Ligand Rigidification for Enhancing the Stability of Metal–Organic Frameworks

2019 ◽  
Vol 141 (26) ◽  
pp. 10283-10293 ◽  
Author(s):  
Xiu-Liang Lv ◽  
Shuai Yuan ◽  
Lin-Hua Xie ◽  
Hannah F. Darke ◽  
Ya Chen ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
The Stability

Enhancing the stability of metal–organic frameworks in humid air by incorporating water repellent functional groups

2010 ◽  
Vol 46 (33) ◽  
pp. 6120 ◽  
Author(s):  
Tianjiao Wu ◽  
Lingjuan Shen ◽  
Matthew Luebbers ◽  
Chunhua Hu ◽  
Qingmei Chen ◽  
...  
Keyword(s):  
Functional Groups ◽  
Metal Organic Frameworks ◽  
Water Repellent ◽  
Humid Air ◽  
Metal Organic ◽  
The Stability

Fixing Flexible Arms of Core-Shared Ligands to Enhance the Stability of Metal–Organic Frameworks

2019 ◽  
Vol 58 (23) ◽  
pp. 15909-15916 ◽  
Author(s):  
Chen Dong ◽  
Jinquan Bai ◽  
Xiu-Liang Lv ◽  
Wei Wu ◽  
Jie Lv ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
The Stability ◽  
Flexible Arms

Governing metal–organic frameworks towards high stability

2016 ◽  
Vol 52 (55) ◽  
pp. 8501-8513 ◽  
Author(s):  
Na Li ◽  
Jian Xu ◽  
Rui Feng ◽  
Tong-Liang Hu ◽  
Xian-He Bu
Keyword(s):  
Chemical Composition ◽  
High Stability ◽  
Metal Organic Frameworks ◽  
Crucial Issue ◽  
Practical Applications ◽  
Metal Organic ◽  
The Stability

Stability of MOFs is a crucial issue for their practical applications, which might be improved by varying their chemical composition and/or structurally tuning them. Several strategies for enhancing the stability of MOFs were provided.

scholarly journals Increasing the Stability of Metal-Organic Frameworks

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mathieu Bosch ◽  
Muwei Zhang ◽  
Hong-Cai Zhou
Keyword(s):  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
Vacuum Treatment ◽  
Donor Ligands ◽  
Gas Sorption ◽  
Nitrogen Donor Ligands ◽  
Metal Centers ◽  
Ligand Interactions ◽  
Metal Organic ◽  
The Stability

Metal-organic frameworks (MOFs) are a new category of advanced porous materials undergoing study by many researchers for their vast variety of both novel structures and potentially useful properties arising from them. Their high porosities, tunable structures, and convenient process of introducing both customizable functional groups and unsaturated metal centers have afforded excellent gas sorption and separation ability, catalytic activity, luminescent properties, and more. However, the robustness and reactivity of a given framework are largely dependent on its metal-ligand interactions, where the metal-containing clusters are often vulnerable to ligand substitution by water or other nucleophiles, meaning that the frameworks may collapse upon exposure even to moist air. Other frameworks may collapse upon thermal or vacuum treatment or simply over time. This instability limits the practical uses of many MOFs. In order to further enhance the stability of the framework, many different approaches, such as the utilization of high-valence metal ions or nitrogen-donor ligands, were recently investigated. This review details the efforts of both our research group and others to synthesize MOFs possessing drastically increased chemical and thermal stability, in addition to exemplary performance for catalysis, gas sorption, and separation.

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.

The Stability of Metal-Organic Frameworks

2018 ◽  
pp. 1-28 ◽  
Author(s):  
Georges Mouchaham ◽  
Sujing Wang ◽  
Christian Serre
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
The Stability

A Combined Experimental and Computational Study on the Stability of Nanofluids Containing Metal Organic Frameworks

2015 ◽  
Vol 119 (29) ◽  
pp. 8992-8999 ◽  
Author(s):  
Harsha V. R. Annapureddy ◽  
Satish K. Nune ◽  
Radha Kishan Motkuri ◽  
B. Peter McGrail ◽  
Liem X. Dang
Keyword(s):  
Computational Study ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
The Stability

scholarly journals Solvent-Dependent Stability of Highly Defective UiO-66 to Acids and Bases

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio A. Peixoto Esteves ◽  
Nathan T. Fischer ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Crystalline Structure ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Systematic Investigation ◽  
Acid Base ◽  
Metal Organic ◽  
Acids And Bases ◽  
The Stability ◽  
Strong Acids

UiO-66 is one of the most chemically stable Metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective UiO-66 (HD-UiO-66) and explored how its textural properties change when exposed to weak and strong acids, both organic and inorganic in nature, and dissolved in different solvents, water, dichloromethane (DCM), and tetrahydrofuran (THF). Exposing defective UiO-66 to weak acids and bases, such as acetic acid and triethylamine, maintains its crystalline structure and porosity, irrespective of the solvent. Sulphuric acid decomposes HD-UiO-66 in organic solvents but not in water, trifluoroacetic acid decomposes the framework only in DCM. Tetramethylguanidine decomposes HD-UiO-66 in organic solvents but mantains some of the MOFs porosity and crystalline structure in water, whereas potassium carbonate damages the MOF to a greater extent in water than in organic solvents. Our results show that the acid/base properties of the solvent modulate the strength of acids and bases and its polarity determines the extent of their solvation, thus playing a crucial role in altering the MOF’s textural properties. This systematic investigation highlights the central role played by the solvent in tuning the stability of MOFs, which is relevant for liquid-phase applications in acidic and basic environments, such as catalysis and adsorption.

scholarly journals Solvent-Dependent Stability of Highly Defective UiO-66 to Acids and Bases

2021 ◽  
Author(s):  
Daniele Cartagenova ◽  
Fabio A. Peixoto Esteves ◽  
Nathan T. Fischer ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Organic Solvents ◽  
Crystalline Structure ◽  
Metal Organic Frameworks ◽  
Textural Properties ◽  
Systematic Investigation ◽  
Acid Base ◽  
Metal Organic ◽  
Acids And Bases ◽  
The Stability ◽  
Strong Acids

UiO-66 is one of the most chemically stable Metal-organic frameworks (MOFs) available. However, little is known about its stability in organic solvents. In this study, we synthesized a highly defective UiO-66 (HD-UiO-66) and explored how its textural properties change when exposed to weak and strong acids, both organic and inorganic in nature, and dissolved in different solvents, water, dichloromethane (DCM), and tetrahydrofuran (THF). Exposing defective UiO-66 to weak acids and bases, such as acetic acid and triethylamine, maintains its crystalline structure and porosity, irrespective of the solvent. Sulphuric acid decomposes HD-UiO-66 in organic solvents but not in water, trifluoroacetic acid decomposes the framework only in DCM. Tetramethylguanidine decomposes HD-UiO-66 in organic solvents but mantains some of the MOFs porosity and crystalline structure in water, whereas potassium carbonate damages the MOF to a greater extent in water than in organic solvents. Our results show that the acid/base properties of the solvent modulate the strength of acids and bases and its polarity determines the extent of their solvation, thus playing a crucial role in altering the MOF’s textural properties. This systematic investigation highlights the central role played by the solvent in tuning the stability of MOFs, which is relevant for liquid-phase applications in acidic and basic environments, such as catalysis and adsorption.

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