256 Result(s)
within
Yi**g Yong
Characterization and Evaluation of Materials
Nanochemistry
Polymer Sciences
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Article
Preparation of hollowTiO2 nanospheres with highly porous surface for effective nucleating agents in supercritical carbon dioxide foaming of thermoplastic polyurethanes
In this study, hollow nanospheres of titanium dioxide (TiO2) are prepared and utilized as potential nucleating agents in supercritical carbon dioxide (scCO2) foaming process of thermoplastic polyurethanes (TPUs) ...
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Article
Evaluation of the effect of molecular weight change of konjac glucomannan on antioxidant and tyrosinase activities
The purpose of this study was to characterize the biological activity of konjac glucomannan (KGM) according to its molecular weight change. KGM-degrading bacterial strain, N3 was isolated from soil and named Baci...
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Article
A study on the thermal aging characteristics of an electro-osmotic pump using a liquid crystal polymer as a packaging material
The generation of bubbles due to the poor barrier property of packaging materials with regard to gas or water permeability can be detrimental to the performance and stability of electro-osmotic (EO) pumps, as ...
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Article
Fluorene- and arylamine-based photo-crosslinkable hole transporting polymer for solution-processed perovskite and organic light-emitting diodes
Solution-processable techniques, including spin-coating, roll-to-roll printing, and ink-jet printing, are suitable for large-scale manufacturing and flexible displays owing to their cost-effective and simple f...
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Article
Effect of chemical structural properties of chitooligosaccharides on the immune activity of macrophages
The immunological effects according to the difference in the degree of deacetylation (DD) and molecular weight (MW) of chitosan purified from Hermetia illucens larvae were investigated. The DD of purified high mo...
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Article
Phytic Acid-Enhanced Electrospun PCL-Polypyrrole Nanofibrous Mat: Preparation, Characterization, and Mechanism
In this work, a polycaprolactone (PCL) electrospun mat was prepared by the electrospinning method, and polypyrrole (PPy) was coated by in situ chemical polymerization in the presence of phytic acid (PA). Signi...
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Article
Mechanical and Cell-Adhesive Properties of Gelatin/Polyvinyl Alcohol Hydrogels and Their Application in Wound Dressing
Gelatin/polyvinyl alcohol (PVA) (g/P) porous hydrogels are chemically and physically crosslinked to evaluate the influence of the g/P weight ratio on the mechanical properties and cell adhesion behavior of the...
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Article
Precipitation-Mediated PEGylation of Plant-Derived Nanovesicles
Recently, plant-derived nanovesicles have attracted interest in the field of regenerative medicine because of their abundant immune-regulatory RNAs and phytochemicals with cell proliferation activity. However,...
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Article
Molecular Weight Determination of Chitosan with Antibacterial Activity Using Matrix-Assisted Laser Desorption/Ionization-Time of Flight Mass Spectrometry Analysis
The antibacterial effect of chitosan with different molecular weights was investigated to define their potent biological activity. Both chitosan hydrolysates designated to CTSN-P30 and CTSN-B8 derived from the...
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Article
Do** and Thermoelectric Behaviors of Donor-Acceptor Polymers with Extended Planar Backbone
The design of a conjugated polymer backbone influences the charge transport and do** efficiency; however, the construction of the polymer backbone for maximized thermoelectric performance is still unclear. H...
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Article
CO2/Propylene Oxide Copolymerization with a Bifunctional Catalytic System Composed of Multiple Ammonium Salts and a Salen Cobalt Complex Containing Sulfonate Anions
A (Salen)Co(III) complex tethering four quaternary ammonium salts with covalent bonds is one of the most highly active catalysts for CO2/epoxide copolymerization. In this work, we aimed to prepare similar (Salen)...
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Article
Enhancement of Tensile Strength and Shape Recovery Characteristics of Grafted Polyurethane Using Melamine as a Crosslinking Agent
Melamine was grafted to a polyurethane (PU) frame and utilized for cross-linking PU via amino groups. The degree of crosslinking and the solution viscosity increased notably after grafting melamine due to the ...
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Article
Synthesis and Characterization of Dual-Sensitive PAMAM Derivatives Conjugated with Enzyme Cleavable Peptides as Gene Carriers
Nonviral vectors have the potential for gene delivery comparable to viral vectors given their productive and economic advantages. However, the low transfection efficiency and specificity of nonviral vectors li...
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Article
Large-Scale and High-Resolution Patterning Based on the Intense Pulsed Light Transfer of Inkjet-Printed Light-Emitting Materials
In this study, we present a hybrid fabrication method using the intense pulsed light transfer of inkjet-printed light-emitting materials for large-scale and high-resolution patterning. The surface morphology o...
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Article
Introducing an Organic Hole Transporting Material as a Bilayer to Improve the Efficiency and Stability of Perovskite Solar Cells
Although perovskite solar cells (PSCs) have achieved high power conversion efficiency (PCE) by utilizing 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamine)-9,9′-Spirobifluorene (Spiro-OMeTAD) as hole transporting m...
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Article
Editorial
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Article
Impact of Intermolecular Interactions Between a Diketopyrrolopyrrole-Based Conjugated Polymer and Bromobenzaldehyde on Field-Effect Transistors
In this study, intermolecular interactions were investigated for increasing the charge carrier mobility of organic field-effect transistors (OFETs) based on a conjugated polymer. A diketopyrrolopyrrole (DPP)-b...
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Article
Improved Electron Transport in Ambipolar Organic Field-Effect Transistors with PMMA/Polyurethane Blend Dielectrics
We report improved electron transport in solution-processed ambipolar organic field-effect transistors (OFETs) employing polymer dielectric blends of low-k poly(methyl methacrylate) (PMMA) and polyurethane (PU) e...
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Article
Facile Synthesis of Fluorine-Doped Hollow Mesoporous Carbon Nanospheres for Supercapacitor Application
Hollow mesoporous carbon nanospheres doped with fluorine (FHMC) were synthesized for high-performance supercapacitor applications. Monodisperse nanospheres with a copolymeric core-silica shell were produced by...
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Article
Investigation of Aluminate Coupling Agent as Modifier and Its Application on Improving Flame Retardant of Intumescent Flame Retardant Coatings
Intumescent flame retardant coating modified by aluminate coupling agent were prepared via sol-gel method using ammonium polyphosphate, Polyacrylamide, aluminate coupling agent (ACA), and boron nitride (BN). T...
