A5101443750- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Analytical Chemistry and Sensors
- Ionic liquids properties and applications
- Electrochemical sensors and biosensors
- Electrocatalysts for Energy Conversion
- Photochromic and Fluorescence Chemistry
- Advanced battery technologies research
- Synthesis and Biological Evaluation
- Photochemistry and Electron Transfer Studies
- Crystallization and Solubility Studies
- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- X-ray Diffraction in Crystallography
- Graphite, nuclear technology, radiation studies
- Fuel Cells and Related Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Extraction and Separation Processes
- Molten salt chemistry and electrochemical processes
- Liquid Crystal Research Advancements
- Polymer Nanocomposite Synthesis and Irradiation
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
Chungbuk National University
2023-2024
Kwangwoon University
2012-2022
Catholic University of Korea
2018
Ophthalmology Associates (United States)
2018
Yeouido St. Mary's Hospital
2018
Korea Atomic Energy Research Institute
2014
Korea Institute of Science and Technology
1995-2013
Kim's Eye Hospital
2011
St. Paul's Hospital
2010
Chungnam National University
2010
Plasma medicine is an upcoming research area that has attracted the scientists to explore more deeply utility of plasma. So, apart from treating biomaterials and tissues with plasma, we have studied effect soft plasma different feeding gases such as Air, N2 Ar on modification biomolecules. Hence, in this work used biomolecules proteins ((Hemoglobin (Hb) Myoglobin (Mb)), calf thymus DNA amino acids. The structural changes or been using circular dichroism (CD), fluorescence spectroscopy,...
Abstract Water electrolyzers powered by renewable energy are emerging as clean and sustainable technology for producing hydrogen without carbon emissions. Specifically, anion exchange membrane (AEM) utilizing non‐platinum group metal (non‐PGM) catalysts have garnered attention a cost‐effective method production, especially when integrated with solar cells. Nonetheless, the progress of such systems is hindered inadequate water electrolysis efficiency, primarily caused poor oxygen evolution...
Anion exchange membrane water electrolyzer (AEM electrolyzer) is an advanced technology for converting electrical energy into hydrogen with high efficiency and low cost. However, its advantages are diminished by...
We studied microcavity organic light-emitting devices with a microlens system. A for (OLED) was fabricated by stacks of SiO(2) and SiN(x) layers metal cathode together the array. Electroluminescence showed that color variation under viewing angle due to is suppressed remarkably arrays, which makes use acceptable in many applications. It also demonstrated external out-coupling factor devise increases ~1.8 wide angles compared conventional OLEDs.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTToward Conjugated Double Helical Ladder Polymers: Cyclooctatetrathiophene as a Highly Versatile ScaffoldMichael J. Marsella, In Tae Kim, and Fook ThamView Author Information Department of Chemistry University California at Riverside Riverside, 92521 Cite this: Am. Chem. Soc. 2000, 122, 5, 974–975Publication Date (Web):January 22, 2000Publication History Received8 November 1999Published online22 January 2000Published inissue 1 February...
In this work, we have explored the thermophysical properties of tetraalkylammonium hydroxide ionic liquids (ILs) such as tetrapropylammonium (TPAH) and tetrabutylammonium (TBAH) with isomers butanol (1-butanol, 2-butanol 2-methyl-2-propanol) within temperature range 293.15–313.15 K, interval 5 K over varied concentration ILs. The molecular interactions between ILs are essential for understanding function in related measures excess functions sensitive probe interactions. Therefore, calculated...
A yolk–shell structured Co 3 O 4 , with abundant voids and large surface areas, facilitated efficient mass transport enabled the implementation of high-performance anion exchange membrane water electrolyzer at high current density.
Effective electrocatalysts with high activity for oxygen evolution reactions (OER) play a crucial role in generating environmentally and sustainable hydrogen fuel via electrolysis. Currently, most highly active are synthesized through complex multisteps high-temperature heat treatments, which limit their industrial applications. Herein, we developed cobalt–copper–selenide (CoCuSe) electrocatalyst the OER simple electrodeposition hydrothermal method. CoCuSe showed exceptional by forming...
Di(3-thienyl)methanol (2) and di(3-thienyl)methane (3) have been synthesized screened against the T98G (brain cancer) cell line. Treatment induced death (MTT macro-colony assay), growth inhibition, cytogenetic damage (micronuclei formation), were studied as cellular response parameters. with compounds enhanced inhibition in a concentration dependent manner both HEK (normal) lines. At higher concentrations (>20 µg/mL) cytotoxic effects of highly significant. The effect on clonogenic...
In this paper, we have examined the conductivity and interaction studies of ammonium imidazolium based ionic liquids (ILs) with newly synthesised low bandgap polymer (Poly(2-heptadecyl-4-vinylthieno[3,4-d]thiazole) (PHVTT)). Use polymers is most suitable way to harvest a broader spectrum solar radiations for cells. But, still there lack efficient polymer. order solve problem, new investigated its ILs enhance conductivity. may undergo almost unlimited structural variations; these variations...
The anion-exchange membrane water electrolyzer (AEM electrolyzer) is an advanced technology for the sustainable production of green hydrogen. However, its commercialization has been hindered by relatively low performance, which necessitates use platinum group metal (PGM)-based electrocatalysts. Herein, we address this challenge developing a composite material consisting non-PGM-based amorphous Cu(OH)2 and ZIF-67. abundant defects in modification electronic structure, induced strong...
A series of poly(1-alkyl-2,5-pyrrylene vinylenes) (alkyl = methyl (1a), hexyl (1b), dodecyl (1c)) have been synthesized from the monomers, 1-alkyl-2,5-bis(thiophenylmethylene)pyrrole (2), by base-induced elimination and polymerization. Characterization polymers includes IR, 1H 13C NMR, UV−vis spectroscopy as well TGA molecular weight studies. Varying nitrogen substituent on pyrrole ring among methyl, hexyl, groups strongly affects their electrical properties. The resulting deep purple...
For the first time, we here propose a green methodology to modify low bandgap polymer for highly efficient solar cells using atmospheric pressure plasma jet or soft operating on different feeding gases (air, Ar and N2). The physical properties of modified were investigated conductivity measurements, UV-visible spectroscopy, photoluminescence X-ray photoelectron cyclic voltammograms, atomic force microscopy, cathodoluminescence confocal Raman spectroscopy. Further, examined variation work...
2,6-Didodecyl-4,8-diphenyl-benzo[1,2-d;4,5-d′]bisthiazole (3) and 2,6-didodecyl-4,8-dipyrrole-2-yl-benzo[1,2-d;4,5-d′]bisthiazole (5) were synthesized, their optical properties investigated in solution the solid state. Compounds 3 5 excited with 325 nm He−Cd laser line to produce blue green luminescence, respectively. The luminescence of (Φ = 14%) was more efficient than that 5%). Structural further determined DFT ZINDO calculations. planar structure results π → π* electronic transitions...
Supermolecular multilayers with high levels of compositional and structural complexities have been fabricated an example that involves formation stable host–guest complexes from bolaamphiphiles cyclodextrins, followed by sequential build-up multilayered films these in combination anionic polystyrene sulfonate polymer chains.
The authors studied the effect of thermal and electrical annealing on light emission fluorescent one-layered organic light-emitting devices (OLEDs) doped with salts. From annealed OLEDs, we clearly observed homogeneous enhanced electroluminescent (EL) over whole active area fast responses. Moreover, improved efficiency was also from phosphorescent OLEDs. These EL characteristics indicate that simultaneous can induce proper adsorption charged salt ions at electrode surfaces, leading to...
We present the results of a study highly circularly polarized unidirectional lasing emission from an organic device that consisted dye-doped cholesteric liquid crystal (CLC) layer on 1-dimensional (1-D) photonic (PC) reflecting mirror substrate. Unidirectional was demonstrated successfully for this structure at wavelength high-energy band edge CLC layer. It also shown produced low threshold 2.5 mJ/pulse. The handedness light corresponds to used with high ratio intensity between right- and...