Luminescence and Magnetism in Lanthanide-Based Coordination Polymers

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Hybrid and Composite Crystalline Materials".

Deadline for manuscript submissions: closed (31 January 2022) | Viewed by 12111

Special Issue Editors


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Guest Editor
MOLTECH-Anjou, UMR 6200, CNRS, UNIV Angers, 2 bd Lavoisier, 49045 Angers CEDEX, France
Interests: luminescence; coordination polymers; lanthanides; chirality; crystal structures

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Guest Editor
Department of Chemical and Geological Sciences, University of Cagliari, Highway 554, Crossroads for Sestu, I-09042 Monserrato (CA), Italy
Interests: 3D and 2D (graphene-like) coordination polymers/metal-organic frameworks (CPs/MOFs) with luminescent or magnetic properties; NIR-emitting Nanosheets for solvent sensing; development of Lanthanide MOF-based ratiometric thermometers for biomedical diagnostic; purely organic molecular conductors and/or magnetic conductors organic/inorganic hybrids based on oxocarbon ligands in combination with tetrathiafulvalene (TTF)-based derivatives

Special Issue Information

Dear Colleagues,

Lanthanide-based coordination polymers (Ln-CPs) have attracted an increasing amount of interest in the last two decades. The unique magnetic and optical properties of lanthanide(III) ions have attracted research on the preparation of Ln(III)-based molecular materials such as single-molecule magnets or luminescent materials. Among them, efforts have been devoted to the integration of these properties in Ln-CPs. Indeed, the organization of Ln(III) ions in CPs is of substantial importance for the processability of the functional material, a key feature for many applications. Through a careful choice of the organic linker, Ln-CPs have been developed and shown promising applications as sensors, light-emitting materials, layered magnets, and triboluminescent materials in optics. On the other hand, the construction of Ln-CPs with predicted architectures remains challenging. While structures and dimensionalities in CPs are mainly directed by synthetic conditions and the nature of the bridging ligand, in Ln-CPs, due to the more flexible coordination numbers and geometries of Ln(III) ions compared to transition metal ions, structures can also be affected by the presence of coordinated solvents and the nature of the Ln(III) ion itself, leading to a large variety of crystal structures. This Special Issue aims to outline recent efforts on the synthesis and structural characterization of Ln-CPs, with an emphasis on their unique magnetic and photophysical properties, processability, but also on the influence of crystal growth parameters that will allow us to identify and develop the future design and applications of Ln-CPs.

Dr. Alexandre Abhervé
Prof. Dr. Maria Laura Mercuri
Guest Editors

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Keywords

  • lanthanides
  • coordination polymers
  • luminescence
  • magnetism
  • crystal growth

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Published Papers (4 papers)

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Research

12 pages, 4299 KiB  
Article
Metal-Organic Framework vs. Coordination Polymer—Influence of the Lanthanide on the Nature of the Heteroleptic Anilate/Terephtalate 3D Network
by Mariangela Oggianu, Fabio Manna, Suchithra Ashoka Sahadevan, Narcis Avarvari, Alexandre Abhervé and Maria Laura Mercuri
Crystals 2022, 12(6), 763; https://doi.org/10.3390/cryst12060763 - 26 May 2022
Cited by 9 | Viewed by 3933
Abstract
Metal-organic frameworks (MOFs), whose definition has been regularly debated, are a sub-class of coordination polymers (CPs) which may feature both an overall 3D architecture and some degree of porosity. In this context, MOFs based on lanthanides (Ln-MOFs) could find many applications due to [...] Read more.
Metal-organic frameworks (MOFs), whose definition has been regularly debated, are a sub-class of coordination polymers (CPs) which may feature both an overall 3D architecture and some degree of porosity. In this context, MOFs based on lanthanides (Ln-MOFs) could find many applications due to the combination of sorption properties and magnetic/luminescent behaviors. Here we report rare examples of 3D Ln-CPs based on anilate linkers, obtained under solvothermal conditions using a heteroleptic strategy. The three compounds of formula [Yb2(μ-ClCNAn)2(μ-F4BDC)(H2O)4]·(H2O)3 (1), [Er2(μ-ClCNAn)2(μ-F4BDC)(H2O)4]·(H2O)4 (2) and [Eu2(μ-ClCNAn)2(μ-F4BDC)(H2O)6] (3) have been characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and optical measurements. Structural characterization revealed that compounds 1 and 2 present an interesting MOF architecture with extended rectangular cavities which are only filled with water molecules. On the other hand, compound 3 shows a much more complex topology with no apparent cavities. We discuss here the origins of such differences and highlight the crucial role of the Ln(III) ion nature for the topology of the CP. Compounds 1 and 2 now offer a playground to investigate the possible synergy between gas/solvent sorption and magnetic/luminescent properties of Ln-MOFs. Full article
(This article belongs to the Special Issue Luminescence and Magnetism in Lanthanide-Based Coordination Polymers)
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13 pages, 4477 KiB  
Article
The Complete Series of Lanthanoid-Chloranilato Lattices with Dimethylsulfoxide: Role of the Lanthanoid Size on the Coordination Number and Crystal Structure
by Samia Benmansour, Carlos J. Gómez-García and Antonio Hernández-Paredes
Crystals 2022, 12(2), 261; https://doi.org/10.3390/cryst12020261 - 15 Feb 2022
Cited by 9 | Viewed by 2473
Abstract
We report the synthesis, structural and magnetic characterization of the complete series of lanthanoid-based chloranilato 2D lattices with dimethylsulfoxide (dmso) formulated as: [Ln2(C6O4Cl2)3(dmso)6] with Ln = La(1), Ce(2 [...] Read more.
We report the synthesis, structural and magnetic characterization of the complete series of lanthanoid-based chloranilato 2D lattices with dimethylsulfoxide (dmso) formulated as: [Ln2(C6O4Cl2)3(dmso)6] with Ln = La(1), Ce(2), Pr(3), Nd(4), Sm(5), Eu(6), Gd(7) and Tb(8) or [Ln2(C6O4Cl2)3(dmso)4]·2dmso·2H2O with Ln = Dy(9), Ho(10), Er(11), Tm(12) and Yb(13); C6O4Cl22− = dianion of 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone = chloranilato. Single crystal X-ray analysis shows that the largest Ln(III) ions (La–Tb, 18) crystallise in the monoclinic P21/n space group (phase I), whereas the smallest ones (Dy–Yb, 913) crystallise in the triclinic P-1 space group (phase II). Both phases show a (6,3)-2D network with the typical hexagonal honeycomb lattice, although phase I presents important distortions, resulting in rectangular cavities with a brick-wall orientation. The largest ions (phase I) show a coordination number of nine with a capped square antiprismatic geometry in contrast to the smallest ions (phase II) that present a coordination number of eight with a triangular dodecahedral geometry. Magnetic measurements show that all the Ln(III) ions are magnetically well isolated, leading to the presence of a field induced single-ion magnet behaviour in the Er derivative, with an energy barrier of 23(2) K for DC fields of 20, 50 and 100 mT. Full article
(This article belongs to the Special Issue Luminescence and Magnetism in Lanthanide-Based Coordination Polymers)
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11 pages, 3329 KiB  
Article
Four Isostructural 3d-4f Mixed Metal Organic Frameworks and Their Magnetic Properties
by Marie L. Mortensen, Abigail L. Lewis, Gregory McCandless and Kenneth J. Balkus, Jr.
Crystals 2021, 11(12), 1547; https://doi.org/10.3390/cryst11121547 - 10 Dec 2021
Cited by 8 | Viewed by 2974
Abstract
Four new isostructural 3d-4f mixed metal organic frameworks (MOFs) Cu Gd2 (BDC)4, compound 1, Cu Ho2 (BDC)4, compound 2, Cu Eu2 (BDC)4, compound 3, and Cu Dy2 (BDC)4, [...] Read more.
Four new isostructural 3d-4f mixed metal organic frameworks (MOFs) Cu Gd2 (BDC)4, compound 1, Cu Ho2 (BDC)4, compound 2, Cu Eu2 (BDC)4, compound 3, and Cu Dy2 (BDC)4, compound 4 were successfully synthesized. The structure, stability, and magnetic properties were analyzed. Each MOF has two lanthanide ions and one copper ion node with terephthalic acid as the organic linker. The lanthanide ions form a dimer with each having a capped trigonal prismatic geometry while the copper ion has a square planar geometry. Each of these MOFs shows varying degrees of antiferromagnetic interactions. Full article
(This article belongs to the Special Issue Luminescence and Magnetism in Lanthanide-Based Coordination Polymers)
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9 pages, 2511 KiB  
Communication
Polymeric Terbium(III) Squarate Hydrate as a Luminescent Magnet
by Rina Takano and Takayuki Ishida
Crystals 2021, 11(10), 1221; https://doi.org/10.3390/cryst11101221 - 9 Oct 2021
Cited by 4 | Viewed by 1913
Abstract
Polymeric terbium(III) squarate hydrate [{Tb2(C4O4)3(H2O)8}n] was prepared from TbCl3 or Tb2O3 and squaric acid. The crystal structure was determined in a monoclinic Pc space group, [...] Read more.
Polymeric terbium(III) squarate hydrate [{Tb2(C4O4)3(H2O)8}n] was prepared from TbCl3 or Tb2O3 and squaric acid. The crystal structure was determined in a monoclinic Pc space group, and the whole molecular arrangement gives a sandwiched two-dimensional structure. The coordination polyhedra are described as a square antiprism. The solid complex emits green light under UV irradiation at room temperature with the quantum yield of 25%. Although Tb3+ is a non-Kramers ion, the alternating-current magnetic susceptibility showed frequency dependence in a 2000-Oe DC field, and the effective energy barrier for magnetization reorientation was 33(2) K. Thus, [{Tb2(C4O4)3(H2O)8}n] displayed functions of a potential luminescent magnet. Full article
(This article belongs to the Special Issue Luminescence and Magnetism in Lanthanide-Based Coordination Polymers)
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