Materials Literature
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CdSe quantum dots (QDs) were attached to the surfaces of nanocrystalline TiO(2) films functionalized with 16-mercaptohexadecanoic acid (MHDA). The solvent from which MHDA was adsorbed to TiO(2) determined the amount of adsorbed MHDA, the extent of ordering within monolayers, and the lability of MHDA-TiO(2) interaction…
The tite compound, lithium penta-sodium nona-molybdate, LiNa(5)Mo(9)O(30), was synthesized by solid-state reaction. The three-dimensional [Mo(9)O(30)](6-) framework is built up from MoO(6) octa-hedra and MoO(5) bipyramids, linked together by edges and corners. The framework delimits two types of inter-secting tunnels…
Energy transport in silicon film takes place through a phonon transport, which is important in cooling applications of photonic devices. Since the energy transport is transient, the transient effect should be considered in the analysis. In the present study, phonon transport in the two-dimensional silicon film with tr…
Earlier studies revealed that primary ammonium dicarboxylate ( PAD ) salts possessed gelling ability, and many such salts displayed a 1D columnar hydrogen bonded network (observed in primary ammonium monocarboxylate ( PAM ) salts) on either side of the dicarboxylate end of the anion. In the present study, a new series…
L-Amino-acid ligases (LALs) are enzymes which catalyze the formation of dipeptides by linking two L-amino acids. Although many dipeptides are known and expected to have medical and nutritional benefits, their practical use has been limited owing to their low availability and high expense. LALs are potentially desirabl…
MshB, a zinc-based deacetylase, catalyses a step in the mycothiol biosynthetic pathway that involves the deacetylation of 1-O-(2-acetamido-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcNAc-Ins), via cleavage of an amide bond, to 1-O-(2-amino-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcN-Ins) and acetate. In this s…
Abstract Hybrid organic–inorganic nanocomposites of poly(3,4‐ethylenedioxythiophene) (PEDOT) and silver or gold {PEDOT–metal (PEDOT–M) nano‐objects (M = Ag, Au) (particle diameter down to 60 nm)} were prepared by a one‐pot oxidative aqueous dispersion polymerization using ammonium persulfate as an oxidant and the corr…
Ausatmen, einatmen: Die Selbstorganisation eines amphiphilen Blockcopolymers führt zu Polymervesikeln, die eine reversible pH-induzierte Strukturatmung zeigen, einhergehend mit einer schaltbaren Fluoreszenz (siehe Bild). Mechanistische Studien belegen, dass die Quallen-artige Atmung und das Lichtemissionsverhalten auf…
Image quality is a key parameter of liquid crystal displays that has been shown to be adversely affected by ion adsorption on the interior surfaces of the liquid crystal display cell. This paper studies the correlation between ion adsorption and the dielectric properties of the alignment layers on the inside surface o…
We demonstrate propagation of plasmons in single crystalline silver nanostructures fabricated using a combination of a bottom-up and a top-down approach. Silver nanoplates of thickness around 65 nm and a surface area of about 100 μm(2) are made using a wet chemical method. Silver nanotips and nanowires are then sculpt…
Based on first-principles total-energy calculations, we investigate the electronic structure of bilayer graphene under a vertical electric field for various stacking arrangements. We find that the electronic structure of bilayer graphene near the Dirac point is robust against an external electric field and, with the e…
X-ray Scattering Semiconductor Analysis X-ray Instrumentation X-ray Theory Structural Properties of Materials.
Thermal decomposition of Zr(C(2)O(4))(2)·4H(2)O within an autoclave or in a conventional tube furnace at temperatures below 380 °C resulted in nano- and micron-sized ZrO(2), respectively. Reactions under autogenic pressure yielded monodisperse monoclinic (m) and tetragonal (t) ZrO(2) nanoparticles with an average diam…
The charge distribution on polyelectrolytes is a key factor, which controls their conformation and interactions. In weak polyelectrolytes, this distribution is determined by a number of factors, including the solvent conditions and local environment. In this work, we investigate charge distributions of chains end-graf…
Abstract Spherical silica particles were treated with a mixture of silane coupling agents with mercapto functional groups and dialkoxy or trialkoxy groups. The surface coverage, which indicates the number of layers covering the silica surface, was in the range from 1.6 to 6.0. The molecular mobility of the treated lay…
The effects of l -valine on the lateral growth of (011) and (120) surfaces of l -alanine are studied by combining molecular simulation and experimental studies. The growth of the (120) surface is significantly inhibited by l -valine, while the growth of the (011) surface is less affected. An intrinsic impurity effecti…
Abstract In this study, Ca2+‐montmorillonite (Ca2+‐MMT) and organo‐montmorillonite (OMMT) were modified by three compatibilizers with different degrees of polarity [poly(ethylene glycol) (PEG), alkyl‐PEG, and polypropylene (PP)‐g‐PEG]. PP/MMT nanocomposites were prepared by melt blending and characterized using X‐ray…
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…