A5065487329- Food Quality and Safety Studies
- Probiotics and Fermented Foods
- Enzyme Production and Characterization
- Microbial Metabolites in Food Biotechnology
- Organic Light-Emitting Diodes Research
- Gut microbiota and health
- Organic Electronics and Photovoltaics
- Biofuel production and bioconversion
- Protein Hydrolysis and Bioactive Peptides
- Agriculture, Soil, Plant Science
- Fermentation and Sensory Analysis
- Garlic and Onion Studies
- Microbial Inactivation Methods
- Biopolymer Synthesis and Applications
- Nutrition, Health and Food Behavior
- Conducting polymers and applications
- Luminescence and Fluorescent Materials
- Food composition and properties
- Genomics and Phylogenetic Studies
- Bacteriophages and microbial interactions
- Polyamine Metabolism and Applications
- Microbial Metabolism and Applications
- Fungal Biology and Applications
- Pharmacological Effects of Natural Compounds
- Phytase and its Applications
Gachon University
2016-2025
Sejong University
2024
Asan Medical Center
2005-2020
University of Ulsan
2005-2020
Ulsan College
2006-2020
Chonnam National University
2018
Samsung (South Korea)
2018
Samoo Architects & Engineers (South Korea)
2015
Seoul National University
2007-2014
Kyungnam University
2007-2011
The authors demonstrate that the reduction of quantum efficiency with increasing current density in phosphorescent light emitting diodes (PhOLEDs) is related to formation excitons hole transporting layer based on analysis emission spectra and exciton zone. Low roll-off a PhOLED was achieved using dual layers (D-EMLs) by confining near interface between layers. external maintained almost constant up 22mA∕cm2 (10000cd∕m2) adopting D-EMLs Ir(ppy)3 PhOLEDs, resulting high (ηext=13.1%) at luminance.
White OLEDs with high efficiency and color stability are developed by using energy level dopants. The white showed external quantum of 11.7% remarkable the variation CIE chromaticity coordinates less than (0.02, 0.01) between 10 cd m−2 5000 m−2. Moreover roll-off was low CRI value over 87. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2089/2008/adma200702435_s.pdf or from author. Please note: publisher not responsible content...
Efficient triplet harvesting from exciplexes by reverse intersystem crossing (RISC) is reported using a fluorescent molecular system composed of the 4,4′,4″-tris(N-carbazolyl)-triphenylamine and bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine. The exciplex forming material shows efficient delayed fluorescence emission. As result, almost 100% PL efficiency at 35 K 10% external quantum 195 are achieved exciplex. clearly demonstrates that significant proportion harvested through RISC.
One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within emitting layer. We synthesized and characterized a new hole blocking material containing silane triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl)-1,3,5-triazine (DTBT). Electrophosphorescent fabricated using as hole-blocking layer N,N′-dicarbazolyl-4,4′-biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy)3] showed maximum...
An organosilicate polymer, based on N,N'-diphenyl-N,N'-bis(4-((E)-2-(triethoxysilyl)vinyl)phenyl)biphenyl-4,4'-diamine (TEVS-TPD) with extended conjugation between the Si atom and aromatic amine, was prepared under mild conditions via sequential Heck sol-gel chemistry used as an alternative to poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), most widely planarizing hole injection/transport layer in solution-processed organic electronic devices. Spin-coating TEVS-TPD...
We report that an exciplex is formed at the interface between N,N′-dicarbazolyl-4-4′-biphenyl (CBP) and bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine (B3PYMPM), which are widely used as emitting layer (EML) host electron transporting (ETL) for high efficiency, green phosphorescent, organic light-emitting diodes (OLEDs), respectively. The intensity of emission almost proportional to inverse square fac-tris(2-phenylpyridine) iridium [Ir(ppy)3] concentration EML. Meanwhile, efficiency...
Exopolysaccharide (EPS)-producing
We report on the synthesis, DFT calculations and structure-property relationships of phosphorescent Ir(III) complexes with varied number position triphenylsilylphenyl substituents. The attachment dendritic group at pyridine part phenylpyridine ligand induced a stronger metal-to-ligand charge-transfer (MLCT) transition lower band-gap energy than did unfunctionalized complex, Ir(ppy)3. On other hand, phenyl ligand-centered (LC) transition. It was specifically found that excited state...
This study explored the potential of Lactococcus lactis subsp. CAB701 as a probiotic strain, focusing on its immunostimulatory properties. Despite adverse conditions in gastrointestinal environment, this strain exhibited remarkable survivability, evidenced by tolerance to acid, bile, and pancreatin, coupled with impressive ability adhere Caco-2 cells. It also significant antioxidant activity, similar established Lacticaseibacillus rhamnosus GG (LGG). Our research elucidates potent effects L....