Eight Two-Dimensional and Three-Dimensional Metal−Organic Frameworks Based on a Flexible Tetrakis(imidazole) Ligand: Synthesis, Topological Structures, and Photoluminescent Properties

2010 ◽  
Vol 10 (4) ◽  
pp. 1946-1959 ◽  
Author(s):  
Hong-Ye Bai ◽  
Jian-Fang Ma ◽  
Jin Yang ◽  
Lai-Ping Zhang ◽  
Ji-Cheng Ma ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Topological Structures ◽  
Imidazole Ligand ◽  
Metal Organic ◽  
Ligand Synthesis

Zn/Mn–MOFs with `S-shaped' packing modes

2014 ◽  
Vol 70 (5) ◽  
pp. 502-507
Author(s):  
Hong-Jie Fan ◽  
Qian-Qian Xu ◽  
Tie-Zhen Ren ◽  
Xiang-Ying Xing ◽  
Kirsten E. Christensen
Keyword(s):  
Metal Ion ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
Dimensional Network ◽  
Metal Organic

Two novel polymers exhibiting metal–organic frameworks (MOFs) have been synthesized by the combination of a metal ion with a benzene-1,3,5-tricarboxylate ligand (BTC) and 1,10-phenanthroline (phen) under hydrothermal conditions. The first compound, poly[[(μ4-benzene-1,3,5-tricarboxylato-κ4 O:O′:O′′:O′′′)(μ-hydroxido-κ2 O:O)bis(1,10-phenanthroline-κ2 N,N′)dizinc(II)] 0.32-hydrate], {[Zn2(C9H3O6)(OH)(C12H8N2)2]·0.32H2O} n , denoted Zn–MOF, forms a two-dimensional network in which a binuclear Zn2 cluster serves as a 3-connecting node; the BTC trianion also acts as a 3-connecting centre. The overall topology is that of a 63 net. The phen ligands serve as appendages to the network and interdigitate with phen ligands belonging to adjacent parallel sheets. The second compound, poly[[(μ6-benzene-1,3,5-tricarboxylato-κ7 O 1,O 1′:O 1:O 3:O 3′:O 5:O 5′)(μ3-hydroxido-κ2 O:O:O)(1,10-phenanthroline-κ2 N,N′)dimanganese(II)] 1.26-hydrate], {[Mn2(C9H3O6)(OH)(C12H8N2)]·1.26H2O} n , denoted Mn–MOF, exists as a three-dimensional network in which an Mn4 cluster serves as a 6-connecting unit, while the BTC trianion again plays the role of a 3-connecting centre. The overall topology is that of the rutile net. Phen ligands act as appendages to the network and form the `S-shaped' packing mode.

Fluoride sensing performance of fluorescent NH2-MIL-53(Al): 2D Nanosheets vs. 3D Bulk

2021 ◽  
Author(s):  
Zixuan Li ◽  
Deyi Zhan ◽  
Abdul Saeed ◽  
Nanjing Zhao ◽  
Junfeng Wang ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Metal Organic ◽  
2D Nanosheets ◽  
Fluoride Sensing ◽  
Sensing Performance

Due to the ultra-thin morphology, larger specific surface area and more exposed active sites, two-dimensional (2D) metal-organic frameworks (MOFs) nanosheets can break the limitations of three-dimensional (3D) MOFs in sensitivity,...

Two new NiII and ZnII metal–organic frameworks of glutarate and 1,4-bis[(2-methyl-1H-imidazol-1-yl)methyl]benzene ligands: syntheses, structures and luminescence sensing properties

2020 ◽  
Vol 76 (2) ◽  
pp. 148-158
Author(s):  
Fang-Hua Zhao ◽  
Zhong-Lin Li ◽  
Shu-Fang Zhang ◽  
Jian-Hui Han ◽  
Mei Zhang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Metal Organic ◽  
3D Framework ◽  
Methyl Benzene

Two new metal–organic frameworks (MOFs), namely, three-dimensional poly[diaquabis{μ2-1,4-bis[(2-methyl-1H-imidazol-1-yl)methyl]benzene}bis(μ2-glutarato)dinickel(II)] monohydrate], {[Ni2(C5H6O4)2(C16H18N4)2(H2O)2]·H2O} n or {[Ni2(Glu)2(1,4-mbix)2(H2O)2]·H2O} n , (I), and two-dimensional poly[[{μ2-1,4-bis[(2-methyl-1H-imidazol-1-yl)methyl]benzene}(μ2-glutarato)zinc(II)] tetrahydrate], {[Zn(C5H6O4)(C16H18N4)]·4H2O} n or {[Zn(Glu)(1,4-mbix)]·4H2O} n (II), have been synthesized hydrothermally using glutarate (Glu2−) mixed with 1,4-bis[(2-methyl-1H-imidazol-1-yl)methyl]benzene (1,4-mbix), and characterized by single-crystal X-ray diffraction, IR and UV–Vis spectroscopy, powder X-ray diffraction, and thermogravimetric and photoluminescence analyses. NiII MOF (I) shows a 4-connected 3D framework with point symbol 66, but is not a typical dia network. ZnII MOF (II) displays a two-dimensional 44-sql network with one-dimensional water chains penetrating the grids along the c direction. The solid-state photoluminescence analysis of (II) was performed at room temperature and the MOF exhibits highly selective sensing toward Fe3+ and Cr2O7 2− ions in aqueous solution.

scholarly journals Simultaneous interlayer and intralayer space control in two-dimensional metal−organic frameworks for acetylene/ethylene separation

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jin Shen ◽  
Xin He ◽  
Tian Ke ◽  
Rajamani Krishna ◽  
Jasper M. van Baten ◽  
...  
Keyword(s):  
High Selectivity ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Stacking Pattern ◽  
Layer Stacking ◽  
Metal Organic ◽  
Fine Regulation ◽  
Breakthrough Experiments

AbstractThree-dimensional metal−organic frameworks (MOFs) are cutting-edge materials in the adsorptive removal of trace gases due to the availability of abundant pores with specific chemistry. However, the development of ideal adsorbents combining high adsorption capacity with high selectivity and stability remains challenging. Here we demonstrate a strategy to design adsorbents that utilizes the tunability of interlayer and intralayer space of two-dimensional fluorinated MOFs for capturing acetylene from ethylene. Validated by X-ray diffraction and modeling, a systematic variation of linker atom oxidation state enables fine regulation of layer stacking pattern and linker conformation, which affords a strong interlayer trapping of molecules along with cooperative intralayer binding. The resultant robust materials (ZUL-100 and ZUL-200) exhibit benchmark capacity in the pressure range of 0.001–0.05 bar with high selectivity. Their efficiency in acetylene/ethylene separation is confirmed by breakthrough experiments, giving excellent ethylene productivities (121 mmol/g from 1/99 mixture, 99.9999%), even when cycled under moist conditions.

Controlled assembly of zero-, one- and two-dimensional metal-organic frameworks involving in situ ligand synthesis under different reaction pH

Polyhedron ◽  
2008 ◽  
Vol 27 (11) ◽  
pp. 2327-2336 ◽  
Author(s):  
Guang-Xiang Liu ◽  
Rong-Yi Huang ◽  
Heng Xu ◽  
Xue-Jun Kong ◽  
Liang-Fang Huang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
Controlled Assembly ◽  
Metal Organic ◽  
Ligand Synthesis

Exchange coupled Co(ii) based layered and porous metal–organic frameworks: structural diversity, gas adsorption, and magnetic properties

2020 ◽  
Vol 49 (13) ◽  
pp. 4012-4021 ◽  
Author(s):  
Ajit Kumar Kharwar ◽  
Sanjit Konar
Keyword(s):  
Magnetic Properties ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Porous Metal ◽  
Structural Diversity ◽  
Two Dimensional ◽  
Metal Organic

A co-operative ligand approach leads to beautiful two-dimensional and three-dimensional architectures with interesting magnetic properties.

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