Series of Metal Organic Frameworks Assembled from Ln(III), Na(I), and Chiral Flexible-Achiral Rigid Dicarboxylates Exhibiting Tunable UV–vis–IR Light Emission

Amghouz, Zakariae; García-Granda, Santiago; Garcı́a, José R.; Ferreira, Rute A. S.; Mafra, Luís; Carlos, Luı́s D.; Rocha, João

doi:10.1021/ic202020z

Cited by 66 publications

(30 citation statements)

References 77 publications

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“…In continuation of our previous works concerning the synthesis and characterization of LOFs based on flexible [38], rigids [15,22], and rigid-flexible dicaboxylate ligands [16,18] Single-Crystal X-Ray Diffraction Studies. For 25pYb and 25pY-2 samples (not suitable single-crystal in the case of 25pY-1), data collection was performed at 293 K on an Agilent Gemini CCD diffractometer, using CuKĮ radiation.…”

Section: Introductionmentioning

confidence: 77%

“…Recently, much work has been focused on lanthanide-containing MOFs (LOFs) [14][15][16], because these compounds give rise to luminescence materials [17][18][19][20][21][22][23], with increased brightness and emission quantum yield [24,25], and therefore they could be very promising class of materials in a wide range of optical applications including fluorescent sensing [26][27][28], imaging contrast agents [29,30], and lighting and displays [31]. Many d-block transition metal cations prefer to be coordinated by soft donor atoms, whereas lanthanide cations (Ln 3+ ), with their high and variable coordination numbers and flexible coordination environments, have high affinity for hard donor atoms [32,33], and therefore leading to complex network topologies with promising potential applications.…”

Section: Introductionmentioning

confidence: 99%

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Metal–organic frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln4(OH)4] building units

Abdelbaky

Amghouz

Fernández-Zapico

et al. 2015

Journal of Solid State Chemistry

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Cite this article as: Mohammed S.M. Abdelbaky, Zakariae Amghouz, Eva Fernández-Zapico, Santiago García-Granda, José R. García, Metal-organic Frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln 4 (OH) 4 ] building Units, Journal of Solid State Chemistry, http://dx. AbstractLanthanide-organic frameworks based on 2,5-pyridinedicaboxylate (25p) ligand, formulated ashave been obtained as single phases under hydrothermal conditions. 25pYb and 25pY-1 are isostructural, and crystallize in the triclinic space group, P-1, with a = 8.6075(5) Å, b = 14.8478(7) Å, c = 15.9164(9) Å, α = 86.277(4)º, ȕ = 80.196(5)º, Ȗ = 81.785(4)º, and a = 8.7166(6) Å, b = 14.966(1) Å, c = 15.966(1) Å, α = 86.260(6)º, ȕ = 80.036(6)º, Ȗ = 81.599(6)º, respectively. 25pY-2 crystallizes in the monoclinic space group, P2 1 /c, with a = 24.9117(17) Å, b = 13.7340(8) Å, c = 14.3385(10) Å, ȕ = 100.551(7)º. 25pYb and 25pY-2 have been structurally characterized by single-crystal X-ray diffraction. The 25pYb structure is based on tetranuclear cuban-like [Yb 4 (OH) 4 ] 8+ clusters, which are interconnected to eight neighbouring clusters through teen surrounding 25p ligands leading to neutral 3D framework, while the structure of 25pY-2 is based on two independent cuban-like [Y 4 (OH) 4 ] 8+ clusters, which are joined together through Y1 cation leading to the formation of hexanuclear [Y 6 (OH) 8 ] 10+ clusters, which in turn are joined via Y2 cation resulting in infinite inorganic chain extending along c-axis,and each chain is interconnected to six adjacent chains through 25p ligands leading finally to 3D framework. The luminescence properties of Eu 3+ and Tb 3+ doped 25pY-1 and 25pY-2 compounds have also been investigated. All materials has been characterized by powder X-ray diffraction, thermal analyses (TG-SDTA-MS), FTIR spectroscopy, C-H-N elemental analysis, scanning electron microscopy (SEM-EDX), and powder X-ray thermodiffraction.

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Section: Introductionmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Metal–organic frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln4(OH)4] building units

Abdelbaky

Amghouz

Fernández-Zapico

et al. 2015

Journal of Solid State Chemistry

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“…Amghouz et al [65,66] layered chiral structures built up by mixing Ln(III), Na(I), and chiral flexibleachiral rigid dicarboxylate ligands, and crystallize in the orthorhombic chiral space group C222 1 . In each compound, the Ln(III) cation is bonded to eight oxygen atoms, six of them are from carboxylic groups and two are from hydroxyl groups.…”

Section: Synthesis Of Chiral Lanthanide Mofs With Chiral Ligandsmentioning

confidence: 99%

Chiral Lanthanide Metal-Organic Frameworks

Liu

Tang

2014

Structure and Bonding

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Chiral metal-organic frameworks (MOFs) have attracted much attention, not only due to their potential applications in enantioselective separation and catalysis, but also because of many advantages such as the high density of active catalytic centers, high level of porosity, regular and reliable crystalline nature, and relatively easy immobilization as compared to other heterogeneous systems. As metal-connecting nodes of MOFs, a large number of chemical synthetic strategies have focused on the transition metal ions which exhibit specific coordination geometries and restricted stereochemistry in the past two decades. However, the researches on chiral lanthanide MOFs are still limited up to now because of high coordination numbers, kinetic lability, weak stereochemical preference, and more variable nature of the coordination sphere for lanthanide ions. In this chapter, we would give a brief introduction to highlight the synthetic approaches reported and the structural features of chiral lanthanide MOFs or coordination polymer, which may be beneficial to explore structurally and functionally defined chiral solid materials.

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“…28,30 In addition, the incorporation of alkali metals is very rare and seems significant, because alkali metal-based materials are important for their promising applications in ion-exchange, nonlinear optics, molecular recognition, etc. 31 The construction of these heterometallic frameworks relies on the choice of proper linkage ligands. 1,10-phenanthroline-5,6-dione (pdon) is a good candidate for the construction of heterometallics-containing neutral frameworks because it incorporates both the orthoquinone and α-diimine functionalities showing distinct affinities for metal ions.…”

Section: Introductionmentioning

confidence: 99%

Heavy main-group iodometallates hybridized by alkali metal via 1,10-Phenanthroline-5,6-dione

et al. 2015

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Alkali metals were introduced into heavy main-group iodometallates to get two new IA/IVAheterometallic frameworks [PbI 3 K(pdon)(H 2 O) 2 ] n (1) and {[Pb 3 I 9 K 2 (pdon) 2 (H 3 O)]·H 2 O} n (2) (pdon=1,10-phenanthroline-5,6-dione), which were obtained as single phases by hydrothermal method at different pH values. Compounds 1 and 2 are three-dimensional heterometallic frameworks constructed from the linkage of pdon ligand between iodometallate chains and potassium oxides/iodide clusters. Specially, these two heterometallic frameworks exhibit broadened absorption bands at 700 and 750 nm compared with those of bulk PbI 2 and pdon ligand. The band gap of 2 is wider than that of 1, which is due to the absence of π · · · π interaction in 2. Their thermal stabilities are also discussed.

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Series of Metal Organic Frameworks Assembled from Ln(III), Na(I), and Chiral Flexible-Achiral Rigid Dicarboxylates Exhibiting Tunable UV–vis–IR Light Emission

Cited by 66 publications

References 77 publications

Metal–organic frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln4(OH)4] building units

Metal–organic frameworks assembled from lanthanide and 2,5-pyridinedicaboxylate with cubane-like [Ln4(OH)4] building units

Chiral Lanthanide Metal-Organic Frameworks

Heavy main-group iodometallates hybridized by alkali metal via 1,10-Phenanthroline-5,6-dione

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