A Chromium Terephthalate-Based Solid with Unusually Large Pore Volumes and Surface Area

Férey, Gérard; Mellot‐Draznieks, Caroline; Serre, Christian; Millange, Franck; Dutour, Julien; Surblé, Suzy; Margiolaki, I.

doi:10.1126/science.1116275

Cited by 4,838 publications

(3,361 citation statements)

References 14 publications

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“…The 3D framework of 1 is assembled by the unique nano‐sized [Cu 30 ] cages ( Figure 1 b), which are constructed from 15 Cu 2 (O 2 CR) 4 paddlewheel units and BCP linkers. The shape of [Cu 30 ] cage looks like a distorted censer (Figure S1, Supporting Information), which is distinctive to the reported polyhedral/spherical cages in classic MOFs, for instance, eight [Zn 4 O] units as vertexes construct a cubic cage in MOF‐5, 24 Zn atoms and 48 methylimidazole linkers form a spherical cage in ZIF‐8, etc 12, 13, 14, 15, 16, 17, 18, 19, 20. Each [Cu 30 ] cage can be divided into two subcages, big cage A and small cage B (Figure 1b) to describe in details.…”

Section: Resultsmentioning

confidence: 73%

A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines

et al. 2016

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Based on a novel ligand 5‐(2,6‐bis(4‐carboxyphenyl)pyridin‐4‐yl)isophthalic acid (H4BCP) with large skeletons, a unique porous framework {[Cu2(BCP)(H2O)2]·3DMF}n (1) assembled by nano‐sized and censer‐like [Cu30] cages is successfully obtained and structurally characterized. In 1, the large 1D channel in frameworks and window size in the nanocages can enrich methylene blue and capture CO2, exhibiting the promising applications in environmental protection. More importantly, the explorations on the cycloaddition reaction of CO2 and aziridines with various substituents suggest that 1 can serve as an efficient heterogeneous catalyst for CO2 conversion with aziridines in a solvent‐free system, which can be reused at least ten times without any obvious loss in catalytic activity. This is the first example of metal–organic framework (MOF)‐based catalysts in converting CO2 into high‐value oxazolidinones through activating aziridines and CO2, further extending the applications of MOFs materials in catalysis.

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Section: Resultsmentioning

confidence: 73%

A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines

et al. 2016

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“…Compared with FT-IR spectra of H 2 BDC, NH 2 -BDC and NO 2 -BDC ( Fig. 2a-c), all the bands of protonated carboxylic groups at around 1,710 cm −1 disappear in these three MOFs, indicating that all of the carboxyl groups were coordinated with Cr 3+ [28]. The IR spectra of NH 2 -MIL-101(Cr) show the vibrational bands of the amino-groups at around 3,337 and 3,467 cm −1 [29,30].…”

Section: Preparation Of Nanoscale Mofsmentioning

confidence: 87%

Tuning optical properties of MOF-based thin films by changing the ligands of MOFs

et al. 2017

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The preparation and development of novel optical thin films are of great importance to functional optical and opto-electric components requiring a low refractive index. In this study, a typical metal-organic framework (MOF), MIL-101(Cr), is selected as the research model. The corresponding MOF nanoparticles are prepared by a hydrothermal method and the optical thin films are successfully prepared by spincoating. The optical properties of the corresponding MOF thin films are controlled by changing the type of functional groups on the benzene ring of the ligand (terephthalic acid) on MOFs. The functional groups are hydrogen atoms (H), electron donating groups (-NH 2, -OH) and electron withdrawing groups (-NO 2, -(NO 2 ) 2 or F 4 ), respectively. It is found that the effective refractive index (n eff ) of MOF thin films decreases along with the increasing voids among MOF nanoparticles. In addition, the extinction coefficient (k) increases with the addition of electron donating groups, and decreases with the addition of electron withdrawing groups. Among the MOFs used in this study, the n eff of NO 2 -MIL-101(Cr) containing electron withdrawing groups is as low as~1.2, and value of k is particularly low, which suggests its potential application in antireflective devices. In addition, the intrinsic refractive index (n dense ) of the dense MOF materials evaluated according to their porosity increases with the number of the functional groups, and the n dense of the two nitro-substituted MOFs is greater than that of the single nitro-substituted one, and the latter is bigger than that of hydroxyl-substituted one, which is close to that of amino-functionalized one. The diversity of ligands in MOFs makes them a promising new generation of optical materials.

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“…34). [90][91][92][93][94][95][96][97][98][99][100] Thus, there are six carboxylate points of extension. While most examples of this SBU contain one type of metal, several mixed metal examples are known.…”

Section: Six Points Of Extensionmentioning

confidence: 99%

Secondary building units, nets and bonding in the chemistry of metal–organic frameworks

et al. 2009

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This critical review presents a comprehensive study of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) towards construction and synthesis of metal-organic frameworks (MOFs). We describe the geometries of 131 SBUs, their connectivity and composition. This contribution presents a comprehensive list of the wide variety of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) in the construction and synthesis of metal-organic frameworks. The SBUs discussed here were obtained from a search of molecules and extended structures archived in the Cambridge Structure Database (CSD, version 5.28, January 2007) which included only crystals containing metal carboxylate linkages (241 references).

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A Chromium Terephthalate-Based Solid with Unusually Large Pore Volumes and Surface Area

Cited by 4,838 publications

References 14 publications

A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines

A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines

Tuning optical properties of MOF-based thin films by changing the ligands of MOFs

Secondary building units, nets and bonding in the chemistry of metal–organic frameworks

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A Chromium Terephthalate-Based Solid with Unusually Large Pore Volumes and Surface Area

Cited by 4,838 publications

References 14 publications

A Porous Metal–Organic Framework Assembled by [Cu30] Nanocages: Serving as Recyclable Catalysts for CO2 Fixation with Aziridines

A Porous Metal–Organic Framework Assembled by [Cu30] Nanocages: Serving as Recyclable Catalysts for CO2 Fixation with Aziridines

Tuning optical properties of MOF-based thin films by changing the ligands of MOFs

Secondary building units, nets and bonding in the chemistry of metal–organic frameworks

Contact Info

Product

Resources

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A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines

A Porous Metal–Organic Framework Assembled by [Cu₃₀] Nanocages: Serving as Recyclable Catalysts for CO₂ Fixation with Aziridines