Materials Literature
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Nanoparticle one-dimensional photonic crystals (see image) possess high reflectivity arising from Bragg diffraction of light incident on a photonic lattice comprising nanoparticle layers of alternating refractive index. The nanoparticle layers provide mesoporosity, allowing for the introduction of a variety of functio…
A simple and facile method was developed to fabricate alloyed Pt−Ag nanoislands on Au nanorods (denoted as Au@Pt−Ag NRs). The island growth mode of Pt on the Au rod was employed to guide the growth behavior of Pt−Ag alloys. The formation of the Pt−Ag alloy was confirmed by scanning electron microscopy (SEM), transmiss…
Cost-effective biological saccharification of nonfood lignocellulosic biomass is vital to the establishment of a carbohydrate economy. Phragmites australis (common reed) is regarded as an invasive perennial weed with a productivity of up to 18−28 tons of dry weight per acre per year. We applied the cellulose solvent-…
Abstract Selektive Zersetzung von HCOOH zu H2/CO2 auf Au: Goldspezies katalysieren die HCOOH‐Dehydrierung effektiver als Platin, das bisher als aktivster Metallkatalysator galt. Die Geschwindigkeit der Formiatzersetzung ist durch die der H2‐Desorption von den Goldspezies bestimmt. Weniger als 10 ppm Kohlenmonoxid wurd…
The charge balance in blue-phosphorescent devices was studied using single-carrier devices, and the results show that the transport is highly hole dominant. The effect of the charge balance on the device performance was further demonstrated using different electron-transport materials with different electron mobilitie…
Multicompartment micelles, especially nanostructured vesicles, offer tremendous potential as delivery vehicles of therapeutic agents and nanoreactors. Solution-state self-assembly of miktoarm star terpolymers provides a versatile and powerful route to obtain multicompartment micelles. Here we report simulations of sol…
Abstract Here the influence that 1‐(3‐hexoxycarbonyl)propyl‐1‐phenyl‐[6,6]‐Lu3N@C81, Lu3N@C80–PCBH, a novel acceptor material, has on active layer morphology and the performance of organic photovoltaic (OPV) devices using this material is reported. Polymer/fullerene blend films with poly(3‐hexylthiophene), P3HT, donor…
We describe the results of a study at atomic resolution of the structures exhibited by polymer-capped monometallic and bimetallic Pt and Pd nanoclusters--models for nanoscale material electrocatalysts--as carried out using an aberration-corrected scanning transmission electron microscope (STEM). The coupling of sub-na…
Harbingers of single-chirality nanotubes: Lessons learned from recent syntheses of cyclophanes with record numbers of benzene rings embedded in the macrocycle (see picture) have brought chemists closer to the goal of obtaining structurally uniform single-walled carbon nanotubes made-to-order. The syntheses of the cycl…
Before life could start on earth, it was important that the amino acid building blocks be present in a predominant handedness called the L configuration and that the ribose of RNA be predominantly in the D configuration. Because ordinary chemical processes would produce them in equal L and D amounts, it has long been…
The paper describes the results of a physics analysis of a modified divertor cassette for ITER. The issues addressed are the impact on the operational window, the effect of gas leaks through the broader gaps between the divertor cassettes and radiation power loading of different components of the cassettes. The analys…
Within the present work, two series of novel ruthenium(II) phthalocyanine (RuPc) complexes with one [RuPcCOPy-nT] or two [RuPc(Py-nT)(2)] dendritic oligothiophene (DOT) ligands in the axial positions are reported. The ability of Ru(II) for axial coordination in RuPcs allowed the attachment of the Pc through the metal…
Cocrystals have been increasingly recognized as an attractive alternative for solid forms of drug products. In this work, nicotinamide (NCT) was employed as a cocrystal former with the active pharmaceutical ingredient theophylline (TP). The theophylline−nicotinamide cocrystal (hereafter TP-NCT cocrystal) was prepared…
A series of internal donor−acceptor type of copolymers containing benzothiadiazole and four thiophene rings (bis(2,2′-dithienyl)benzothiadiazole) in their repeating units were synthesized and characterized. The effect of the position of alkyl groups attached to different thiophene rings of the new polymers on their op…
Lasers on Si are crucial components of monolithic electronic-photonic integration. Recently our theoretical analysis has shown that Ge, a pseudodirect bandgap material compatible with Si complementary metal oxide semiconductor technology, can be band engineered by tensile strain and n-type doping to achieve efficient…
Highly productive: Grafted monolith silica skeleton microreactors process bulky molecules more efficiently than a batch mode reactor. This efficiency is due to a higher contact area, shorter diffusion path, and lower inhibition by products in the thin monolith skeleton. These materials provide a new approach in the fi…
Effective cell design variables having a large impact on the fill factor (FF) of organic photovoltaic cells (OPVCs) were systematically identified using a general device structure of ITO/PEDOT:PSS/P3HT + PCBM/LiF/Al. The results show that the characteristic properties of the organic layer, such as morphology and thick…
Selective HCOOH decomposition to H(2)/CO(2) on Au: Au species catalyze HCOOH dehydrogenation at higher rates than on Pt, previously considered the most active metal. Dehydrogenation occurs through formate decomposition limited by H(2) desorption on Au species undetectable by TEM. CO did not form (<10 ppm), making prod…
Microbial pathogenesis studies traditionally encompass dissection of virulence properties such as the bacterium's ability to elaborate toxins, adhere to and invade host cells, cause tissue damage, or otherwise disrupt normal host immune and cellular functions. In contrast, bacterial metabolism during infection has onl…
Molecular docking programs are widely used modeling tools for predicting ligand binding modes and structure based virtual screening. In this study, six molecular docking programs (DOCK, FlexX, GLIDE, ICM, PhDOCK, and Surflex) were evaluated using metrics intended to assess docking pose and virtual screening accuracy.…