A5100373187- Metal-Organic Frameworks: Synthesis and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Covalent Organic Framework Applications
- Machine Learning in Materials Science
- Magnetism in coordination complexes
- Catalytic Processes in Materials Science
- Hydrogen Storage and Materials
- Crystallography and molecular interactions
- Luminescence and Fluorescent Materials
- Dendrimers and Hyperbranched Polymers
- Advanced Nanomaterials in Catalysis
- Carbon dioxide utilization in catalysis
- Ammonia Synthesis and Nitrogen Reduction
- MXene and MAX Phase Materials
- Radioactive element chemistry and processing
- Semiconductor materials and devices
- Molecular Sensors and Ion Detection
- Catalysis and Hydrodesulfurization Studies
- Arsenic contamination and mitigation
- Porphyrin and Phthalocyanine Chemistry
- Enhanced Oil Recovery Techniques
- Inorganic Chemistry and Materials
- Synthesis and Properties of Aromatic Compounds
- Nanoplatforms for cancer theranostics
Sandia National Laboratories California
2018-2020
Lawrence Livermore National Security
2019
Northwestern University
2015-2018
Sandia National Laboratories
2018
International Institute for Nanotechnology
2015
Chang Gung University
2015
National Yang Ming Chiao Tung University
2014
Metal–organic frameworks (MOFs) are structurally diverse materials comprised of inorganic and organic components. As the rapidly expanding field MOF research has demonstrated, these being explored for a wide variety potential applications. In this tutorial review, we give an overview current best practices associated with synthesis, activation, characterization MOFs. Methods described include supercritical CO2 single crystal X-ray diffraction (XRD), powder (PXRD), nitrogen...
A series of zirconium-based, metal-organic frameworks (MOFs) were tested for their ability to adsorb and remove selenate selenite anions from aqueous solutions. MOFs adsorption capacity uptake time at different concentrations. NU-1000 was shown have the highest capacity, fastest rates both selenite, all zirconium-based studied here. Herein, mechanism on is explored determine important features that make a superior adsorbent this application.
An isoreticular series of metal–organic frameworks (MOFs) with the ftw topology based on zirconium oxoclusters and tetracarboxylate linkers a planar core (NU-1101 through NU-1104) has been synthesized employing linker expansion approach. In this series, NU-1103 pore volume 2.91 cc g–1 geometrically calculated surface area 5646 m2 g–1, which is highest value reported to date for zirconium-based MOF among largest that have any porous material. Successful activation MOFs was proven agreement...
Developing supported single-site catalysts is an important goal in heterogeneous catalysis since the well-defined active sites afford opportunities for detailed mechanistic studies, thereby facilitating design of improved catalysts. We present herein a method installing Ni ions uniformly and precisely on node Zr-based metal–organic framework (MOF), NU-1000, high density large quantity (denoted as Ni-AIM) using atomic layer deposition (ALD) MOF (AIM). Ni-AIM demonstrated to be efficient...
Utilizing metal-organic frameworks (MOFs) as a biological carrier can lower the amount of active pharmaceutical ingredient (API) required in cancer treatments to provide more efficacious therapy. In this work, we have developed temperature treatment process for delaying release model drug compound from pores NU-1000 and NU-901, while taking care utilize these MOFs' large pore volume size achieve exceptional loading percentages over 35 wt %. Video-rate super-resolution microscopy reveals...
Metal–organic frameworks (MOFs) are porous materials synthesized by combining inorganic and organic molecular building blocks into crystalline networks of distinct topologies.
We develop the first mechanochemical and solvent-free routes for zirconium metal-organic frameworks, making frameworks UiO-66 UiO-66-NH2 accessible on gram scale without strong acids, high temperatures or excess reactants. The form either by milling, spontaneous self-assembly simply exposing solid mixtures of reactants to organic vapour. generated exhibit porosity catalytic activity in hydrolysis model nerve agents, par with their solvothermally counterparts.
Potentiometric acid–base titration is introduced as a method to evaluate p<italic>K</italic><sub>a</sub> values (Brønsted acidity) of protons present in the nodes water stable Zr<sub>6</sub>- and Hf<sub>6</sub>-based metal–organic frameworks (MOFs), including UiO-type MOFs, NU-1000, MOF-808.
Metal-organic frameworks with Zr6 nodes, UiO-66 and NU-1000, were investigated as supports for Ir(CO)2 Ir(C2H4)2 complexes. A single bonding site the iridium is identified on nodes of whereas two sites are UiO-66, although at low loadings only one occupied. Density functional theory calculations provide structural results that in good agreement infrared X-ray absorption fine-structure spectra. The reactivity node-supported C2H4 catalytic activity selectivity species initially present...
Mechanochemistry provides a rapid, efficient route to metal–organic framework Zn-MOF-74 directly from metal oxide and without bulk solvent. In situ synchrotron X-ray diffraction monitoring of the reaction course reveals two new phases an unusual stepwise process in which close-packed intermediate reacts form open framework. The can be performed on gram scale yield highly porous material after activation.
The synthesis of nano-sized particles NU-1000 (length from 75 nm to 1200 nm) and PCN-222/MOF-545 350 900 is reported.
"Breathing" metal-organic frameworks (MOFs) are an emerging class of soft porous crystals (SPCs) with potential for high working capacity gas storage applications. However, most breathing MOFs have low stability and/or surface area. Here we report a water-stable, area, MOF ftw topology, NU-1105. While Zr6-oxo clusters as nodes introduce water in NU-1105, its area and character stem from pyrene-based tetracarboxylate (Py-FP) linkers, which the fluorene units (F) FP "arms" play key role...
The Zr6 nodes of the metal–organic frameworks (MOFs) UiO-66 and UiO-67 are metal oxide clusters atomic precision can be used as catalyst supports. bonding sites on these nodes—that is, hydrogen-bonded H2O/OH groups non-hydrogen-bonded terminal OH UiO-66—were regulated by modulation MOF syntheses. Ir(C2H4)2(C5H7O2) complexes reacted with to give site-isolated Ir(C2H4)2 complexes, each anchored node two Ir–Onode bonds. supported iridium have been characterized infrared (IR) extended X-ray...
Thin films of the metal-organic framework (MOF) NU-1000 were grown on conducting glass substrates. The uniformly cover substrates and are composed free-standing sub-micrometer rods. Subsequently, atomic layer deposition (ALD) was utilized to deposit Co(2+) ions throughout entire MOF film via self-limiting surface-mediated reaction chemistry. Co bind at aqua hydroxo sites lining channels NU-1000, resulting in three-dimensional arrays separated thin film. Co-modified demonstrate promising...
Metal–organic frameworks (MOFs) are porous crystalline materials that promising for adsorption-based, on-board storage of hydrogen in fuel-cell vehicles. Volumetric and gravimetric capacities the key factors determine size weight MOF-filled tank required to store a certain amount reasonable driving range. Therefore, they must be optimized so is neither too large nor heavy. Because goals maximizing MOF volumetric adsorption loadings individually incompatible, an in-depth understanding...
ConspectusMetal–organic frameworks (MOFs) are a class of crystalline porous materials characterized by inorganic nodes and multitopic organic linkers. Because their molecular-scale porosity periodic intraframework chemical functionality, MOFs attractive scaffolds for supporting and/or organizing catalysts, photocatalysts, chemical-sensing elements, small enzymes, numerous other functional-property-imparting, nanometer-scale objects. Notably, these objects can be installed after the synthesis...
Postsynthetic functionalization of metal organic frameworks (MOFs) enables the controlled, high-density incorporation new atoms on a crystallographically precise framework. Leveraging broad palette known atomic layer deposition (ALD) chemistries, ALD in MOFs (AIM) is one such targeted approach to construct diverse, highly functional, few-atom clusters. We here demonstrate saturating reaction trimethylindium (InMe3) with node hydroxyls and ligated water NU-1000, which takes place without...
We report the design and synthesis of a metal-organic framework (MOF)-polythiophene composite that has comparable electronic conductivity to reported conductive 3-D MOFs, but with display retention high porosity, including mesoporosity. A robust zirconium MOF, NU-1000, was rendered electronically by first incorporating, via solvent-assisted ligand incorporation (SALI), carefully designed pentathiophene derivative at density one pentamer per hexa-zirconium node. Using cast film intermediate...
The combination (AIM-ME) of atomic layer deposition in metal–organic frameworks (MOFs) and metal exchange (ME) is introduced as a technique to install dispersed atoms into the mesoporous MOF, NU-1000. Zn-AIM, which contains four Zn per Zr6 node, has been synthesized through AIM further characterized density functional calculations provide insight possible structure. Zn-AIM was then subjected modification via transmetalation yield uniform porous materials that present nonstructural Cu, Co, or...
Metal–organic frameworks (MOFs) provide convenient systems for organizing high concentrations of single catalytic sites derived from metallic or oxo-metallic nodes. However, high-temperature processes cause agglomeration these nodes, so that the single-site character and activity are lost. In this work, we present a simple nanocasting approach to thermally stable secondary scaffold MOF-based sites, preventing their aggregation even after exposure air at 600 °C. We describe NU-1000, MOF with...