scholarly journals Thermally induced migration of a polyoxometalate within a metal–organic framework and its catalytic effects

2018 ◽  
Vol 6 (17) ◽  
pp. 7389-7394 ◽  
Author(s):  
Cassandra T. Buru ◽  
Ana. E. Platero-Prats ◽  
Daniel G. Chica ◽  
Mercouri G. Kanatzidis ◽  
Karena W. Chapman ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Thermally Induced ◽  
Metal Organic ◽  
Catalytic Effects ◽  
Organic Framework

A polyoxometalate supported by the metal–organic framework, NU-1000, undergoes migration from the mesopore to the micropore when heated.

High temperature spin crossover in [Fe(pyrazine){Ag(CN)2}2] and its solvate

2016 ◽  
Vol 40 (11) ◽  
pp. 9012-9016 ◽  
Author(s):  
Il'ya A. Gural'skiy ◽  
Sergii I. Shylin ◽  
Bohdan O. Golub ◽  
Vadim Ksenofontov ◽  
Igor O. Fritsky ◽  
...  
Keyword(s):  
High Temperature ◽  
Spin Crossover ◽  
Metal Organic Framework ◽  
Spin Transition ◽  
Thermally Induced ◽  
Metal Organic ◽  
Organic Framework

Thermally induced spin transition at 370 K has been observed in a Hofmann-clathrate-like metal–organic framework.

Co-catalytic Effects of Bi-Based Metal-Organic Framework on BiVO4 Photoanodes for Photoelectrochemical Water Oxidation

2021 ◽  
pp. 150357
Author(s):  
Seungkyu Kim ◽  
Top Archie Dela Pena ◽  
Sehun Seo ◽  
Hansol Choi ◽  
Juncheol Park ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Catalytic Effects ◽  
Photoelectrochemical Water Oxidation ◽  
Organic Framework

scholarly journals The thermally induced decarboxylation mechanism of a mixed-oxidation state carboxylate-based iron metal–organic framework

2019 ◽  
Vol 55 (85) ◽  
pp. 12769-12772 ◽  
Author(s):  
Hannah F. Drake ◽  
Gregory S. Day ◽  
Shaik Waseem Vali ◽  
Zhifeng Xiao ◽  
Sayan Banerjee ◽  
...  
Keyword(s):  
Oxidation State ◽  
Metal Organic Framework ◽  
Gas Sorption ◽  
Thermally Induced ◽  
Activation Pathway ◽  
Iron Metal ◽  
Mixed Oxidation ◽  
Metal Organic ◽  
Organic Framework

The thermally generatable decarboxylation activation pathway of a carboxylate-based Iron MOF is reported; cluster and gas sorption changes are characterized.

Multifunctional metal–organic framework heterostructures for enhanced cancer therapy

2021 ◽  
Author(s):  
Jintong Liu ◽  
Jing Huang ◽  
Lei Zhang ◽  
Jianping Lei
Keyword(s):  
Cancer Therapy ◽  
General Principle ◽  
Biomedical Applications ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Functional Modulation ◽  
Organic Framework

We review the general principle of the design and functional modulation of nanoscaled MOF heterostructures, and biomedical applications in enhanced therapy.

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Framework ◽  
Chemical Vapor ◽  
Uptake Capacity ◽  
Powder Synthesis ◽  
Crystalline Films ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time ◽  
Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

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