scholarly journals Synthesis of luminescent thorium-based metal–organic frameworks with 1,2,4,5-tetrakis(4-carboxyphenyl)benzene

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17431-17436
Author(s):  
Ting Yu ◽  
Zheng-hua Qian ◽  
Lin Li ◽  
Xiao-ling Wu ◽  
Hui He ◽  
...  
Keyword(s):  
Metal Salt ◽  
Metal Organic Frameworks ◽  
Reaction System ◽  
Similar Reaction ◽  
Metal Organic

Three new thorium-based MOFs based on 1,2,4,5-tetrakis(4-carboxyphenyl)benzene (H4TCPB) were obtained under a similar reaction system (metal salt, ligand, solvent, and acid are the same).

Tuning the Formations of Metal–Organic Frameworks by Modification of Ratio of Reactant, Acidity of Reaction System, and Use of a Secondary Ligand

2011 ◽  
Vol 12 (1) ◽  
pp. 281-288 ◽  
Author(s):  
Qian Gao ◽  
Ya-Bo Xie ◽  
Jian-Rong Li ◽  
Da-Qiang Yuan ◽  
Audrey A. Yakovenko ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Reaction System ◽  
Metal Organic ◽  
Secondary Ligand

scholarly journals Synthesis and post-synthetic modification of metal-organic frameworks

2014 ◽  
Vol 70 (a1) ◽  
pp. C1222-C1222
Author(s):  
Andrew Burrows
Keyword(s):  
Carbon Capture ◽  
Metal Salt ◽  
Diazonium Salt ◽  
Metal Organic Frameworks ◽  
Biologically Active ◽  
Drug Molecules ◽  
Wide Range ◽  
Recent Developments ◽  
Metal Organic ◽  
Covalent Modifications

Metal-organic frameworks (MOFs) are currently attracting considerable interest due to their porosity, and the exploitation of this in a wide range of applications as diverse as hydrogen storage, carbon capture, catalysis and drug delivery. Here we present our recent work on the preparation of functionalised MOFs through two post-synthetic modification protocols. We have used a range of organic transformations including oxidations and tandem modifications involving either diazonium salt formation or reductive amination to undertake covalent modifications of reactive 'tag' groups on the linkers.[1] In addition, we have used a post-synthetic exchange approach to substitute one linker with another. We have compared the MOFs prepared post-synthetically with those that can be accessed by direct combination of metal salt and functionalised linker. We also report on the synthesis and structure of mixed-component MOFs, in which two or more linking ligands have the same structural role.[2] We reveal the role of solubility in the uneven distribution of the ligands in the crystals, and illustrate how the ratio of ligands used in the synthesis can affect the pore structure. Finally we present recent developments in the synthesis of MOFs containing the biologically active molecule deferiprone, and show how this can be released from MOF.[3] This illustrates the potential of MOFs to act as reservoirs for drug molecules.

scholarly journals Gallate-Based Metal–Organic Frameworks, a New Family of Hybrid Materials and Their Applications: A Review

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1006
Author(s):  
Marhaina Ismail ◽  
Mohamad Azmi Bustam ◽  
Yin Fong Yeong
Keyword(s):  
Gallic Acid ◽  
Hybrid Materials ◽  
Gas Adsorption ◽  
Metal Salt ◽  
Metal Organic Frameworks ◽  
Industrial Applications ◽  
New Family ◽  
Alternative Materials ◽  
Metal Organic ◽  
Future Potential

Within three decades of fundamental findings in research on metal–organic frameworks (MOFs), a new family of hybrid materials known as gallate-based MOFs, consisting of metal salt and gallic acid, have been of great interest. Due to the fact that gallic acid is acknowledged to display a range of bioactivities, gallate-based MOFs have been initially expended in biomedical applications. Recently, gallate-based MOFs have been gradually acting as new alternative materials in chemical industrial applications, in which they were first reported for the adsorptive separation of light hydrocarbon separations. However, to date, none of them have been related to CO2/CH4 separation. These porous materials have a bright future and can be kept in development for variety of applications in order to be applied in real industrial practices. Therefore, this circumstance creates a new opportunity to concentrate more on studies in CO2/CH4 applications by using porous material gallate-based MOFs. This review includes the description of recent gallate-based MOFs that presented remarkable properties in biomedical areas and gas adsorption and separation, as well as their future potential application.

Seven new metal–organic frameworks assembled from semi-rigid polycarboxylate and auxiliary N-donor ligands: syntheses, structures and properties

2020 ◽  
Vol 76 (6) ◽  
pp. 1001-1017
Author(s):  
Xiaoyu Zhang ◽  
Qinglin Yang ◽  
Meng Yun ◽  
Changdai Si ◽  
Ning An ◽  
...  
Keyword(s):  
Phthalic Acid ◽  
Metal Salt ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Donor Ligands ◽  
Topological Network ◽  
Structures And Properties ◽  
Metal Organic ◽  
3D Framework ◽  
Point Symbol

Seven new metal–organic frameworks (MOFs), namely, [Zn2(L 1)(H2O)3] n (1), [Zn2(L 1)(dib)(H2O)2] n (2), {[Zn2(L 1)(4,4′-bipy)(H2O)2]·H2O} n (3), [Cd2(L 1)(1,10-phen)] n (4), [Ni2(HL 1)(4,4′-bipy)(μ3-OH)(μ2-H2O)] n (5), {[Co4(L 1)(4,4′-bibp)3]·(4,4′-bibp)3} n (6), and [Co2(L 2)(4,4′-bibp)2(H2O)] n (7), where H4 L 1 and H4 L 2 are semi-rigid 3-(3,5-dicarboxylphenoxy)phthalic acid and 4-(3,5-dicarboxylphenoxy)phthalic acid, respectively, and 4,4′-bipy is 4,4′-bipyridine, dib is 1,4-bis(1H-imidazol-1-yl)benzene, 1,10-phen is 1,10-phenanthroline and 4,4′-bipb is 1,4-bis(pyridin-4-yl)benzene, have been prepared under solvothermal conditions with ZnII, CdII, CoII and NiII ions in the presence of auxiliary N-donor ligands. The crystal structures and photoluminescence and magnetic properties of these compounds have been investigated. Compound 1 displays a 3,4,6-connected two-dimensional (2D) topology with a Schläfli symbol of (42.5)2(43.52.7)(45.56.63)2, and the 2D structure was further assembled to form a three-dimensional (3D) framework by intermolecular O—H...O hydrogen bonds. Compound 2 features a novel 3,3,4-connected structure and the point symbol is (4.102)(4.6.84)(62.8). Compound 3 exhibits a 3,4,6-connected 3-nodal net having a 3,4,6 T53 type topology, with the point symbol (4.62)2(42.64)2(42.68.82.103). Compound 4 shows a 2D→3D supramolecular structure formed by π–π stacking interactions. Compound 5 possesses a 3D framework with a tfz-d net topology. Compounds 6 and 7 are constructed from the same auxiliary ligand and metal salt at the same temperature, but with different main ligands and exhibiting different topologies. Compound 6 presents a 3D 4,6-connected topological network with a Schläfli symbol of (3.44.6)(32.44.56.63), while compound 7 has a 3D topological network with a Schläfli symbol of (412.616). Magnetic analyses indicate that compounds 5 and 7 show weak antiferromagnetic interactions.

scholarly journals A facile strategy towards a highly accessible and hydrostable MOF-phase within hybrid polyHIPEs through in situ metal-oxide recrystallization

2017 ◽  
Vol 5 (5) ◽  
pp. 1967-1971 ◽  
Author(s):  
Matjaž Mazaj ◽  
Nataša Zabukovec Logar ◽  
Ema Žagar ◽  
Sebastijan Kovačič
Keyword(s):  
Metal Oxide ◽  
Hybrid Materials ◽  
Zno Nanoparticles ◽  
Metal Salt ◽  
Metal Organic Frameworks ◽  
Secondary Recrystallization ◽  
Metal Organic

HKUST-1(Cu) and MOF-5(Zn)@polyHIPE hybrid materials were prepared using a metal salt-free technique, wherein metal–organic frameworks were in situ generated from the CuO- and ZnO-nanoparticles through secondary recrystallization.

Metal-Organic Frameworks

2021 ◽  
Author(s):  
Lars Öhrström ◽  
Francoise M. Amombo Noa
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic

Substrate templated synthesis of single-phase and uniform Zr-porphyrin-based metal–organic frameworks

2020 ◽  
Vol 7 (1) ◽  
pp. 221-231
Author(s):  
Seong Won Hong ◽  
Ju Won Paik ◽  
Dongju Seo ◽  
Jae-Min Oh ◽  
Young Kyu Jeong ◽  
...  
Keyword(s):  
Chemical Bath Deposition ◽  
Single Phase ◽  
Metal Organic Frameworks ◽  
Templated Synthesis ◽  
Pore Structures ◽  
Phase Pure ◽  
Metal Organic ◽  
Cbd Method

We successfully demonstrate that the chemical bath deposition (CBD) method is a versatile method for synthesizing phase-pure and uniform MOFs by controlling their nucleation stages and pore structures.

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