Materials Literature
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Stable platinum nanoparticles were synthesized by the self-assembly of alkene derivatives onto the platinum surface, possibly forming platinum-vinylidene (Pt═C═CH-) or -acetylide (Pt-C≡) interfacial bonds as a result of dehydrogenation and transformation of the olefin moieties catalyzed by platinum. Transmission elect…
Diatoms possess a remarkable life cycle in which cell size decreases slowly during vegetative cell division and then increases rapidly via special expanding cells called ‘auxospores’, which are usually formed as a result of biparental sexual reproduction. However, auxospores are sometimes produced by single unpaired c…
One-way absorption can be obtained at terahertz frequencies in low-profile rod-type and multilayer dielectric structures with broken spatial inversion symmetry, which contain either a rod layer or an ultrathin homogeneous layer made of a polar dielectric. Perfect absorption for one of the two opposite incidence direct…
Centrifugal strategy is demonstrated to enable the design of hybrid nanocomposite films with controllable architecture, porosity, crack density and thickness.
Binaphthosemiquinones having characteristic blue colors owing to the small energy gaps are proved to show ambipolar transistor properties.
When the volume fraction exceeds the threshold, the colloidal particles would form a spanning cluster to realize percolation, which is affected by the shape of the particles, interaction between particles, etc. In this paper, we use the Monte Carlo method to study the structure and percolation of a system of one-patch…
Plasmon-assisted direct photocatalysis through enhanced light absorption in catalytic metal nanoparticles. Enhancement is achieved by coupling the plasmon resonance of a silver nanoantenna to that of a catalytic metal nanoparticle.
Abstract A series of novel aromatic polyimides were synthesized from N,N‐di(4‐aminophenyl)‐N′,N′‐diphenyl‐4,4′‐oxydianiline and aromatic tetracarboxylic dianhydrides through a conventional two‐step procedure. Most of the polyimides exhibited reasonable solubility in organic solvents and could afford robust films via s…
The concentration of nanoparticles in solution is an important, yet challenging, parameter to quantify. In this work, a facile strategy for the determination of nanoparticle concentration is presented. The method relies on the quantitative analysis of the inherent distribution of nanoparticle-ligand conjugates that ar…
A local structure formed by dilute In ions doped in ZnO was investigated by means of a nuclear spectroscopic technique and density functional theory (DFT) calculations. Comparative studies on a presumably isomorphous $\mathrm{CdI}{\mathrm{n}}_{2}{\mathrm{O}}_{4}$ unveiled the local structure: the impurity In ions form…
The effect of Mg loading on the high-frequency tunable properties and dielectric loss of Ba 0.8 Sr 0.2 Ti 1− x Mg x O 3 (BSTM) ceramics was investigated. Variation in the lattice parameters and the 90° domain configuration with Mg loading indicated a decrease in the tetragonal distortion. Additionally, the 90° domain…
Polyaniline (PANi) based composites were made by electric force assisted nanocasting. The PANi matrix was mixed with thermoelectric Bi–Te alloy nanoparticles. The uniform dispersion of the nanoparticles in the polymer was achieved via electric field assisted casting. The nanoparticles can enhance the thermoelectricity…
Herein, we report on the crystal structures of Nb 2 AlC and TiNbAlC—actual composition (Ti 0.45 ,Nb 0.55 ) 2 AlC—compounds determined from Rietveld analysis of neutron diffraction patterns in the 300–1173 K temperature range. The average linear thermal expansion coefficients of a Nb 2 AlC sample in the a and c directi…
The catalytic domain of the trimeric human Δ(3),Δ(2)-enoyl-CoA isomerase, type 2 (HsECI2), has the typical crotonase fold. In the active site of this fold two main chain NH groups form an oxyanion hole for binding the thioester oxygen of the 3E- or 3Z-enoyl-CoA substrate molecules. A catalytic glutamate is essential f…
The aim of this work was to investigate the barrier and comfort properties of protective uncoated and coated-impregnated three-layered knitted fabrics with different arrangements of special yarns, such as conductive yarns and yarns with different filament cross sections. Depending on content (7.5–30%) of conductive PE…
Although the molecular modeling of self-assembling processes stands as a challenging research issue, there have been a number of breakthroughs in recent years. This report describes the use of large-scale molecular dynamics simulations with coarse grained models to study the spontaneous self-assembling of capped nanop…
Room temperature detection of neptunyl(VI) LMCT emission in a coordination compound and in the presence of uranyl(VI) is reported for the first time. Differences in the excitation profiles of the complexes enable spectral editing so either exclusively neptunyl(VI) or uranyl(VI) emission is observed or a sum of the two.
Polymer surfaces were modified using methacrylate terpolymers containing both perfluoroalkyl (Rf) groups and poly(ethylene oxide) (PEO) as side chains in the same molecule. The structure and properties of the modified surfaces were evaluated using X-ray photoelectron spectroscopy and by measuring the dynamic contact a…
Abstract Natural‐gas‐fueled solid oxide fuel cell (NGSOFC) power systems yield electrical conversion efficiencies exceeding 55% and may become a viable alternative for distributed generation (DG) if stack life and manufacturing economies of scale can be realized. Currently, stacks last approximately 2 years and few sy…
Successful incorporation of pyrene-quinoxaline building units into benzimidazole-linked polymers leads to highly porous frameworks that are semiconducting and photoluminescent.