A5014126698- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallography and molecular interactions
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Nanocluster Synthesis and Applications
- Machine Learning in Materials Science
- Organic and Molecular Conductors Research
- Porphyrin and Phthalocyanine Chemistry
- Electron Spin Resonance Studies
- Advanced Materials and Mechanics
- Conducting polymers and applications
- Supramolecular Self-Assembly in Materials
- Liquid Crystal Research Advancements
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Electric and Hybrid Vehicle Technologies
- Electric Vehicles and Infrastructure
- Advanced Condensed Matter Physics
- Pigment Synthesis and Properties
- Surfactants and Colloidal Systems
- Electrospun Nanofibers in Biomedical Applications
- Advanced Battery Technologies Research
- Nanofabrication and Lithography Techniques
Korea Advanced Institute of Science and Technology
2022-2025
University of California, Berkeley
2018-2023
Berkeley College
2020
Northwestern University
2013-2016
Illinois Institute of Technology
2005
Metal-organic frameworks are of interest for use in a variety electrochemical and electronic applications, although detailed understanding their charge transport behavior, which is critical importance enhancing conductivities, remains limited. Herein, we report isolation the mixed-valence framework materials, Fe(tri)2(BF4) x (tri- = 1,2,3-triazolate; 0.09, 0.22, 0.33), obtained from stoichiometric chemical oxidation poorly conductive iron(II) Fe(tri)2, find that conductivity increases...
Lithium-ion batteries have remained a state-of-the-art electrochemical energy storage technology for decades now, but their densities are limited by electrode materials and conventional liquid electrolytes can pose significant safety concerns. Lithium metal featuring Li anodes, solid polymer electrolytes, high-voltage cathodes represent promising candidates next-generation devices exhibiting improved power safety, such generally do not exhibit the required excellent properties thermal...
One-electron reduction of the complex [(TPyA)2FeII2(NPhL2–)]2+ (TPyA = tris(2-pyridylmethyl)amine, NPhLH2 azophenine N,N′,N″,N‴-tetraphenyl-2,5-diamino-1,4-diiminobenzoquinone) affords [(TPyA)2FeII2(NPhL3–•)]+. X-ray diffraction and Mössbauer spectroscopy confirm that occurs on NPhL2– to give an S 1/2 radical bridging ligand. Dc magnetic susceptibility measurements demonstrate presence extremely strong direct antiferromagnetic exchange between 2 FeII centers NPhL3–• in reduced complex,...
We demonstrate the potential utility of spin crossover iron(<sc>ii</sc>) complexes as temperature-responsive paramagnetic chemical exchange saturation transfer (PARACEST) contrast agents in magnetic resonance imaging (MRI) thermometry.
In nature, nonheme iron enzymes use dioxygen to generate high-spin iron(IV)=O species for a variety of oxygenation reactions. Although synthetic chemists have long sought mimic this reactivity, the enzyme-like activation O2 form iron(IV) = O remains an unrealized goal. Here, we report metal-organic framework featuring iron(II) sites with local structure similar that in α-ketoglutarate-dependent dioxygenases. The reacts at low temperatures are characterized using situ diffuse reflectance...
A series of four isostructural FeII2 complexes, [(TPyA)2Fe2(XL)]2+ (TPyA = tris(2-pyridylmethyl)amine; XL2– doubly deprotonated form 3,6-disubstituted-2,5-dianilino-1,4-benzoquinone; X H, Br, Cl, and F), were synthesized to enable a systematic study electronic effects on spin crossover behavior. Comparison X-ray diffraction data for these complexes reveals the sole presence high-spin FeII at 225 K mixtures low-spin 100 K, which is indicative incomplete crossover. In addition, crystal packing...
Abstract Property optimization through orientation control of metal–organic framework (MOF) crystals that exhibit anisotropic crystal structures continues to garner tremendous interest. Herein, an electric field is utilized post‐synthetically the conductive layered Cu 3 (HHTP) 2 (HHTP = 2,3,6,7,10,11‐hexahydroxytriphenylene) dispersed in electronically insulating poly(ethylene glycol) diacrylate (PEGDA) oligomer matrix. Optical and electrical measurements are performed investigate impact on...
Spontaneous mirror symmetry broken patterns based on the self-assembly of achiral molecules are developed for physical unclonable anticounterfeiting labels. Our chiral PUF shows remarkable performance, which enables next-generation security
The binding of O<sub>2</sub>at a four-coordinate cobaltous porphyrin site within metal–organic framework is examined through single-crystal X-ray diffraction, EPR spectroscopy, and O<sub>2</sub>adsorption measurements.
Materials that simultaneously exhibit permanent porosity and high-temperature magnetic order could lead to advances in fundamental physics numerous emerging technologies. Herein, we show the archetypal molecule-based magnet magnonic material V(TCNE)2 (TCNE = tetracyanoethylene) can be desolvated generate a room-temperature microporous magnet. The solution-phase reaction of V(CO)6 with TCNE yields V(TCNE)2·0.95CH2Cl2, for which characteristic temperature T* 646 K is estimated from Bloch fit...
Using improper wound care materials may cause impaired healing, which can involve scar formation and infection. Herein, we propose a facile method to fabricate cell-alignment scaffold, effectively enhance cell growth migration, leading the reproduction of cellular arrangements restoration tissues. The principle is scratching diamond lapping film that gives uniaxial nanotopography on substrates. Cells are seeded follow geometric cue via contact guidance, resulting in highly oriented...
Abstract The fabrication of liquid crystalline (LC) organogel via supramolecular interactions between Deoxyribonucleic acid (DNA) and lyotropic cationic surfactant containing cyanobiphenyl moiety is reported. fabricated endows dominantly viscous behavior in dimethyl sulfoxide (DMSO) elastic n‐propanol (n‐PrOH), respectively. By judiciously controlling the viscosity, DMSO organogels can be drawn to form a fiber with an elongation up 4.6 × 10 3 %, emphasizing extraordinary stretchability....
Metal-organic frameworks (MOFs) represent crystalline materials constructed from combinations of metal and organic units to often yield anisotropic porous structures physical properties. Postsynthetic methods align the MOF crystals in bulk remain scarce yet tremendously important fully utilize their structure-driven intrinsic Herein, we present an unprecedented composite liquid (LCs) MOFs demonstrate use nematic LCs dynamically control orientation with exceptional order parameters (as high...
Abstract Developing inorganic–organic composite polymers necessitates a new strategy for effectively controlling shape and optical properties while accommodating guest materials, as conventional primarily act carriers that transport inorganic substances. Here, universal approach is introduced utilizing mesoporous liquid crystal polymer particles (MLPs) to fabricate composites. By leveraging the phase, morphology are precisely controlled through molecular‐level arrangement of host, here...
This paper focuses on the effects of ultra-capacitors as a component energy storage in hybrid electric vehicles (HEV). The main source vehicle is battery. HEVs with battery sources are presently fairly effective; however, major drawbacks include cost and size such batteries. purpose this to demonstrate that addition system can reduce these significantly by reducing batteries required drive vehicle. To integrate into vehicles, ADvanced Vehicle SimulatOR (ADVISOR) was used. used conduct study...
We review in situ and post-synthetic methods for controlling the orientation of metal–organic frameworks. This highlights recent achievements approaches their implications sustainability green technologies.