scholarly journals Isoreticular zirconium-based metal–organic frameworks: discovering mechanical trends and elastic anomalies controlling chemical structure stability

2016 ◽  
Vol 18 (13) ◽  
pp. 9079-9087 ◽  
Author(s):  
Matthew R. Ryder ◽  
Bartolomeo Civalleri ◽  
Jin-Chong Tan
Keyword(s):  
Mechanical Properties ◽  
Chemical Structure ◽  
Metal Organic Frameworks ◽  
Structure Stability ◽  
Practical Applications ◽  
Open Framework ◽  
Metal Organic ◽  
Fundamental Research ◽  
Elastic Anomalies ◽  
Framework Compounds

Understanding the mechanical properties of MOFs is crucial not only to yield robust practical applications, but also to advance fundamental research underpinning flexibility of a myriad of open-framework compounds.

scholarly journals Elastic Properties and Energy Loss Related to the Disorder–Order Ferroelectric Transitions in Multiferroic Metal–Organic Frameworks [NH4][Mg(HCOO)3] and [(CH3)2NH2][Mg(HCOO)3]

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3125
Author(s):  
Zhiying Zhang ◽  
Hongliang Yu ◽  
Xin Shen ◽  
Lei Sun ◽  
Shumin Yue ◽  
...  
Keyword(s):  
Phase Transition ◽  
Energy Loss ◽  
Elastic Properties ◽  
Ferroelectric Phase ◽  
Loss Modulus ◽  
Structural Phase ◽  
Metal Organic Frameworks ◽  
First Order ◽  
Metal Organic ◽  
Elastic Anomalies

Elastic properties are important mechanical properties which are dependent on the structure, and the coupling of ferroelasticity with ferroelectricity and ferromagnetism is vital for the development of multiferroic metal–organic frameworks (MOFs). The elastic properties and energy loss related to the disorder–order ferroelectric transition in [NH4][Mg(HCOO)3] and [(CH3)2NH2][Mg(HCOO)3] were investigated using differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The DSC curves of [NH4][Mg(HCOO)3] and [(CH3)2NH2][Mg(HCOO)3] exhibited anomalies near 256 K and 264 K, respectively. The DMA results illustrated the minimum in the storage modulus and normalized storage modulus, and the maximum in the loss modulus, normalized loss modulus and loss factor near the ferroelectric transition temperatures of 256 K and 264 K, respectively. Much narrower peaks of loss modulus, normalized loss modulus and loss factor were observed in [(CH3)2NH2][Mg(HCOO)3] with the peak temperature independent of frequency, and the peak height was smaller at a higher frequency, indicating the features of first-order transition. Elastic anomalies and energy loss in [NH4][Mg(HCOO)3] near 256 K are due to the second-order paraelectric to ferroelectric phase transition triggered by the disorder–order transition of the ammonium cations and their displacement within the framework channels, accompanied by the structural phase transition from the non-polar hexagonal P6322 to polar hexagonal P63. Elastic anomalies and energy loss in [(CH3)2NH2][Mg(HCOO)3] near 264 K are due to the first-order paraelectric to ferroelectric phase transitions triggered by the disorder–order transitions of alkylammonium cations located in the framework cavities, accompanied by the structural phase transition from rhombohedral R3¯c to monoclinic Cc. The elastic anomalies in [NH4][Mg(HCOO)3] and [(CH3)2NH2][Mg(HCOO)3] showed strong coupling of ferroelasticity with ferroelectricity.

scholarly journals Mechanical Properties in Metal-Organic Frameworks: Emerging Opportunities and Challenges for Device Functionality and Technological Applications

2017 ◽  
Vol 30 (37) ◽  
pp. 1704124 ◽  
Author(s):  
Nicholas C. Burtch ◽  
Jurn Heinen ◽  
Thomas D. Bennett ◽  
David Dubbeldam ◽  
Mark D. Allendorf
Keyword(s):  
Mechanical Properties ◽  
Metal Organic Frameworks ◽  
Metal Organic

Binder-Free mechanochemical metal-organic framework nanocrystal coatings

Nanoscale ◽  
2022 ◽  
Author(s):  
Rijia Lin ◽  
Yuqi Yao ◽  
Muhammad Yazid Bin Zulkifli ◽  
Xuemei Li ◽  
Shuai Gao ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Practical Applications ◽  
Metal Organic ◽  
Binder Free ◽  
Organic Framework

The practical applications of metal-organic frameworks (MOFs) usually require their assembly into mechanically robust structures, usually achieved via coating onto various types of substrates. This paper describes a simple, scalable,...

scholarly journals Correction: Enhancement of CO2 binding and mechanical properties upon diamine functionalization of M2(dobpdc) metal–organic frameworks

2019 ◽  
Vol 10 (27) ◽  
pp. 6736-6736
Author(s):  
Jung-Hoon Lee ◽  
Rebecca L. Siegelman ◽  
Lorenzo Maserati ◽  
Tonatiuh Rangel ◽  
Brett A. Helms ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metal Organic Frameworks ◽  
Metal Organic

Correction for ‘Enhancement of CO2 binding and mechanical properties upon diamine functionalization of M2(dobpdc) metal–organic frameworks’ by Jung-Hoon Lee et al., Chem. Sci., 2018, 9, 5197–5206.

scholarly journals Poly(ionic liquid)-Modified Metal Organic Framework for Carbon Dioxide Adsorption

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 370 ◽  
Author(s):  
Guangyuan Yang ◽  
Jialin Yu ◽  
Sanwen Peng ◽  
Kuang Sheng ◽  
Haining Zhang
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Composite Materials ◽  
Metal Organic Frameworks ◽  
Carbon Dioxide Partial Pressure ◽  
Carbon Dioxide Adsorption ◽  
Solid Sorbent ◽  
Practical Applications ◽  
Metal Organic ◽  
Poly Ionic Liquid

The design and synthesis of solid sorbents for effective carbon dioxide adsorption are essential for practical applications regarding carbon emissions. Herein, we report the synthesis of composite materials consisting of amine-functionalized imidazolium-type poly(ionic liquid) (PIL) and metal organic frameworks (MOFs) through complexation of amino groups and metal ions. The carbon dioxide adsorption behavior of the synthesized composite materials was evaluated using the temperature-programmed desorption (TPD) technique. Benefiting from the large surface area of metal organic frameworks and high carbon dioxide diffusivity in ionic liquid moieties, the carbon dioxide adsorption capacity of the synthesized composite material reached 19.5 cm3·g−1, which is much higher than that of pristine metal organic frameworks (3.1 cm3·g−1) under carbon dioxide partial pressure of 0.2 bar at 25 °C. The results demonstrate that the combination of functionalized poly(ionic liquid) with metal organic frameworks can be a promising solid sorbent for carbon dioxide adsorption.

scholarly journals Mechanical properties of metal–organic frameworks

2019 ◽  
Vol 10 (46) ◽  
pp. 10666-10679 ◽  
Author(s):  
Louis R. Redfern ◽  
Omar K. Farha
Keyword(s):  
Mechanical Properties ◽  
Porous Materials ◽  
Metal Organic Frameworks ◽  
Physical Stability ◽  
Metal Organic

As the field of metal–organic frameworks (MOFs) continues to grow, the physical stability and mechanical properties of these porous materials has become a topic of great interest.

Property of Nanoporous Metal-Organic Frameworks at Different Synthesis Temperature

2012 ◽  
Vol 427 ◽  
pp. 123-127
Author(s):  
Yuan Hui Ma ◽  
Lei Zhang ◽  
Cheng Chun Tang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Reaction Temperature ◽  
Metal Organic Frameworks ◽  
Synthesis Temperature ◽  
Structure Stability ◽  
Nanoporous Metal ◽  
Metal Organic ◽  
Ft Ir

The nanoporous metal-organic frameworks were synthesized under solvothermal conditions using organic solvent dimethylformamide. The samples were characterized by XRD, SEM, TGA, FT-IR and specific surface area for their properties difference. When the reaction temperature rises, the particle size becomes larger. All TGA curves are the basically same, the framework structure begins to be destroyed from 500°C up to around 600°C. The metal-organic frameworks accepted at reaction temperature 190°C have larger specific surface area and better structure stability.

Sign in / Sign up

Export Citation Format

Share Document