A5101463037- Graphene research and applications
- Synthesis and Catalytic Reactions
- MXene and MAX Phase Materials
- Catalytic C–H Functionalization Methods
- Electrospun Nanofibers in Biomedical Applications
- Supercapacitor Materials and Fabrication
- ZnO doping and properties
- Boron and Carbon Nanomaterials Research
- Graphene and Nanomaterials Applications
- Thermal properties of materials
- Adsorption and biosorption for pollutant removal
- Synthesis and Characterization of Pyrroles
- Nanomaterials for catalytic reactions
- Synthetic Organic Chemistry Methods
- Advanced Photocatalysis Techniques
- Nanoparticles: synthesis and applications
- Catalytic Alkyne Reactions
- Carbon and Quantum Dots Applications
- Environmental remediation with nanomaterials
- Microbial Fuel Cells and Bioremediation
- Wound Healing and Treatments
- Magnetism in coordination complexes
- Mechanical and Optical Resonators
- Neuroscience and Neural Engineering
- Membrane Separation Technologies
Institute for Basic Science
2024
Sun Moon University
2022
Korea Institute of Science and Technology
2017-2020
Jeonbuk National University
2013-2017
Chonbuk National University Hospital
2015-2016
Jeonju University
2016
Government of the Republic of Korea
2016
Konyang University
2012-2013
Sogang University
2011-2013
Hankuk University of Foreign Studies
2012
Abstract The lack of cost effective, industrial‐scale production methods hinders the widespread applications graphene materials. In spite its applicability in mass flakes, arc discharge has not received considerable attention because inability to control synthesis and heteroatom doping. this study, a facile approach is proposed for improving doping efficiency N‐doped through by utilizing anodic carbon fillers. Compared (1–1.5% N) synthesized via process according previous literature,...
Abstract Research interest in boron nitride nanotubes (BNNTs) has increased after the recent success of large-scale BNNT syntheses using high-temperature-pressure laser ablation or high-temperature plasma methods. Nonetheless, there are limits to application and commercialization these materials because difficulties associated with their fine structural control. Herein, growth kinetics BNNTs were systemically studied for this purpose. The pressure nitrogen feed gas was varied while...
The morphological analysis of the end boron nitride nanotubes (BNNTs) using high-resolution transmission electron microscopy (HR-TEM) can provide valuable insight into growth mechanism in high temperature pressure (HTP) laser ablation where best quality BNNT materials be obtained so far. Two modes coexisting during synthesis process have been proposed based on HR-TEM observation and length analysis. One is root mode, which (BN) species formed via surface interaction between surrounding N2...
A new and efficient preparation of pharmacologically biologically important 2,5-disubstituted 6-azaindoles was achieved from cyclizations aziridin-2-yl dipropargylic alcohols as adducts two propargyl groups to ethyl 1-benzylaziridine-2-carboxylate. The sequential include pyrrole formation a novel base-catalyzed intramolecular acetylenic Schmidt reaction.
The heat generated from electronic devices such as light emitting diodes (LEDs), batteries, and highly integrated transistors is one of the major causes obstructing improvement their performance reliability. Herein, we report a comprehensive method to dissipate vast area by using new type graphene–carbon–metal composite film sink. unique porous that consists an electrospun carbon nanofiber with arc-graphene (Arc-G) fillers electrochemically deposited copper (Cu) layer showed not only high...
The authors studied the fabrication of a ring oscillator consisting organic inverters showing no hysteresis in output characteristics. They designed and fabricated with bootstrapping made pentacene thin-film transistors on plastic produced by self-organized process, exhibiting field-effect mobility ∼0.6cm2∕Vs, on/off current ratio 107, threshold voltage −5V. oscillation frequency 3kHz signal propagation delay 15μs per stage were achieved for an 11-stage supply 20V.
Polyhydroxylated pyrrolidines, such as biologically important azafuranoses represented by the natural product (+)-2,5-imino-2,5,6-trideoxy-gulo-heptitol and its C(3)-epimer, were elaborated from a commercially available enantiomerically pure (2R)-hydroxymethylaziridine highly stereoselective directed reactions in more than 61% overall yield. At first, nucleophile 2-trimethylsilyloxyfuran was to (2R)-aziridine-2-carboxaldehyde ZnBr2 yield unusual anti-addition single isomer via...
The properties and cost of anode materials are essential factors affecting the microbial fuel cell (MFC) performance.
In this work, we synthesized a monolayer of graphene and hexagonal boron nitride (hBN) using chemical vapor deposition. The physicochemical electrochemical properties the materials were evaluated to determine their morphology. High-purity atomic-scale coating on copper (Cu) foil employed prevent fast degradation rate. two-dimensional (2D) atomic structures as-prepared assessed derive best anti-corrosion behavior. material prepared under optimized conditions included edge-defect-free...
The title compound, C31H22N2, crystallizes with two symmetry-independent mol-ecules in the asymmetric unit. have slightly different conformations, dihedral angles between central phenyl ring and carbazolyl groups being 56.29 (4) 59.57 (4)° one mol-ecule 48.71 65.47 other. In crystal, are linked by weak C-H⋯π π-π [centroid-centroid distances = 3.7698 (10), 3.8292 (9), 3.9429 (10) 3.9431 Å].
Wastewater containing dyes and microbial bodies has attracted global attention because of the harmful effects on aquatic environment human health. A considerable amount are present in industrial effluents due to loss during processing products. The purpose this study was syntheses composite particle for effective removal from aqueous solution. For purpose, RGO supported nanocomposite prepared using hydrothermal treatment solution graphene oxide (GO), silver nitrate ferrous chloride...
Abstract Sequential ring opening of propargylic aziridines (I) and (IV) with acetic acid Ag(I)‐catalyzed nucleophilic recyclization provides a novel access towards hydroxymethylpyrrole derivatives (II) (V), resp., in moderate to good yields.
Abstract The natural product (VII) and its C(3)‐epimer are synthesized from commercially available enantiopure aziridine (I) by highly stereoselective transformations in 61% overall yield.