A5043305097- Metal-Organic Frameworks: Synthesis and Applications
- Fuel Cells and Related Materials
- Magnetism in coordination complexes
- Solid-state spectroscopy and crystallography
- Advanced biosensing and bioanalysis techniques
- Covalent Organic Framework Applications
- Biosensors and Analytical Detection
- Perovskite Materials and Applications
- Organic and Molecular Conductors Research
- ZnO doping and properties
- Advanced Nanomaterials in Catalysis
- Enhanced Oil Recovery Techniques
- Semiconductor materials and interfaces
- Crystal structures of chemical compounds
- Parkinson's Disease Mechanisms and Treatments
- Chemical Synthesis and Characterization
- Quantum Dots Synthesis And Properties
- Lipid Membrane Structure and Behavior
- Mesoporous Materials and Catalysis
- Pigment Synthesis and Properties
- Nanoplatforms for cancer theranostics
- Gas Sensing Nanomaterials and Sensors
- Carbon dioxide utilization in catalysis
- Monoclonal and Polyclonal Antibodies Research
- Protein purification and stability
Ulsan National Institute of Science and Technology
2021-2025
Jeil Pharmaceutical (South Korea)
2016
Pohang University of Science and Technology
2013-2014
Sungkyunkwan University
2007
Abstract A metal–organic framework (MOF) having superprotonic conductivity, MOF‐808, is prepared by modulating the binding mode of sulfamate (SA) moieties grafted onto metal clusters. The activation SA‐grafted MOF‐808 at 150 °C changes SA from monodentate to bridging bidentate, thus converting neutral amido (‐S−NH 2 ) moiety more acidic cationic sulfiliminium (‐S=NH + moiety. Further, MOF‐808‐4SA‐150 results in efficient proton conduction than MOF‐808‐4SA‐60. At 60 and 95 % relative...
A few metal-organic frameworks (MOFs), which typically use strong acids as proton sources, display superprotonic conductivity (≈10-1 S cm-1 ); however, they are rare due to the instability of MOFs in highly acidic conditions. For first time, we report using a moderately guest, zwitterionic sulfamic acid (HSA), is encapsulated MOF-808 and MIL-101. HSA acts not only source but also proton-conducting medium its extensive hydrogen bonding ability zwitterion effect. new sustained concentration...
The fabrication of formamidinium lead iodide (FAPbI3) perovskite solar cells (PSCs) involves the addition methylammonium chloride (MACl) to promote low-temperature α-phase formation and grain growth. However, as added MACl deprotonates volatilizes into methylamine (MA0) HCl for removal, MA0 can chemically interact with (FA+), forming methyl (MFA+) a byproduct. Despite its significance, chemical interactions among FAPbI3 perovskites, additives, their byproducts remain poorly understood. Our...
Tumor hypoxia poses a significant challenge in photodynamic therapy (PDT), which uses molecular oxygen to produce reactive species upon light excitation of photosensitizer. For mitigation, an enzyme catalase (CAT) can be beneficially used convert intracellular hydrogen peroxide oxygen, but its utility is significantly limited due the intrinsic membrane impermeability. Herein, we present direct integration CAT into outer surface unmodified metal-organic framework (MOF) nanoparticles (NPs) via...
Abstract MOF‐74 is one of the most explored metal–organic frameworks (MOFs), but its functionalization limited to dative post‐synthetic modification (PSM) monodentate solvent site. Owing nature organic ligand and framework structure MOF‐74, covalent PSM very demanding. Herein, we report, for first time, amine‐tagged defective Ni‐MOF‐74, which prepared by de novo solvothermal synthesis using aminosalicylic acid as a functionalized fragmented ligand. The amino group generates metal binding...
Abstract A myriad of metal ions and organic linkers can be used to produce metal–organic frameworks (MOFs) with varied functionalities, porosities, dimensionalities. Such diversity has garnered significant research interest, particularly in leveraging MOFs as proton conductors for fuel cells. One effective approach involves introducing guest molecules into MOF pores. These serve either carriers or proton‐conducting media through potential hydrogen bonding networks. This review offers an...
A simple, sensitive, and selective colorimetric biosensor for the detection of malarial biomarkers Plasmodium vivax lactate dehydrogenase (PvLDH) falciparum LDH (PfLDH) was demonstrated using pL1 aptamer as recognition element gold nanoparticles (AuNPs) probes. The proposed method is based on aggregation AuNPs hexadecyltrimethylammonium bromide (CTAB). exhibited a sensitive color change from red to blue, which could be seen directly with naked eye monitored UV-visible absorption spectroscopy...
Targeted drug delivery systems based on metal-organic frameworks (MOFs) have progressed tremendously since inception and are now widely applicable in diverse scientific fields. However, translating MOF agents directly to targeted remains a challenge due the biomolecular corona phenomenon. Here, we observed that supramolecular conjugation of antibodies surface particles (MOF-808) via electrostatic interactions coordination bonding can reduce protein adhesion biological environments show...
α-Synuclein (α-Syn) is an intrinsically disordered protein, whose fibrillar aggregates are associated with the pathogenesis of Parkinson's disease. α-Syn associates lipid membranes and forms helical structures upon membrane binding. In this study, we explored helix formation in solution containing trifluoroethanol using small-angle X-ray scattering electrospray ionization ion mobility mass spectrometry. We then investigated structural transitions to via association large unilamellar vesicles...
It is challenging to selectively promote the two-electron oxygen reduction reaction (2e-ORR) since highly ORR-active electrocatalysts are not satisfied with 2e-ORR and most likely go all way 4e-ORR, completely reducing dioxygen water. Recently, however, possibility of a preference over 4e-ORR was raised by extensively considering multiple ORR mechanisms employing potential-dependent activity measure for constructing volcano plots. Here, we realized preferred via an intramolecular double...
A new synthetic approach for tunable mesoporous metal-organic frameworks (MeMs) is developed. In this approach, mesopores are created in the process of heat conversion highly mosaic framework (MOF) crystals with non-interpenetrated low-density nanocrystallites into MOF two-fold interpenetrated high-density nanocrystallites. The interpenetration reduces volume crystal, and accompanying localized agglomeration results formation among crystallite agglomerates. pore size can be easily modulated...
Incorporating functionality into the framework of metal-organic frameworks (MOFs) has attracted substantial interest because physical and chemical properties MOFs can be tuned by functionalizing pores. The ligand functionalization MOF-74 is challenging its pristine organic structure. Herein, we report a series ligand-functionalized Ni-MOF-74 derivatives synthesized defect engineering using mixed-ligand approach. Defect generation were simultaneously achieved incorporation fragmented ligands...
Abstract A few metal–organic frameworks (MOFs), which typically use strong acids as proton sources, display superprotonic conductivity (≈10 −1 S cm ); however, they are rare due to the instability of MOFs in highly acidic conditions. For first time, we report using a moderately guest, zwitterionic sulfamic acid (HSA), is encapsulated MOF‐808 and MIL‐101. HSA acts not only source but also proton‐conducting medium its extensive hydrogen bonding ability zwitterion effect. new sustained...
This research explores the alteration of metal–organic frameworks (MOFs) using a method called postsynthetic metal exchange. We focus on shift from Zn-based MOF containing [Zn4O(COO)6] secondary building unit (SBU) octahedral site symmetry (ANT-1(Zn)) to Fe-based one with [Fe3IIIO(COO)6]+ SBU trigonal prismatic (ANT-1(Fe)). The symmetry-mismatched transformation cleverly maintains MOF's overall structure by adjusting conformation flexible 1,3,5-benzenetribenzoate linker alleviate framework...
The 2D framework with guest molecules in the solvent pores shows reversible expansion and contraction, whereas without does not show under same conditions.
Chimeric metal–organic frameworks (CMOFs) composed of symmetry-mismatched inorganic and organic building blocks are rare because the interconnections between these topologically demanding. Herein, an MOF with symmetry-matched is used as a self-template for template-assisted synthesis CMOFs. Specifically, post-synthetic transformation [Zn4O(COO)6] clusters in self-templating into [Fe3IIIO(COO)6]+ trigonal prismatic site symmetry affords isoreticular CMOFs while maintaining template morphology...
Abstract MOF‐74 is one of the most explored metal–organic frameworks (MOFs), but its functionalization limited to dative post‐synthetic modification (PSM) monodentate solvent site. Owing nature organic ligand and framework structure MOF‐74, covalent PSM very demanding. Herein, we report, for first time, amine‐tagged defective Ni‐MOF‐74, which prepared by de novo solvothermal synthesis using aminosalicylic acid as a functionalized fragmented ligand. The amino group generates metal binding...
Abstract A metal–organic framework (MOF) having superprotonic conductivity, MOF‐808, is prepared by modulating the binding mode of sulfamate (SA) moieties grafted onto metal clusters. The activation SA‐grafted MOF‐808 at 150 °C changes SA from monodentate to bridging bidentate, thus converting neutral amido (‐S−NH 2 ) moiety more acidic cationic sulfiliminium (‐S=NH + moiety. Further, MOF‐808‐4SA‐150 results in efficient proton conduction than MOF‐808‐4SA‐60. At 60 and 95 % relative...
Fiber-reinforced plastic (FRP) is a material used to reinforce civil engineering structures. Carbon-fiber-reinforced (CFRP) composed of conductive reinforcing filler and dielectric matrix. By utilizing the internal structure CFRP difference in electrical conductivity components, carbon fiber (CF) resin matrix can serve as structural electrode frictional material, respectively. Electrostatic charge generated by friction between covering CF external materials. It induces an alternating current...