A5071274833- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Fullerene Chemistry and Applications
- Genomics and Phylogenetic Studies
- Plant Pathogenic Bacteria Studies
- solar cell performance optimization
- Microfluidic and Capillary Electrophoresis Applications
- Freezing and Crystallization Processes
- nanoparticles nucleation surface interactions
- Organic Light-Emitting Diodes Research
- Plant-Microbe Interactions and Immunity
- Machine Learning in Materials Science
- Nanowire Synthesis and Applications
- Semiconductor materials and interfaces
- Advanced battery technologies research
- Neuroscience and Neural Engineering
- Magnetic and Electromagnetic Effects
- Crystallization and Solubility Studies
- Enzyme Production and Characterization
University of Connecticut
2025
Hanbat National University
2008-2011
Korea Research Institute of Chemical Technology
2010-2011
Korea University
2010
Konkuk University
2008
The ability to control the lowest unoccupied molecular orbital (LUMO) level of an electron-accepting material is a critical parameter for producing highly efficient polymer solar cells (PSCs). Soluble bis-adducts C60 have great potential improving VOC in PSCs because their high LUMO level. In this work, we developed novel o-xylenyl bis-adduct (OXCBA) via [4 + 2] cycloaddition between and irreversible diene intermediate from α,α′-dibromo-o-xylene. OXCBA was successfully applied as electron...
Wearable and implantable bioelectronics that can interface for extended periods with highly mobile organs tissues across a broad pH range would be useful various applications in basic biomedical research clinical medicine. The encapsulation of these systems, however, presents major challenge, as such devices require superior barrier performance against water ion penetration challenging environments while also maintaining flexibility stretchability to match the physical properties surrounding...
HMX (cyclotetramethylene tetranitramine) was coated with NTO (3-nitro-1,2,4-triazole-5-one) by solution crystallization. Two-step coating crystallization investigated to enhance morphology. The first process using seed and the second obtained from were compared in terms of shape, surface, nucleation rate, metastable zone width, interfacial energy. objective this study examine how operating conditions affected surface morphology parameters such as type seed, concentration, cooling rate used...
In this article, we report the development of inkjet printing technique for fabrication bulk heterojunction organic photovoltaic cells (OPVs). We have demonstrated highly efficient OPV with a mixture poly(3-hexylthiophene)s (P3HT) and 1-[3-(methoxycarbonyl)propyl]-1-phenyl[6.6]C61 (PCBM) as an inkjet-printed photoactive layer. Especially, 3.8% power conversion efficiency (PCE) 0.68 V open circuit voltage ( oc ) can be obtained by using chlorobenzene solvent. This value is highest performance...
Abstract Ice crystalline layers were prepared from a binary eutectic mixture of acetic acid and water using layer melt crystallization. The obtained under the conditions cooling temperature at 269, 268, 267 K, feed compositions 0.5, 1.0, 5.0 wt% acid, rates 0.1, 1.0 K/min. After crystallization, sweating operations carried out for various in effect on impurity behavior inside was investigated. formed higher growth rate purified more easily by operations. Effective distribution coefficient...
For improving the power conversion efficiency and fill factor of organic photovoltaic cells (OPVs), molybdenum oxide (MoO 3 ) can be used as a buffer layer. In this study, we fabricated OPVs by inserting thin transparent layer between indium tin (ITO) photoactive layer, with configuration ITO/MoO (10 nm)/poly(3-hexylthiophene) (P3HT) [6,6]-phenyl C61 butyric acid methyl ester (PC 60 BM)/lithium fluoride (LiF)/Al. By spin-coating, device showed efficiencies high 4.2% under AM 1.5G (100 mW/cm...
Abstract The electron-accepting capability of fullerenes has made them interesting materials for organic photovoltaic cells (OPVCs). In this study, we propose the new methanofullerene derivatives incorporated with trimethylsilyl moiety to increase solubility without electron transporting property decrease. Methanofullerene acceptor having substituent (PCB-Sis) were synthesized from reaction fullerene substituted hydrazide type derivatives, electrochemical propertie was examined by...
Xanthomonas oryzae pv. (Xoo) causes bacterial blight in rice, which is one of the most devastating diseases rice-cultivating countries. The Xoo0880 (fabD) gene coding for a malonyl-CoA–acyl carrier protein transacylase (MCAT) from Xoo was cloned and expressed Escherichia coli. MCAT an essential enzyme that catalyzes key reaction fatty-acid synthesis bacteria plants: conversion malonyl-CoA to malonyl-acyl protein. FabD purified crystallized order elucidate its three-dimensional structure...
We report the PCDTBT {Poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)]}, an alternating copolymer of 2,7-carbazole and dithienyl-2,1,3-benzothiazole, has high molecular weight narrow distribution. Our can be successfully prepared as good yield by using tetrakis(triphenylphosphine)palladium [Pd(PPh3)4] catalyst instead Pd2dba3/P(o-Tol)3 catalyst. From UV/Vis absorption spectroscopy, we observe that bands are bathochromically shifted increasing...
Aiming at improving the phase behavior of OPVCs, we have designed and synthesized a series C60 C70 derivatives, which showed high electron mobility, affinity, good solubility. These methanofullerene acceptor materials having ethyleneoxy substituent, PCBEs, were from reaction fullerene or with each hydrizide. Device performances OPVC using mixture P3HT PCBEs as an active layer measured under illumination 100 mW/cm2 AM 1.5G simulated light. Pristine P3HT:compound 3 2.59% power conversion...