A5100786285- Advanced Chemical Physics Studies
- Graphene research and applications
- Spectroscopy and Quantum Chemical Studies
- Molecular Junctions and Nanostructures
- Molecular Sensors and Ion Detection
- Crystallography and molecular interactions
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Electrocatalysts for Energy Conversion
- Photochemistry and Electron Transfer Studies
- Quantum and electron transport phenomena
- Perovskite Materials and Applications
- Molecular Spectroscopy and Structure
- Advanced Photocatalysis Techniques
- Supramolecular Chemistry and Complexes
- 2D Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Fuel Cells and Related Materials
- Graphene and Nanomaterials Applications
- Machine Learning in Materials Science
- Analytical Chemistry and Sensors
- Atmospheric Ozone and Climate
- Synthesis and Properties of Aromatic Compounds
- Quantum, superfluid, helium dynamics
Ulsan National Institute of Science and Technology
2016-2025
Seoul National University
1965-2024
Samsung (South Korea)
2006-2024
Chonnam National University
1992-2023
Korea Institute of Civil Engineering and Building Technology
1998-2023
National Research Council Canada
2023
Dongguk University
2004-2023
Northwestern University
1979-2022
Korea University of Science and Technology
2013-2022
Government of the Republic of Korea
2018-2021
Magnetite−graphene hybrids have been synthesized via a chemical reaction with magnetite particle size of ∼10 nm. The composites are superparamagnetic at room temperature and can be separated by an external magnetic field. As compared to bare particles, the show high binding capacity for As(III) As(V), whose presence in drinking water wide areas South Asia has huge problem. Their is due increased adsorption sites M−RGO composite which occurs reducing aggregation magnetite. Since near complete...
We report variation of the work function for single and bilayer graphene devices measured by scanning Kelvin probe microscopy (SKPM). By use electric field effect, can be adjusted as gate voltage tunes Fermi level across charge neutrality point. Upon biasing device, surface potential map obtained SKPM provides a reliable way to measure contact resistance individual electrodes contacting graphene.
The persistently increasing energy consumption and the low abundance of conventional fuels have raised serious concerns all over world. Thus, development technology for clean-energy production has become major research priority worldwide. globalization advanced conversion technologies like rechargeable metal–air batteries, regenerated fuel cells, water-splitting devices been majorly benefitted by apposite catalytic materials that can proficiently carry out pertinent electrochemical processes...
Graphene-substrate-promoted human neural stem cell adhesion and its differentiation into neurons is reported. Microarray studies were performed to explore plausible explanation for this effect. Further, an electrical stimulation on differentiated cells via graphene electrodes demonstrated. Detailed facts of importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by the authors. Please...
Abstract The sustainable and scalable production of hydrogen through evolution reaction (HER) oxygen (OER) in water splitting demands efficient robust electrocatalysts. Currently, state‐of‐the‐art electrocatalysts Pt IrO 2 /RuO exhibit the benchmark catalytic activity toward HER OER, respectively. However, expanding their practical application is hindered by exorbitant price scarcity. Therefore, development alternative effective for crucial. In last few decades, substantial effort has been...
We report the synthesis of single-crystalline silver nanowires atomic dimensions. The ultrathin wires with 0.4 nanometer width grow up to micrometer-scale length inside pores self-assembled calix[4]hydroquinone nanotubes by electro-/photochemical redox reaction in an ambient aqueous phase. present subnanowires are very stable under air and environments, unlike previously reported metal approximately 1 diameter, which existed only transiently ultrahigh vacuum. exist as coherently oriented...
Interactions involving aromatic rings are important in molecular/biomolecular assembly and engineering. As a consequence, there have been number of investigations on dimers benzene or other substituted π systems. In this Feature Article, we examine the relevance magnitudes their attractive repulsive interaction energy components governing geometries several π−π The associated binding energies were evaluated at complete basis set (CBS) limit coupled cluster theory with singles, doubles,...
A facile chemical route to synthesize the polypyrrole–reduced graphene oxide composite showing a highly selective Hg2+ removal capacity is reported. The gram scale production, high adsorption and recycling make this material practically useful for waste water treatment.
A pincer-like benzene-bridged sensor 1 with a pyrene excimer as signal source and imidazolium phosphate anion receptor was synthesized investigated for ATP sensing. unique switch of vs monomer fluorescence is observed in the presence due to charcteristic sandwich π−π stacking pyrene-adenine-pyrene. On other hand, four bases nucleoside triphosphates such GTP, CTP, UTP, TTP can interact only from outside already stabilized stacked pyrene-pyrene dimer 1, resulting quenching. The fluorescent...