A5072607811- Quantum Dots Synthesis And Properties
- Nanomaterials for catalytic reactions
- Adipose Tissue and Metabolism
- Catalytic Cross-Coupling Reactions
- Nanocluster Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Muscle metabolism and nutrition
- Catalytic C–H Functionalization Methods
- Gold and Silver Nanoparticles Synthesis and Applications
- Muscle Physiology and Disorders
- Exercise and Physiological Responses
- Sirtuins and Resveratrol in Medicine
- Autophagy in Disease and Therapy
- Phytoestrogen effects and research
- Copper-based nanomaterials and applications
- Asymmetric Hydrogenation and Catalysis
- Adipokines, Inflammation, and Metabolic Diseases
- Bone Metabolism and Diseases
- Electrocatalysts for Energy Conversion
- MicroRNA in disease regulation
- Ginseng Biological Effects and Applications
- Food Quality and Safety Studies
- Nutrition and Health in Aging
- Conducting polymers and applications
- Mesoporous Materials and Catalysis
Seoul Women's University
2021-2025
Jeonbuk National University
2008-2023
Asan Medical Center
2023
Hyundai Heavy Industries (South Korea)
2023
Korea Food Research Institute
2015-2022
University of Toronto
2015-2022
Technion – Israel Institute of Technology
2015-2019
Incheon National University
2004-2019
Government of the Republic of Korea
2016-2019
Korea University
2013-2019
Much progress has been made over the past ten years on synthesis of monodisperse spherical nanocrystals. Mechanistic studies have shown that nanocrystals are produced when burst nucleation enables separation and growth processes is combined with subsequent diffusion-controlled process through which crystal size determined. Several chemical methods used to synthesize uniform metals, metal oxides, chalcogenides. Monodisperse CdSe, Co, other materials generated in surfactant solution by induced...
We synthesized Ni/Pd core/shell nanoparticles from the consecutive thermal decomposition of metal−surfactant complexes. The nanoparticle catalyst was atom-economically applied for various Sonogashira coupling reactions.
We have synthesized monodisperse Pd nanoparticles with particle sizes of 3.5, 5, and 7 nm from the thermal decomposition a Pd−surfactant complex. The size was controlled by varying concentration stabilizing surfactant.
"Attractive" catalyst: Molybdenum oxide nanoparticles have been incorporated into a mesoporous silica shell and coated on silica-coated magnetite for use as magnetically separable heterogeneous epoxidation catalyst. This catalyst, which has low Mo loading of 1 mol %, can be recycled reused six times in the cis-cyclooctene with no major loss activity (see picture). Supporting information this article is available WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z702386_s.pdf or from...
Sequential decoration of silica spheres by covalent bonding magnetite nanoparticles (blue) and attachment functional Au, CdSe/ZnS, or Pd (red) afforded multifunctional assemblies exhibiting combinations magnetism with surface plasmon resonance (Au), luminescence (CdSe/ZnS), catalytic activity (Pd), respectively.
We developed facile synthetic procedures to produce monodisperse palladium nanoparticles stabilized with various phosphine ligands by a better understanding of their coordination chemistry. Compared small sized phosphines such as triphenylphosphine (TPP), trioctylphosphine (TOP) showed weaker ability nanoparticles. This result was ascertained based on the 31P NMR spectroscopic results in situ generated molecular complexes. Since TOP acts more efficient surfactant preparation high quality...
Uniform palladium nanoparticles of various sizes and shapes are synthesized via a simple aqueous-phase reaction between Pd2+ ions PEOx–PPOy–PEOx triblock copolymers; the size shape controlled by varying conditions such as pH value (see image). The showed high catalytic activities for Suzuki cross-coupling reactions. Nanoparticles core base materials implementing nanotechnology in diverse areas. Because these exhibit interesting size- shape-dependent physical chemical properties, synthesis...
Heterostructured nanoparticles composed of metals and Fe3O4 or MnO were synthesized by thermal decomposition mixtures metal−oleate complexes (for the oxide component) metal−oleylamine metal component). The products included flowerlike-shaped Pt−Fe3O4 Ni−Fe3O4 snowmanlike-shaped Ag−MnO Au−MnO. Powder X-ray diffraction patterns showed that these face-centered cubic (fcc)-structured fcc-structured metals. relaxivity values Au−MnO Au−Fe3O4 similar to those nanoparticles, respectively....
A simple gram-scale synthesis of Pd-Fe(3)O(4) heterodimer nanocrystals was achieved by controlled one-pot thermolysis a mixture solution composed iron acetylacetonate, palladium oleylamine, and oleic acid. The are 6 nm-sized Pd nanosphere 30 faceted Fe(3)O(4) nanocrystal they soft ferrimagnetic with high saturation magnetization value low coercivity value. exhibited good activities for various Suzuki coupling reactions. Furthermore, the catalyst could be easily separated from product using...
A simple synthesis of Rh–Fe3O4 heterodimer nanocrystals was achieved by controlled one-pot thermolysis. The exhibited excellent activities for the selective reduction nitroarenes and alkenes. Furthermore nanocrystal catalyst could be easily separated a magnet, recycled eight times without losing catalytic activity.
Response rates to conventional chemotherapeutics remain unsatisfactory for hepatocellular carcinoma (HCC) due the high of chemoresistance and recurrence. Tumor-initiating cancer stem-like cells (CSLCs) are refractory chemotherapy, their enrichment leads subsequent development To overcome stemness in HCC, we synthesized a Pt nanocluster assembly (Pt-NA) composed assembled nanoclusters incorporating pH-sensitive polymer HCC-targeting peptide. Pt-NA is latent peripheral blood, readily targets...
// Hyein Jeon 1, 2, * , Jae Hwan Kim Eunjung Lee 3, Young Jin Jang 2,4 Joe Eun Son 2 Jung Yeon Kwon 5 Tae-gyu Lim 6 Sunghoon 7 Han Yoon Park 8 Jong-Eun Ki Won 1 Major in Biomodulation, Department of Agricultural Biotechnology and Research Institute for Agriculture Life Sciences, Seoul National University, Seoul, Republic Korea Advanced Institutes Convergence Technology, Suwon, 3 Traditional Alcoholic Beverage Team, Food Institute, Seongnam, 4 Metabolic Mechanism Group, Program Molecular...
We demonstrate a selective atomic layer deposition of TiO2 thin films on patterned alkylsiloxane self-assembled monolayers. Microcontact printing was done to prepare monolayers the Si substrates. The define and direct film using deposition. is based fact that selectively deposited only regions exposing silanol groups substrates because covered with do not have any functional group react precursors.
Abstract In den vergangenen zehn Jahren wurden bei der Synthese monodisperser sphärischer Nanokristalle große Fortschritte erzielt. Mechanistische Studien haben gezeigt, dass monodisperse entstehen, wenn sich an die schlagartige Keimbildung eine separate diffusionskontrollierte Wachstumsphase anschließt, Kristallitgröße festlegt. Eine Reihe chemischer Methoden wurde zur einheitlicher Metall‐, Metalloxid‐ und Metallchalkogenid‐Nanokristalle angewendet. Monodisperse aus CdSe, Co anderen...
Abstract We exploited the reactivity of an electronically biased Michael acceptor to perform a defluorinative α‐arylation reaction using chiral diene(L*)‐rhodium catalyst. Through this methodology, we are able obtain various secondary amides, containing tertiary α‐stereocenter and β,γ‐unsaturated gem ‐difluoro olefin, with excellent enantioselectivities. This methodology addresses limitations previously described methods construct stereo‐labile α‐stereocenters. Further investigation via in...
It was investigated whether apigenin (AP) protected against skeletal muscle atrophy induced by obesity.Mice were fed a high-fat diet (HFD) for 9 weeks to induce obesity, and then assigned two groups; the HFD group received diet, HFD+AP 0.1% AP-containing HFD. After additional feeding of experimental 8 weeks, mice in highly obese compared with standard group. The AP-treated showed less fat pad accumulation inflammatory cytokines without body weight reduction. AP tended increase as that...
We investigate the relation between chain length of ligands used and size nanocrystals formed in hot injection synthesis. With two different CdSe nanocrystal syntheses, we consistently find that longer carboxylic acids result smaller with improved dispersions. By combining a more in-depth experimental investigation kinetic reaction simulations, come to conclusion this tuning is due change diffusion coefficient solubility solute. The by ligand coordination solute further explored expanding...
Katalysator mit Anziehungskraft: Molybdänoxid-Nanopartikel wurden in eine mesoporöse SiO2-Schale eingebaut und auf SiO2-beschichtete magnetische Nanopartikel aufgebracht, die als magnetisch abtrennbare Heterogenkatalysatoren dienen. In der Epoxidierung von cis-Cycloocten kann Katalysator, niedrige Molydänbeladung 1 Mol-% hat, ohne größeren Aktivitätsverlust sechsmal rezykliert werden (siehe Bild).