scholarly journals Hydrogen-Bonding Linkers Yield a Large-Pore, Non-Catenated, Metal-Organic Framework with pcu Topology

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 697 ◽  
Author(s):  
Mohammad S. Yazdanparast ◽  
Victor W. Day ◽  
Tendai Gadzikwa
Keyword(s):  
Hydrogen Bonding ◽  
Pore Volume ◽  
Reliable Method ◽  
Metal Organic Framework ◽  
Low Density ◽  
Paddle Wheel ◽  
Accessible Volume ◽  
New Material ◽  
Metal Organic ◽  
Organic Framework

Pillared paddle-wheel-based metal-organic framework (MOF) materials are an attractive target as they offer a reliable method for constructing well-defined, multifunctional materials. A drawback of these materials, which has limited their application, is their tendency to form catenated frameworks with little accessible volume. To eliminate this disadvantage, it is necessary to investigate strategies for constructing non-catenated pillared paddle-wheel MOFs. Hydrogen-bonding substituents on linkers have been postulated to prevent catenation in certain frameworks and, in this work, we present a new MOF to further bolster this theory. Using 2,2′-diamino-[1,1′-biphenyl]-4,4′-dicarboxylic acid, BPDC-(NH2)2, linkers and dipyridyl glycol, DPG, pillars, we assembled a MOF with pcu topology. The new material is non-catenated, exhibiting large accessible pores and low density. To the best of our knowledge, this material constitutes the pcu framework with the largest pore volume and lowest density. We attribute the lack of catenation to the presence of H-bonding substituents on both linkers.

scholarly journals Theoretical hydrogen bonding calculations and proton conduction for Eu(iii)-based metal–organic framework

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11495-11499
Author(s):  
Lu Feng ◽  
Tian-Yu Zeng ◽  
Hao-Bo Hou ◽  
Hong Zhou ◽  
Jian Tian
Keyword(s):  
Hydrogen Bonding ◽  
Theoretical Calculation ◽  
Proton Transport ◽  
Metal Organic Framework ◽  
Proton Conduction ◽  
Transport Channel ◽  
Proton Conducting ◽  
Metal Organic ◽  
Organic Framework

A water-mediated proton-conducting Eu(iii)-MOF has been synthesized, which provides a stable proton transport channel that was confirmed by theoretical calculation.

Preferential adsorption of ethane over ethylene on a Zr-based metal-organic framework: impacts of C-H···N hydrogen bonding

2021 ◽  
Author(s):  
Yaping Zhang ◽  
Daofei Lv ◽  
Jiayu Chen ◽  
Zewei Liu ◽  
Chongxiong Duan ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Surface Area ◽  
Energy Efficient ◽  
Metal Organic Framework ◽  
Bet Surface Area ◽  
Preferential Adsorption ◽  
Metal Organic ◽  
Organic Framework

The separation of ethylene/ethane mixture using energy-efficient technologies is important but challenging. Here, we prepared a Zr-based metal-organic framework (MOF-545) possessing high Brunauer-Emmett-Teller (BET) surface area of 2265.4 m2/g, and...

High Proton Conduction at above 100 °C Mediated by Hydrogen Bonding in a Lanthanide Metal–Organic Framework

2014 ◽  
Vol 136 (35) ◽  
pp. 12444-12449 ◽  
Author(s):  
Qun Tang ◽  
Yiwei Liu ◽  
Shuxia Liu ◽  
Danfeng He ◽  
Jun Miao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Metal Organic Framework ◽  
Proton Conduction ◽  
High Proton ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Framework

Ligand-oriented assembly of a porous metal–organic framework by [CuI4I4] clusters and paddle-wheel [CuII2(COO)4(H2O)2] subunits

CrystEngComm ◽  
2016 ◽  
Vol 18 (43) ◽  
pp. 8362-8365 ◽  
Author(s):  
Guoming Wang ◽  
Zhenzhen Xue ◽  
Jie Pan ◽  
Li Wei ◽  
Songde Han ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Porous Metal ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Organic Framework

A zinc(II) metal–organic framework with a novel topology formed from 4,4′,4′′-nitrilotribenzoate and 4,4′-bipyridine ligands

2015 ◽  
Vol 71 (9) ◽  
pp. 799-803 ◽  
Author(s):  
Meng Zhao ◽  
Jian Su ◽  
Jun Zhang ◽  
Jie-Ying Wu ◽  
Yu-Peng Tian
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Solvothermal Method ◽  
Metal Organic Framework ◽  
Topological Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework with a novel topology, poly[sesqui(μ2-4,4′-bipyridine)bis(dimethylformamide)bis(μ4-4,4′,4′′-nitrilotribenzoato)trizinc(II)], [Zn3(C21H12NO6)2(C10H8N2)1.5(C3H7NO)2]n, was obtained by the solvothermal method using 4,4′,4′′-nitrilotribenzoic acid and 4,4′-bipyridine (bipy). The structure, determined by single-crystal X-ray diffraction analysis, possesses three kinds of crystallographically independent ZnIIcations, as well as binuclear Zn2(COO)4(bipy)2paddle-wheel clusters, and can be reduced to a novel topology of a (3,3,6)-connected 3-nodal net, with the Schläfli symbol {5.62}4{52.6}4{58.87} according to the topological analysis.

scholarly journals A fluorescent paramagnetic Mn metal–organic framework based on semi-rigid pyrene tetracarboxylic acid: sensing of solvent polarity and explosive nitroaromatics

IUCrJ ◽  
2015 ◽  
Vol 2 (5) ◽  
pp. 552-562 ◽  
Author(s):  
Alankriti Bajpai ◽  
Arindam Mukhopadhyay ◽  
Manchugondanahalli Shivakumar Krishna ◽  
Savitha Govardhan ◽  
Jarugu Narasimha Moorthy
Keyword(s):  
Metal Ions ◽  
Metal Organic Framework ◽  
Energy Charge ◽  
Fluorescence Emission ◽  
Solvent Polarity ◽  
Accessible Volume ◽  
Polarity Parameter ◽  
Metal Organic ◽  
Paramagnetic Metal ◽  
Organic Framework

An Mn metal–organic framework (Mn-MOF), Mn-L, based on a pyrene-tetraacid linker (H4L), displays a respectable fluorescence quantum yield of 8.3% in spite of the presence of the paramagnetic metal ions, due presumably to fixation of the metal ions in geometries that do not allow complete energy/charge-transfer quenching. Remarkably, the porous Mn-LMOF with ∼25% solvent-accessible volume exhibits a heretofore unprecedented solvent-dependent fluorescence emission maximum, permitting its use as a probe of solvent polarity; the emission maxima in different solvents correlate excellently with Reichardt's solvent polarity parameter (ETN). Further, the applicability of Mn-Lto the sensing of nitroaromaticsviafluorescence quenching is demonstrated; the detection limit for TNT is shown to be 125 p.p.m. The results bring out the fact that MOFs based on paramagnetic metal ions can indeed find application when the quenching mechanisms are attenuated by certain geometries of the organic linkers of the MOF.

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