scholarly journals Fluoroarene Separations in Metal–Organic Frameworks with Two Proximal Mg2+ Coordination Sites

2021 ◽  
Vol 143 (4) ◽  
pp. 1948-1958
Author(s):  
Mary E. Zick ◽  
Jung-Hoon Lee ◽  
Miguel I. Gonzalez ◽  
Ever O. Velasquez ◽  
Adam A. Uliana ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Coordination Sites ◽  
Metal Organic

scholarly journals Enhancing the stability and porosity of penetrated metal–organic frameworks through the insertion of coordination sites

2018 ◽  
Vol 9 (4) ◽  
pp. 950-955 ◽  
Author(s):  
Rui Feng ◽  
Yan-Yuan Jia ◽  
Zhao-Yang Li ◽  
Ze Chang ◽  
Xian-He Bu
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Structure And Properties ◽  
Coordination Sites ◽  
Metal Organic ◽  
The Stability ◽  
Enhanced Stability ◽  
Organic Framework

Guided by the insertion of coordination sites within ligands, an interpenetrated metal–organic framework (MOFs) NKU-112 and a self-penetrated framework NKU-113 were obtained. The enhanced stability and porosity of NKU-113 prove the efficiency of the method for the structure and properties modulation of penetrated MOFs.

Two Copper(II) Metal–Organic Frameworks with Nanoporous Channels and Vacant Coordination Sites

2014 ◽  
Vol 14 (6) ◽  
pp. 2866-2872 ◽  
Author(s):  
Yumei Huang ◽  
Bingguang Zhang ◽  
Jingui Duan ◽  
Wenlong Liu ◽  
Xiaofang Zheng ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Coordination Sites ◽  
Metal Organic

RESEARCH ON THE ADSORPTION OF O2 IN METAL–ORGANIC FRAMEWORKS WITH OPEN MANGANESE(II) COORDINATION SITES

2013 ◽  
Vol 06 (01) ◽  
pp. 1350004 ◽  
Author(s):  
WEIKE WANG ◽  
JIANGFENG YANG ◽  
LIBO LI ◽  
JINPING LI
Keyword(s):  
Electron Density ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Gravimetric Method ◽  
Oxygen Binding ◽  
Coordination Sites ◽  
Irreversible Oxidation ◽  
Different Temperatures ◽  
Metal Organic ◽  
Acid Compound

Three different metal–organic frameworks (MOFs), specifically Mn2 (dobdc)(DMF)4 ( H2 dobdc=[2,5-dihydroxyterephthalic acid]; compound (1), Mn5 ( btac )4(μ3- OH )2( EtOH )2⋅ DMF⋅3EtOH⋅3H2O ( H2 btac=[benzotriaole-5-carboxylicacid]; compound (2), and Mn3 (2,6-ndc)3⋅4DMF ( H 2ndc=[2,6-naphthalenedicarbo-xylic acid]; compound (3), have been synthesized, the channels of which are lined with coordinatively unsaturated Mn II centers. The adsorption of O2 in these MOFs has been measured using a gravimetric method at different temperatures (-78°C, -5°C, and 25°C) at a pressure of 1 bar. Gas adsorption isotherms of compounds 1 and 2 at 298 K indicated that they bind O2 by chemisorption at low pressure, with capacities of 1.2 wt.% and 2.14 wt.%, respectively, for the first cycle, with reversible oxygen binding for compound 1 and partially irreversible oxidation for compound 2. However, compound 3 binds O2 by physisorption, with a capacity of just 0.21 wt.%. This difference between the three compounds stems from the different coordination environments of the respective Mn II centers, which give rise to differences in electron density. The results suggest that there must be an optimal electron density around the exposed Mn II center for partial charge transfer from this center to the bound O2 molecule; if the electron density is too high or too low, reversible chemisorption of O2 is not favored.

Hetero-Epitaxial Approach by Using Labile Coordination Sites to Prepare Catenated Metal-Organic Frameworks with High Surface Areas

2014 ◽  
Vol 20 (13) ◽  
pp. 3595-3599 ◽  
Author(s):  
Nianyong Zhu ◽  
Matthew J. Lennox ◽  
Gerard Tobin ◽  
Lisa Goodman ◽  
Tina Düren ◽  
...  
Keyword(s):  
High Surface ◽  
Metal Organic Frameworks ◽  
Surface Areas ◽  
Coordination Sites ◽  
Metal Organic

Metal coordination and metal activation abilities of commonly unreactive chloromethanes toward metal–organic frameworks

2018 ◽  
Vol 54 (50) ◽  
pp. 6458-6471 ◽  
Author(s):  
Jinhee Bae ◽  
Eun Ji Lee ◽  
Nak Cheon Jeong
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Coordination ◽  
Coordination Sites ◽  
Metal Organic

The commonly inert chloromethanes, dichloromethane and trichloromethane, can exchange other solvents bonded at open coordination sites in metal–organic frameworks, providing a new route to activate the open coordination sites for subsequent use in applications.

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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