Lanthanide Coordination Polymers and MOFs based on the Dicyanodihydridoborate Anion

Zottnick, Sven H.; Daul, Wiebke G.; Kerpen, Christoph; Finze, Maik; Müller‐Buschbaum, Klaus

doi:10.1002/chem.201802627

Cited by 14 publications

(7 citation statements)

References 72 publications

(88 reference statements)

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“…Very recently, lanthanide coordination polymers and metal‐organic frameworks have been described and their luminescence properties have been studied …”

Section: Cyanohydridoborateskt[bhn(cn)4–n] (N = 1–3)mentioning

confidence: 99%

Cyanoborates

Ignat’ev

Finze

2019

Eur J Inorg Chem

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Cyanoborate chemistry has emerged to an important topic during the last two decades, beginning with two independent reports on the successful synthesis of the tetracyanoborate anion [B(CN) 4 ]in 2000. A wealth of cyanoborate anions with different substituents in addition to CN group(s) bonded to boron, i.e. hydrogen, halogen, aryl, alkenyl, alkyl, perfluoroalkyl, and alkoxy, have been developed, which enable the tuning of properties of compounds and materials based on them. The readily accessible alkali metal cyanoborates are convenient starting materials for the preparation of cyanoborates with various organic, inorganic, and metal cations as well as cyanoborate coordination compounds. A focus has been on low-[a] Julius-Maximilians-Universität Würzburg,

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“…Very recently, lanthanide coordination polymers and metal‐organic frameworks have been described and their luminescence properties have been studied …”

Section: Cyanohydridoborateskt[bhn(cn)4–n] (N = 1–3)mentioning

confidence: 99%

Cyanoborates

Ignat’ev

Finze

2019

Eur J Inorg Chem

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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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“…It is well known that ligand-sensitized lanthanide(III) complexes usually possess characteristic photoluminescence properties. [14][15][16][17]37,38 Hence the solid-state uorescence spectra of complexes 1-6 are investigated. The emission spectra of 1, 5 and 6 at room temperature are shown in Fig.…”

Section: Photoluminescent Propertiesmentioning

confidence: 99%