Mechanochemical Synthesis of Mixed Metal, Mixed Linker GlassForming Metal–Organic Frameworks

2020 ◽  
Author(s):  
Michael Thorne ◽  
Laura Rios ◽  
Alice Bumstead ◽  
Shichun Li ◽  
Thomas Bennett
Keyword(s):  
Metal Ion ◽  
Metal Organic Frameworks ◽  
High Energy ◽  
Mechanochemical Method ◽  
Crystalline Materials ◽  
Glass Forming ◽  
Solvothermal Syntheses ◽  
Metal Organic ◽  
Produce Glass ◽  
First Time

Current methodologies to produce glass forming metal–organic frameworks (MOFs) rely on non-scalable solvothermal syntheses which have high energy requirements, relatively low yields and large tetratogenic solvent usage. Here we use a mechanochemical method to produce glass-forming MOFs, ZIF-62 and ZIF-UC-5, in 30 minutes at room temperature, using microlitre quantities of solvent and stoichiometric amounts of organic linkers. This method facilitates the accurate synthesis of ZIF-62 structures containing both Co and Zn, allowing the effect of metal-ion dopant upon melting temperature to be studied for the first time. Further to this, we present variable organic linker ratio series of IF-62 and of ZIF-UC-5. The specific composition of the materials in the series is made possible by the mechanochemical method. We also present a greener solvothermal method to form ZIF-62, which is capable of producing crystalline materials of suffcient quality for single crystal diffraction experiments.<br><br>

Mechanochemical Synthesis of Mixed Metal, Mixed Linker GlassForming Metal–Organic Frameworks

2020 ◽  
Author(s):  
Michael Thorne ◽  
Laura Rios ◽  
Alice Bumstead ◽  
Shichun Li ◽  
Thomas Bennett
Keyword(s):  
Metal Ion ◽  
Metal Organic Frameworks ◽  
High Energy ◽  
Mechanochemical Method ◽  
Crystalline Materials ◽  
Glass Forming ◽  
Solvothermal Syntheses ◽  
Metal Organic ◽  
Produce Glass ◽  
First Time

Current methodologies to produce glass forming metal–organic frameworks (MOFs) rely on non-scalable solvothermal syntheses which have high energy requirements, relatively low yields and large tetratogenic solvent usage. Here we use a mechanochemical method to produce glass-forming MOFs, ZIF-62 and ZIF-UC-5, in 30 minutes at room temperature, using microlitre quantities of solvent and stoichiometric amounts of organic linkers. This method facilitates the accurate synthesis of ZIF-62 structures containing both Co and Zn, allowing the effect of metal-ion dopant upon melting temperature to be studied for the first time. Further to this, we present variable organic linker ratio series of IF-62 and of ZIF-UC-5. The specific composition of the materials in the series is made possible by the mechanochemical method. We also present a greener solvothermal method to form ZIF-62, which is capable of producing crystalline materials of suffcient quality for single crystal diffraction experiments.<br><br>

Mechanochemical synthesis of mixed metal, mixed linker, glass-forming metal–organic frameworks

2020 ◽  
Vol 22 (8) ◽  
pp. 2505-2512 ◽  
Author(s):  
Michael F. Thorne ◽  
María Laura Ríos Gómez ◽  
Alice M. Bumstead ◽  
Shichun Li ◽  
Thomas D. Bennett
Keyword(s):  
Mechanochemical Synthesis ◽  
Metal Organic Frameworks ◽  
High Energy ◽  
Energy Requirements ◽  
Mixed Metal ◽  
Glass Forming ◽  
Solvothermal Syntheses ◽  
Metal Organic ◽  
Produce Glass

Methods to produce glass forming metal–organic frameworks (MOFs) rely on solvothermal syntheses which have high energy requirements, low yields and large teratogenic solvent usage. We present mechanochemical methods to overcome these issues.

Metal organic framework derived Nb2O5@C nanoparticles grown on reduced graphene oxide for high-energy lithium ion capacitors

2019 ◽  
Vol 55 (18) ◽  
pp. 2692-2695 ◽  
Author(s):  
Xinyan Jiao ◽  
Qingli Hao ◽  
Xifeng Xia ◽  
Zongdeng Wu ◽  
Wu Lei
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Lithium Ion ◽  
High Energy ◽  
Reduced Graphene ◽  
Metal Organic ◽  
First Time ◽  
Organic Framework

For the first time, M-Nb2O5@C/rGO composites are fabricated by annealing the precursor of GO supported Nb-metal organic frameworks.

scholarly journals Synthesis and characterization of CaSr-Metal Organic Frameworks for biodegradable orthopedic applications

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Naomi Joseph ◽  
Harrison D. Lawson ◽  
Kalon J. Overholt ◽  
Krishnan Damodaran ◽  
Riccardo Gottardi ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Organic Ligand ◽  
Human Mesenchymal Stem Cells ◽  
Pcr Analysis ◽  
Vascular Endothelial ◽  
Crystalline Materials ◽  
Metal Organic ◽  
Orthopedic Applications ◽  
First Time

Abstract Metal-organic frameworks (MOFs) formed from metals and organic ligands, are crystalline materials that are degradable in aqueous medium, and capable of releasing Ca and Sr ions. In this manuscript, the ability of MOFs to degrade and release osteogenic Ca and Sr ions was investigated. MOFs were generated by choosing osteoinductive Ca and Sr metals, and an organic ligand 1,3,5 tricarboxylicbenzene (H3BTC) as a linker. These MOFs were able to induce in vitro biomineralization from pre-osteoblastic MC3T3 cells and human mesenchymal stem cells (hMSCs). Moreover, these MOFs (when loaded with dimethyloxalylglycine (DMOG)) induced vascular endothelial production from hMSCs. qRT-PCR analysis performed on hMSCs (isolated from femoral heads of patients undergoing joint arthroplasty) treated with MOFs crystals suggested that the CaSr-MOFs by themselves can upregulate osteogenic genes in hMSCs, which is the first time to our knowledge that this has been observed from MOFs.

scholarly journals Porphyrin MOF-Derived Porous Carbons: Preparation and Applications

2021 ◽  
Vol 7 (2) ◽  
pp. 47
Author(s):  
Flávio Figueira ◽  
Filipe A. Almeida Paz
Keyword(s):  
Chemical Composition ◽  
Carbon Material ◽  
Metal Organic Frameworks ◽  
Electrochemical Reactions ◽  
Porous Carbon Material ◽  
Important Class ◽  
Porous Carbons ◽  
Preparation Methods ◽  
Crystalline Materials ◽  
Metal Organic

Metal–organic frameworks (MOFs) are crystalline materials with permanent porosity, composed of metal nodes and organic linkers whose well-ordered arrangement enables them to act as ideal templates to produce materials with a uniform distribution of heteroatom and metal elements. The hybrid nature of MOFs, well-defined pore structure, large surface area and tunable chemical composition of their precursors, led to the preparation of various MOF-derived porous carbons with controlled structures and compositions bearing some of the unique structural properties of the parent networks. In this regard, an important class of MOFs constructed with porphyrin ligands were described, playing significant roles in the metal distribution within the porous carbon material. The most striking early achievements using porphyrin-based MOF porous carbons are here summarized, including preparation methods and their transformation into materials for electrochemical reactions.

Core-shell ZIF-8@polydopamine nanoparticles obtained by mitigating polydopamine coating induced self-etching of MOFs: prototypical metal ion reservoirs for sticking to and killing bacteria

2021 ◽  
Author(s):  
Yingxue Tu ◽  
Caifen Lei ◽  
Fei Deng ◽  
Yiang Chen ◽  
Ying Wang ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Biomedical Applications ◽  
Metal Organic Frameworks ◽  
Core Shell ◽  
Metal Organic

Metal organic frameworks (MOFs) have the potential to boost the undervalued biomedical applications of metal ions. Such endeavor has been hindered by the challenge of how to avoid the (cyto)toxicity...

A series of porous 3D inorganic–organic hybrid framework crystalline materials based on 5-aminoisophthalic acid for photocatalytic degradation of crystal violet

2021 ◽  
Vol 45 (7) ◽  
pp. 3432-3440
Author(s):  
Yu Xin ◽  
Jun Zhou ◽  
Yong Heng Xing ◽  
Feng Ying Bai ◽  
Li Xian Sun
Keyword(s):  
Photocatalytic Degradation ◽  
Crystal Violet ◽  
Metal Organic Frameworks ◽  
Synthetic Method ◽  
Crystalline Materials ◽  
Organic Hybrid ◽  
Hybrid Framework ◽  
Metal Organic ◽  
Degradation Properties

Seven 3D metal-organic frameworks have been designed and synthesized by the hydrothermal synthetic method based on the ligand 5-aminoisophthalic acid. Complexes 1-4 have better photocatalytic degradation properties for dyes CV.

scholarly journals The nanoscaled metal-organic framework ICR-2 as a carrier of porphyrins for photodynamic therapy

2018 ◽  
Vol 9 ◽  
pp. 2960-2967 ◽  
Author(s):  
Jan Hynek ◽  
Sebastian Jurík ◽  
Martina Koncošová ◽  
Jaroslav Zelenka ◽  
Ivana Křížová ◽  
...  
Keyword(s):  
Inorganic Chemistry ◽  
Photodynamic Therapy ◽  
Photophysical Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Biological Applications ◽  
Nanoparticle Surface ◽  
Metal Organic ◽  
Unsaturated Metal Sites ◽  
First Time

Nanosized porphyrin-containing metal-organic frameworks (MOFs) attract considerable attention as solid-state photosensitizers for biological applications. In this study, we have for the first time synthesised and characterised phosphinate-based MOF nanoparticles, nanoICR-2 (Inorganic Chemistry Rez). We demonstrate that nanoICR-2 can be decorated with anionic 5,10,15,20-tetrakis(4-R-phosphinatophenyl)porphyrins (R = methyl, isopropyl, phenyl) by utilizing unsaturated metal sites on the nanoparticle surface. The use of these porphyrins allows for superior loading of the nanoparticles when compared with commonly used 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin. The nanoICR-2/porphyrin composites retain part of the free porphyrins photophysical properties, while the photodynamic efficacy is strongly affected by the R substituent at the porphyrin phosphinate groups. Thus, phosphinatophenylporphyrin with phenyl substituents has the strongest photodynamic efficacy due to the most efficient cellular uptake.

scholarly journals Influence of Ligand Functionalization of UiO-66-Based Metal-Organic Frameworks When Used as Sorbents in Dispersive Solid-Phase Analytical Microextraction for Different Aqueous Organic Pollutants

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2869 ◽  
Author(s):  
Iván Taima-Mancera ◽  
Priscilla Rocío-Bautista ◽  
Jorge Pasán ◽  
Juan Ayala ◽  
Catalina Ruiz-Pérez ◽  
...  
Keyword(s):  
High Performance ◽  
Solid Phase ◽  
Metal Organic Frameworks ◽  
Aqueous Sample ◽  
Optimization Study ◽  
Relative Standard ◽  
Polycyclic Aromatic ◽  
Metal Organic ◽  
Array Detection ◽  
First Time

Four metal-organic frameworks (MOFs), specifically UiO-66, UiO-66-NH2, UiO-66-NO2, and MIL-53(Al), were synthesized, characterized, and used as sorbents in a dispersive micro-solid phase extraction (D-µSPE) method for the determination of nine pollutants of different nature, including drugs, phenols, polycyclic aromatic hydrocarbons, and personal care products in environmental waters. The D-µSPE method, using these MOFs as sorbents and in combination with high-performance liquid chromatography (HPLC) and diode-array detection (DAD), was optimized. The optimization study pointed out to UiO-66-NO2 as the best MOF to use in the multi-component determination. Furthermore, the utilization of isoreticular MOFs based on UiO-66 with the same topology but different functional groups, and MIL-53(Al) to compare with, allowed us for the first time to evaluate the influence of such functionalization of the ligand with regards to the efficiency of the D-µSPE-HPLC-DAD method. Optimum conditions included: 20 mg of UiO-66-NO2 MOF in 20 mL of the aqueous sample, 3 min of agitation by vortex and 5 min of centrifugation, followed by the use of only 500 µL of acetonitrile as desorption solvent (once the MOF containing analytes was separated), 5 min of vortex and 5 min of centrifugation. The validation of the D-µSPE-HPLC-DAD method showed limits of detection down to 1.5 ng·L−1, average relative recoveries of 107% for a spiked level of 1.50 µg·L−1, and inter-day precision values with relative standard deviations lower than 14%, for the group of pollutants considered.

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