Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A versatile, ultralight, N-doped, 3D graphene framework (GF) is prepared. In their Communication on page 11371 ff., L. Qu and co-workers show that this GF has an ultra-low density ((2.1±0.3) mg cm−3; a GF block can balance on a dandelion) and its adsorption capacity for oils is much higher than that of the best carbon…
Fe(III)-bearing phyllosilicates can be important sources of Fe(III) for dissimilatory microbial iron reduction in clay-rich anoxic soils and sediments. The goal of this research was to isolate Fe(III) phyllosilicate phases, and if possible, Fe(III) oxide phases, from a weathered shale saprolite sediment in order to pe…
The fundamental OD center in TiO${}_{2}$ has been studied by IR absorption spectroscopy and by theory. Our experiments reveal a single sharp OD line in oxygenated samples that we attribute to a positively charged center. In TiO${}_{2}$ samples reduced by a treatment in a D${}_{2}$ ambient at 500 \ifmmode^\circ\else\te…
Addition of polydispersed acid functionalised single-walled carbon nanotubes (AF-SWCNTs) significantly suppressed alloimmune cytotoxic T cell (CTL) response generated in a mixed lymphocyte reaction (MLR) between spleen cells from C57BL/6 (H-2(b)) and BALB/c (H-2(d)) mice. AF-SWCNTs treatment also decreased CD69 expres…
Abstract TiO 2 nanorods (NRs) were synthesized on fluorine‐doped tin oxide (FTO) pre‐coated glass substrates using hydrothermal growth technique. Scanning electron microscopy studies have revealed the formation of vertically‐aligned TiO 2 NRs with length of ∼2 µm and diameter of 110–128 nm, homogenously distributed ov…
The quasi-two-dimensional organic semiconductor \alpha-(BEDT-TTF)2I3 [BEDT-TTF=bis(ethylenedithio)tetrathiafulvalene] has an anisotropic linear dispersion with a zero energy gap near the Fermi level. Owing to the vanishing density of states at the Fermi level, the Coulomb interaction is unscreened in this material. We…
The nucleation, growth, and CO-induced changes in composition for Co–Au bimetallic clusters deposited on TiO 2 (110) have been studied by scanning tunneling microscopy (STM), low energy ion scattering (LEIS), X-ray photoelectron spectroscopy (XPS), temperature-programmed desorption (TPD), and density functional theory…
Cellulose acylation by anhydrides (ethanoic to hexanoic) plus tosyl chloride, TsCl, or imidazole in LiCl/N,N-dimethylacetamide solution has been studied. Contrary to a previous claim, TsCl does not catalyze acylation. For the diazole-catalyzed reaction, N-acylimidazole is the acylating agent. Third order rate constant…
This investigation demonstrates the contributions of absorption and scattering to the extinction spectrum of silver nanocubes with multipole resonances and the complexity of the resulting plasmon field strengths for these varying modes. The three-dimensional plasmonic field distribution and orientation around a silver…
This work presents the ultraviolet–visible spectroscopic properties of Ba 3 Y 2 ( BO 3 ) 4 : Ce 3+ , Tb 3+ phosphors prepared by a high‐temperature solid‐state reaction. Under ultraviolet light excitation, tunable emission from the blue to yellowish‐green region was obtained by changing the doping concentration of Tb…
Abstract The successful synthesis, characterization, and directed self‐assembly of a silicon‐containing block copolymer, poly(styrene‐ block ‐trimethylsilylisoprene) (P(S‐ b ‐TMSI)), which has much higher oxygen etch contrast than the de facto standard, poly(styrene‐ block ‐methyl methacrylate) is reported. A Sakurai,…
The amorphous phase of the chalcogenide material in phase-change memory (PCM) devices is sensitive to temperature-activated crystallization and structural relaxation (SR). The latter leads to a change of device/material properties, such as the mobility band gap, the resistance, and the threshold voltageVTfor threshold…
Ein beengter „Arbeitsbereich“ hat seine Vorteile, und zwar im Fall eines nicht-aciden festen Katalysators, der durch Einschluss von [CoIII(Salen)] in ein mesoporöses Kieselgel hergestellt wurde. Durch den kooperativen Effekt innerhalb der Nanokäfige erhöhte sich die katalytische Aktivität und Selektivität von [CoIII(S…
Electrical generation of heat in single-walled carbon nanotubes (SWNTs) and subsequent thermal transport into the surroundings can critically affect the design, operation, and reliability of electronic and optoelectronic devices based on these materials. Here we investigate such heat generation and transport character…
Our examination of the optical properties of small gold chains containing up to 24 atoms doped with a transition metal (TM) atom (Ni, Rh, Fe), using the time-dependent density functional theory, show the splitting of the collective plasmon peak. We associate the additional peak with a local plasmonic mode which corres…
The condensation products of salicylaldehyde and different diamines constitute an important class of diiminic Schiff bases (DSBs). This class of compounds has been rediscovered as reducing as well as capping agents under UV irradiation. UV irradiation of alkaline DSB solutions in the presence of water-soluble copper s…
Biodegradable poly(butylene adipate) (PBA) and uracil composites were prepared via a solution and casting method at low uracil loadings in this work. The isothermal melt crystallization rate has been increased apparently in the composites by the addition of uracil, which acts as a nucleating agent for the crystallizat…
The reactions of group 14 tetrachlorides MCl(4) (M=Si, Ge, Sn) with oleum (65% SO(3)) at elevated temperatures lead to the unique complex ions [M(S(2)O(7))(3)](2-), which show the central M atoms in coordination with three chelating S(2)O(7)(2-) groups. The mean distances M-O within the anions increase from 175.6(2)-1…
The diffusion pathways of lysozyme adsorbed to a model charged ionic surface are studied using fully atomistic steered molecular dynamics simulation. The simulations start from existing protein adsorption trajectories, where it has been found that one particular residue, Arg128 at the N,C-terminal face, plays a crucia…
We analyze magnetic order in Fe chalcogenide ${\mathrm{Fe}}_{1+y}\mathrm{Te}$, the parent compound of the high-temperature superconductor ${\mathrm{Fe}}_{1+y}{\mathrm{Te}}_{1\ensuremath{-}x}{\mathrm{Se}}_{x}$. Experiments show that magnetic order in this material contains components with momentum ${Q}_{1}=(\ensuremath…