Materials Literature
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The present study provides in detail experimental results on the synthesis and characterization of carbonized MnO2 nanowires for fabricating large surface area, high power and energy density rechargeable electrodes for supercapacitor/battery applications. High aspect ratio MnO2 nanowires carbonized with camphoric carb…
Reduced graphene oxide/polypyrrole (RGO/PPy) conductive composites were prepared by in-situ oxidative polymerization of pyrrole monomer in the presence of RGO under acidic condition. RGO used for the polymerization was previously prepared from natural graphite using modified Hummer's method, subsequently reduced using…
A general route for the functionalization of graphene and graphene derivatives with a low molecular weight polymer by thiol-radical reactions is reported. Polymer-modified graphene is employed as a filler for high density polyethylene to generate materials with good electrical conductivity.
Carbon-based supercapacitors typically have low energy density but high cycle lifetime relative to batteries. Surface functionalization can significantly increase charge storage through reversible faradaic reactions at the electrode/electrolyte interface, a phenomenon known as pseudocapacitance. However, pseudocapacit…
This contribution deals with the fabrication of electrodes and supercapacitor cells using a new dynamic air-brush deposition technique. This method yields highly uniform mats with finely tuned thickness and weight in a completely reproducible way. Using this deposition technique, we analyze the effect of mixtures of C…
Iron complexes derived from 6-diaminotriazyl-2,2'-bipyridines display spin crossover behaviour, and hydrogen bonding-controlled self-assembly with a suitable barbiturate partner can modulate the crossover from mixed low and high spin to high spin. This system is the first to use solution-phase self-assembly of complem…
In situ one-pot rapid layer-by-layer assembly of polymeric films as an active layer of a photoactive device via alternation of reductive and oxidative electropolymerization has been demonstrated. This novel fabrication without moving or changing experimental gears would be a powerful strategy to develop automated laye…
Block copolymers (BCPs) are seen as a possible cost effective complementary technique to traditional lithography currently used in the semiconductor industry. This unconventional approach has received increased attention in recent years as a process capable of facilitating the ever decreasing device size demanded. Con…
Carbon nanotube (CNT)/poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) nanocomposite films were fabricated using a solution mixing and evaporation method. The surface morphology, mechanical and electrical properties of these novel hybrid films were characterized by scanning electron microscopy (SEM), atomic forc…
A novel bis(merocyanine) dye has been synthesized and its folding and aggregation behavior has been elucidated in dependence on the solvent polarity. Extended cofacially π-stacked H-aggregates could be prepared in nonpolar solvents based on the preorganized folded dimer structure of the dye exhibiting a more than 120…
Uniform single-crystal graphene domains were synthesized on copper foils by atmospheric pressure chemical vapor deposition with activated carbon dioxide (CO2). Controlled growth of graphene domains with a shape evolution from hexagonal to round has been achieved by varying the flow rate of CO2. The excess CO2 passivat…
Synthesis and ring opening polymerization of a new γ-substituted ε-caprolactone monomer, γ-(2-methoxyethoxy)-ε-caprolactone is reported. Amphiphilic diblock copolymers comprised of poly[γ-(2-methoxyethoxy)-ε-caprolactone] and thermosensitive poly{γ-2-[2-(2-methoxyethoxy)ethoxy]ethoxy-ε-caprolactone} as the hydrophobic…
This paper reports, for the first time, the nonlinear optical property of β-HgBrCl, which was synthesized by a reaction of Hg2Cl2 and Br2 in EtOH. This reaction also gave α-HgBrCl. And the single crystal structures of both α- and β-HgBrCl are presented and compared. β-HgBrCl shows phase-matchable powder second harmoni…
We report an improved method to directly and accurately fabricate plasmonic nanostructures with ultrasmall gaps. The fabrication is based on high-resolution focused ion beam milling with closely packed nanoring patterns. With fine and precise adjustment of the ion beam, elegant plasmonic nanostructures with ultrasmall…
We report a role-switching method for preparing ultrafine water-dispersible silver nanoparticles with long-term stability based on a soft deformable block copolymer vesicle. Those ultrafine silver nanoparticles showed excellent antibacterial efficacy against both Gram-negative and Gram-positive bacteria with quite low…
The reaction of water soluble phosphine 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (DAPTA) with [Au(CC–C5H4N)]n yields a luminescent water soluble phosphine gold(I) alkynyl complex [Au(4-pyridylethynyl)(DAPTA)] that leads to the formation of a luminescent hydrogel. A small variation of the phosphine struc…
We report the simple preparation of the barium hexaaluminate (BaO·6Al2O3, BHA) with high surface area (BHA-HSA) (>100 m2 g−1) through a coprecipitation method using carbon black as the hard template. Ni catalysts supported on BHA-HSA (Ni/BHA-HSA) with different NiO loadings (10, 20, and 40 wt%) were investigated in CO…
We report, for the first time, an in situ formation of two-component hydrogels from pyridine derivatives of poly(aryl ether) dendrons and tartaric acid. The two-component system (dendron + acid) undergoes J-type aggregation, leading to fibrillar type self-assembly in THF-water mixture along with blue (470 nm) and gree…
Reliability issues significantly limit performance improvements from Moore's-Law scaling. At 45nm and below, electromigration (EM) is a serious reliability issue which affects global and local interconnects in a chip and limits performance scaling. Traditional IC implementation flows meet a 10-year lifetime requiremen…
Modular peptides displaying both quantum dot bioconjugation motifs and specific subcellular targeting domains were constructed using a chemoselective aniline-catalyzed hydrazone coupling chemistry. Peptides were ratiometrically assembled onto quantum dots to facilitate their specific delivery to either the plasma memb…