- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Organic Light-Emitting Diodes Research
- Advanced Photocatalysis Techniques
- Advanced Memory and Neural Computing
- Ferroelectric and Piezoelectric Materials
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- 2D Materials and Applications
- Nanomaterials for catalytic reactions
- Polymer Surface Interaction Studies
- Electronic and Structural Properties of Oxides
- Luminescence and Fluorescent Materials
- Magnetic and transport properties of perovskites and related materials
- Molecular Junctions and Nanostructures
- Transition Metal Oxide Nanomaterials
- High Entropy Alloys Studies
- Optical properties and cooling technologies in crystalline materials
- Titanium Alloys Microstructure and Properties
- Quantum Dots Synthesis And Properties
Ewha Womans University
2020-2025
Chonnam National University
2022-2024
Jeonbuk National University
2020-2024
Sungshin Women's University
2023
Korea Research Institute of Chemical Technology
2022
Chungbuk National University
2022
Kyungpook National University
2015-2021
Yeungnam University
2020-2021
Ewha Womans University Medical Center
2020-2021
Jeonju University
2020
Homoleptic tris-cyclometalated iridium complexes, fac-Ir[5-(2-RCB)ppy]3 (3a-3c; CB = o-carboran-1-yl; ppy 2-phenylpyridinato-C(2),N; R H (3a), Me (3b), (i)Bu (3c)) with 2-R-substituted o-carboranes at the 5-position of ligand, were prepared and characterized. X-ray diffraction analysis 3a 3c revealed that three C^N ligands adopt a fac-arrangement around Ir atom carboranyl C-C bond distance increases increasing steric effects 2-R substituent. The phosphorescence wavelengths complexes...
High-quality CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> hybrid perovskite single crystal growth and outstanding optoelectronic application using the complete dissolution at low temperatures based on temperature solubility, which has been demonstrated for first time.
The poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) film is a promising material for electrodes, biomolecular sensor channels, and probes physiological signals because the electrical conduction of PEDOT:PSS tuned simply through electrochemical reaction with target analyte. However, forming specific morphology or nanostructure on thin films immersed in an aqueous solution still challenge. Herein, we report mechanism stepwise morphological change highly conductive layer...
Among various conductive polymers, the poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) film has been studied as a promising material for use transparent electrode and hole-injecting layer in organic optoelectronic devices. Due to increasing demand low-cost fabrication of light-emitting diodes (OLEDs), PEDOT:PSS employed top by using coating or lamination method. Herein, facile method is reported highly efficient polymer (PLEDs) based on laminated (LTE) consisting...
The enhancement of surface wettability by hydrophilic polymer coatings has been great interest because it used to address several technical challenges such as biofouling and fogging. Among the polymers, zwitterionic polymers have extensively utilized coat solid surfaces due their excellent capability bind water molecules, thereby forming dense hydration layers on surfaces. For these function appropriately surfaces, techniques for fixing onto with high efficiency are required. Herein, we...
Abstract Carbon nanotubes (CNTs), owing to their superior electrical and mechanical properties, are a promising alternative nonmetallic electrically conducting materials. In practice, cellulose as low‐cost sustainable matrix has been used prepare the aqueous dispersion of cellulose‐CNT (C‐CNT) nanocomposites. However, compatibility with conventional solution‐processing structural rearrangement for improving conductivity yet be determined. Herein, straightforward route conductive composite...
We report the facile growth of one-dimensional strontium rhodium oxide (Sr6Rh5O15) nanofibers with high crystallinity by utilizing an electrospinning process, followed thermal annealing. The Sr6Rh5O15 retain their characteristic fibrous nanostructure notably rough surface morphologies even after annealing at 900 °C, demonstrating outstanding structural durability harsh temperatures. crystal structure was examined through X-ray diffraction patterns combined Rietveld refinement, confirming...
Abstract Despite the emerging scientific interest in polymer‐based stretchable electronics, trade‐off between crystallinity and stretchability of intrinsically polymer semiconductors—charge‐carrier mobility increases as while decreases—hinders development high‐performance electronics. Herein, a highly semiconductor is reported that shows concurrently improved thin film upon thermal annealing. The films annealed at temperatures higher than their crystallization exhibit substantially (>...
To improve the peel strength and holding time of polypropylene glycol (PPG)-based pressure-sensitive adhesives (PSAs), a semi-interpenetrating polymer network (semi-IPN) was prepared using acrylic polymers. In addition, to prevent air pollution due volatile organic compound emissions avoid degradation physical properties residual solvent, PPG-based semi-IPN PSAs were fabricated by an eco-friendly solvent-free method monomer instead solvent. with different hard segment contents (2.9-17.2%)...
Although the efficiency of hybrid lead‐halide perovskite solar cells has been significantly improved, gap between small‐area and large modules continues to be a considerable challenge. Laser scribing is essential for realizing high‐quality monolithic connections; however, laser‐induced material changes their correlation with device performance have not yet well understood, in particular systems. In this study, effect P3 laser processing conditions on stability explained. The most interesting...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Yo-Han Kim, Minkeun Sewook Oh, Hunsang Jung, Yejin Tae-Sik Yoon, Yong-Sang Hyun Ho Lee; Organic memory device with polyaniline nanoparticles embedded as charging elements. Appl. Phys. Lett. 16 April 2012; 100 (16): 163301. https://doi.org/10.1063/1.4704571 Download citation file: Ris (Zotero) Reference Manager...
For this study, we applied activated biochar (AB) and its composition with magnetite (AB-Fe3O4) as adsorbents for the removal of polychlorophenols in model wastewater. We comprehensively characterized these performed adsorption tests under several experimental parameters. Using FTIR, confirmed successful synthesis AB-Fe3O4 composite through cetrimonium bromide surfactant. conducted using AB to treat wastewater containing polychlorophenols, such 2,3,4,6-Tetrachlorophenol (TeCP),...
Methylammonium lead trihalide perovskites CH3NH3PbX3 (X = Cl, Br, and I) have recently attracted huge attention as a promising candidate for highly efficient solar cell absorber materials. To understand the physical properties of halide perovskites, we investigated CH3NH3PbCl3 single crystal by Raman scattering spectroscopy from 80 K to room temperature. Benchmarking phonon modes their activities obtained density functional calculations, successfully assign molecular vibrations...
Diverse strategies have been developed to visualize latent fingerprints (LFPs) that are undetectable by the naked eye. Among them, fluorescence-based approaches emerged as an attractive method for enabling high-resolution LFP imaging. However, use of fluorescent probes detection remains challenging due cumbersome processing, low selectivity, and high background interference. Here, we demonstrate highly efficient, sensitive, background-free with dual-color emission arising from manganese...
Polarimetric phototransistors have attracted increasing interest due to their ability recognize the polarization state of incident linearly polarized light. However, advances in development been hindered by low sensitivity that results from modest dichroic ratios (PDRs) photoactive materials. In this study, we present polarimetric organic (P-OPTs) with a remarkably high exceeding 8.0. These P-OPTs are fabricated transferring highly stretched (∼200%) thin films polymer semiconductor,...
Investigations into the phase transition of Barluenga's reagent revealed a transient incommensurately modulated phase; structures are presented herein. To understand origin and chemistry that can affect it, analogues were synthesized studied. In this context, halogen anion easily be exchanged. Studying different led to development Ratchet Model describe behavior in solid state leading better understanding modulation class molecular crystal structure.