Synthesis and characterization of Tb3+ and Eu3+ metal-organic frameworks with TFBDC2− linkers

Laurikenas, Andrius; Katelnikovas, Artūras; Skaudžius, Ramūnas; Kareiva, Aivaras

doi:10.1016/j.optmat.2017.05.037

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…The emission lines for SmMOF (λ ex = 275 nm) are assigned to 4 The photoluminescence measurements showed that Ce and La MOFs with BTC ligands are optically inactive. This is in a good agreement with the literature data [16,17].…”

Section: Luminescent Propertiesmentioning

confidence: 99%

On the Synthesis and Characterization of Lanthanide Metal-Organic Frameworks

2018

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Abstract:In this study, lanthanide metal-organic frameworks Ln(BTC)(DMF) 2 (H 2 O) (LnMOFs) are synthesized using the metal nitrates as lanthanide (Ln = La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb and Lu) source and 1,3,5-benzenetricarboxylic acid (BTC) as a coordination ligand. X-ray diffraction (XRD) analysis, Fourier-transform infrared spectroscopy (FTIR), thermogravimetric (TG/DTG) analysis fluorescence spectroscopy (FLS), and scanning electron microscopy (SEM) are employed to characterize the newly synthesized LnMOFs.

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Section: Luminescent Propertiesmentioning

confidence: 99%

On the Synthesis and Characterization of Lanthanide Metal-Organic Frameworks

2018

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“…Taking advantage of unique fluorescence properties of rare earth (RE) elements including yttrium and lanthanides, RE-MOFs have been applied in broad applications, such as light emitting, [72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88] sensing, [89][90][91][92][93][94] catalysis, [95][96][97] and imaging [98][99][100][101][102] (Figure 3).…”

Section: Mofs Based On Y and Lns (Group 3 Metals)mentioning

confidence: 99%

Metal–Organic Frameworks Based on Group 3 and 4 Metals

et al. 2020

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Metal-organic frameworks (MOFs), a class of porous crystalline framework materials, are linked by strong bonds between inorganic and organic building blocks. [1-3] In the past two decades, MOFs have rapidly grown as a star material due to their exceptional performance in areas such as storage, separation and catalysis. [4] The outstanding performance of MOFs in applications benefits from their intrinsically porous structures and highly tunable pore environment. [5-7] The creation and modification of pore space with optimized size, functionality and diversity can be precisely tuned at the molecular level by rationally designing building blocks and synthetic procedures. [8,9] The diversity of MOFs can be enriched by expanding the library of organic linkers with varying lengths, geometries, and functional groups. [10] Additionally, very diverse metal cations are applied to MOF synthesis, ranging from monovalent (Ag + , Cu + , etc.), divalent (Mg 2+ , Fe 2+ , Co 2+ , Ni 2+ , etc.), trivalent (Al 3+ , Sc 3+ , V 3+ , Cr 3+ , etc.), to tetravalent (Ti 4+ , Zr 4+ , Hf 4+ , etc.) cations. [11] In this review, we mainly focus on MOFs with group 3 and 4 metals, including Y, lanthanides (Ln, from La to Lu), actinides (An, from Ac to Lr), Ti, and Zr (Figure 1). Group 3 metal cations are generally found in the oxidation state of +3 in the MOF structures, while group 4 metal cations mainly exist in the oxidation state of +4, leading to the formation of much stronger coordination bonds with carboxylates. [12] Therefore, group 4 metal-based MOFs (M IV-MOFs) generally have enhanced stability compared with MOFs constructed from metals of group 3 and other groups. This series of MOFs stands out because the involved metals can generally coordinate with carboxylates to form frameworks with strong coordination bonds, according to the Pearson's hard/soft acid/base principle, where group 3 and 4 metal cations are regarded as hard acids while carboxylate ligands are hard bases. [11] One remarkable feature of MOFs with group 3 and 4 metals is that they generally can form phases containing M 6 O 8 (M = Y, Ln, An, Zr and Hf) clusters, regardless of their atomic numbers, charges and radius. This series of M 6-based MOFs is best represented by UiO series such as UiO-66 with fcu topology. [13] Under different synthetic conditions, UiO-66(M, M = An, Zr and Hf) constructed from [M 6 (μ 3-O) 4 (μ 3-OH) 4 ] clusters and linear carboxylates can be obtained, while UiO-66(M, M = Y, Ln) is assembled from Metal-organic frameworks (MOFs) based on group 3 and 4 metals are considered as the most promising MOFs for varying practical applications including water adsorption, carbon conversion, and biomedical applications. The relatively strong coordination bonds and versatile coordination modes within these MOFs endow the framework with high chemical stability, diverse structures and topologies, and interesting properties and functions. Herein, the significant progress made on this series of MOFs since 2018 is summarized and an update on the current status an...

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“…In the present day, the most attention of scientific investigations is put on the synthesis and structural characterisation of new MOFs, analysis of their physical and chemical properties and post-synthetic modification. MOFs can be used in gas storage and separation [9][10][11][12], serve as catalysts [13][14][15][16][17] and luminescent materials [18][19][20][21]. However, today only about 14 MOFs are commercially available [22], mostly produced by Baden Aniline and Soda Factory (BASF), Germany.…”

Section: Introductionmentioning

confidence: 99%

Investigation of upconversion phenomenon in Y1-xLn3+x(BTC)(DMF)2(H2O) and Y0.8-xYb0.2Ln3+x(BTC)(DMF)2(H2O) metal organic frameworks

Laurikenas¹,

Kareiva²

2021

chemija

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In this study, Y1-xLn3+x(BTC)(DMF)2(H2O) and Y0.8-xYb0.2Ln3+x(BTC)(DMF)2(H2O) metal organic frameworks (MOFs), which structure included lanthanide ions, Ln3+ (Er3+, Ho3+, Tm3+, Yb3+, Nd3+), suitable for monitoring the upconversion phenomenon, have been synthesised. For this purpose the precursor of the organic moiety, benzene-1,3,5-tricarboxylic acid (BTC), as one of the simplest and very frequently cited carboxylic acid analogues in MOF syntheses, has been selected. By characterising upconversion properties of new MOFs it was determined that only Er3+ can be used as an activator for one centre luminescence upconversion by a ground state absorption/ excited-state absorption (GSA/ESA) mechanism, while with Yb3+, Ho3+, Tm3+ and Nd3+ ions the upconversion was not observed. It was also established that BTC cannot initiate triplet–triplet annihilation upconversion (TTA-UC) as this mechanism sensitizer. Yb3+–Er3+ and Yb3+–Ho3+ ion pairs as a sensitizeractivator were suitable for two-centre luminescence upconversion by a GSA/ excited-state upconversion (GSA/ESU) mechanism. A pair of Yb3+–Tm3+, contrary as shown in the literature review, does not exhibit upconversion properties in the synthesised MOFs.

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Synthesis and characterization of Tb3+ and Eu3+ metal-organic frameworks with TFBDC2− linkers

Cited by 8 publications

References 16 publications

On the Synthesis and Characterization of Lanthanide Metal-Organic Frameworks

On the Synthesis and Characterization of Lanthanide Metal-Organic Frameworks

Metal–Organic Frameworks Based on Group 3 and 4 Metals

Investigation of upconversion phenomenon in Y1-xLn3+x(BTC)(DMF)2(H2O) and Y0.8-xYb0.2Ln3+x(BTC)(DMF)2(H2O) metal organic frameworks

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