Exploring the Fundamental Roles of Functionalized Ligands in Platinum@Metal–Organic Framework Catalysts

2020 ◽  
Vol 12 (47) ◽  
pp. 52660-52667
Author(s):  
Wenlei Zhang ◽  
Wenlan Ji ◽  
Linjie Li ◽  
Peishan Qin ◽  
Islam E. Khalil ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Platinum Metal ◽  
Metal Organic ◽  
Functionalized Ligands ◽  
Organic Framework

Enhancing hydrogel-based long-lasting chemiluminescence by a platinum-metal organic framework and its application in array detection of pesticides and d-amino acids

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4959-4967 ◽  
Author(s):  
Ye Lu ◽  
Min Wei ◽  
Chenchen Wang ◽  
Wei Wei ◽  
Yong Liu
Keyword(s):  
Amino Acids ◽  
Metal Organic Framework ◽  
Platinum Metal ◽  
Metal Organic ◽  
Array Detection ◽  
Organic Framework

Enhancing hydrogels-based long-lasting chemiluminescence by platinum-metal organic framework and its application in array detection of pesticides and d-amino acids.

A water-stable terbium metal–organic framework with functionalized ligands for the detection of Fe3+ and Cr2O72− ions in water and picric acid in seawater

CrystEngComm ◽  
2020 ◽  
Vol 22 (21) ◽  
pp. 3638-3643 ◽  
Author(s):  
Hai-Huan Yu ◽  
Jia-Qi Chi ◽  
Zhong-Min Su ◽  
Xiao Li ◽  
Jing Sun ◽  
...  
Keyword(s):  
Picric Acid ◽  
Metal Organic Framework ◽  
Simultaneous Detection ◽  
Water Stability ◽  
Metal Organic ◽  
Functionalized Ligands ◽  
High Fluorescence ◽  
Organic Framework

A novel Tb-MOF-A was fabricated by functionalized ligands and Tb3+, which displays high fluorescence, water stability up to 21 days and rapid, cyclic, simultaneous detection of Fe3+, Cr2O72− ions in water and picric acid in seawater.

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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