagnetic chains in a 3D porous metal–organic framework with breathing guest molecules. Dalton Trans 2008:5556-9. [DOI: 10.1039/b812402g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brechin EK, Sañudo EC, Wernsdorfer W, Boskovic C, Yoo J, Hendrickson DN, Yamaguchi A, Ishimoto H, Concolino TE, Rheingold AL, Christou G. Single-Molecule Magnets: Structure and Properties of [Mn18O14(O2CMe)18(hep)4(hepH)2(H2O)2](ClO4)2 with Spin S = 13. Inorg Chem 2005; 44:502-11. [PMID: 15679378 DOI: 10.1021/ic048857a] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of 2-(hydroxyethyl)pyridine (hepH) with a 2:1 molar mixture of [Mn3O(O2CMe)6(py)3]ClO4 and [Mn3O(O2CMe)6(py)3] in MeCN afforded the new mixed-valent (16Mn(III), 2Mn(II)), octadecanuclear complex [Mn18O14(O2CMe)18(hep)4(hepH)2(H2O)2](ClO4)2 (1) in 20% yield. Complex 1 crystallizes in the triclinic space group P. Direct current magnetic susceptibility studies in a 1.0 T field in the 5.0-300 K range, and variable-temperature variable-field dc magnetization studies in the 2.0-4.0 K and 2.0-5.0 T ranges were obtained on polycrystalline samples. Fitting of magnetization data established that complex 1 possesses a ground-state spin of S = 13 and D = -0.18 K. This was confirmed by the value of the in-phase ac magnetic susceptibility signal. Below 3 K, the complex exhibits a frequency-dependent drop in the in-phase signal, and a concomitant increase in the out-of-phase signal, consistent with slow magnetization relaxation on the ac time scale. This suggests the complex is a single-molecule magnet (SMM), and this was confirmed by hysteresis loops below 1 K in magnetization versus dc field sweeps on a single crystal. Alternating current and direct current magnetization data were combined to yield an Arrhenius plot from which was obtained the effective barrier (U(eff)) for magnetization reversal of 21.3 K. Below 0.2 K, the relaxation becomes temperature-independent, consistent with relaxation only by quantum tunneling of the magnetization (QTM) through the anisotropy barrier via the lowest-energy MS = +/-13 levels of the S = 13 spin manifold. Complex 1 is thus the SMM with the largest ground-state spin to display QTM.
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Affiliation(s)
- E K Brechin
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
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