Materials Literature
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Phosphoglycerate dehydrogenases exist in at least three different structural motifs. The first D-3-phosphoglycerate dehydrogenase structure to be determined was from Escherichia coli and is a tetramer composed of identical subunits that contain three discernable structural domains. The crystal structure of D-3-phospho…
Triflate salts of three (Pt(pip2NCN))2(mu-L)2+ (pip2NCNH = 1,3-bis(piperidylmethyl)benzene) dimers bridged by a series of nitrogen-donor ligands (L = pyrazine (pyz), 1,2-bis(4-pyridyl)ethane (bpa), trans-1,2-bis(4-pyridyl)ethylene (bpe)) are reported. These complexes have been fully characterized by 1H NMR spectroscop…
A detailed magnetic study has been carried out for the air-synthesized $R\mathrm{Ba}{\mathrm{Co}}_{2}{\mathrm{O}}_{5+\ensuremath{\delta}}$ $(R=\mathrm{La}\mathrm{Ho})$ cobaltites. $R\mathrm{Ba}{\mathrm{Co}}_{2}{\mathrm{O}}_{5+\ensuremath{\delta}}$ compounds exhibit complex magnetic behavior depending on the rare eart…
Metal nanowires coated with multilayer films of (TiO2/W12O41)3(PAN/SWNT)3PAN (12 nm thick; PAN: Polyaniline; SWNT: single-walled carbon nanotube) are synthesized using different, templated, layer-by-layer assembly techniques. Their I–V characteristics indicate a built-in p–n junction at the TiO2/PAN interface (rectifi…
The interplay between different types of disorder and electron-electron interactions in graphene planes is studied by means of renormalization group techniques. The low-temperature properties of the system are determined by fixed points where the strength of the interactions remains finite, as in one-dimensional Lutti…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTEnvironmentally Benign Polyester Synthesis by Room Temperature Direct Polycondensation of Dicarboxylic Acid and DiolAkinori Takasu, Yoshitaka Iio, Yoshika Oishi, Yuuki Narukawa, and Tadamichi HirabayashiView Author Information Deapa…
Abstract Polyamide‐6 (PA6)/montmorillonite (MMT) nanocomposites toughened with maleated styrene/ethylene butylene/styrene (SEBS‐ g ‐MA) were prepared via melt compounding. Before melt intercalation, MMT was treated with an organic surfactant agent. Tensile and impact tests revealed that the PA6/4% MMT nanocomposite fr…
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTPolymer Blend Compatibilization by Gradient Copolymer Addition during Melt Processing: Stabilization of Dispersed Phase to Static CoarseningJungki Kim, Maisha K. Gray, Hongying Zhou, SonBinh T. Nguyen, and John M. TorkelsonView Author I…
Wurtzite-type single-crystalline AlN nanotubes with carbon coatings on the outer and inner surfaces (see Figure) were synthesized in bulk quantities through a substitution carbonitridation chemical process using multiwalled carbon nanotubes as templates. The AlN nanotubes are approximately several micrometers in lengt…
Polystyrene (PS)-grafted silica nanoparticles were prepared by nitroxide-mediated polymerization of styrene using N - tert -butyl- N -[1-diethylphosphono(2,2-dimethylpropyl)] nitroxide (DEPN) as mediator. Two routes were investigated to graft the alkoxyamine initiator onto silica. In the first route, (acryloxypropyl)t…
An attractive read: Magnetic Mn12 clusters are patterned by molding a dispersion in a polymer matrix onto a structured master (e.g., a DVD). The protrusions of the polymer replica surface disappear on exposure to solvent vapor, and the clusters concentrate on the surface at the positions of the original protrusions. T…
A novel spironaphthoxazine SOFC molecule with a stable ring-opened photomerocyanine form by incorporating a ferrocene moiety to the parent spironaphthoxazine has been synthesized. Two-dimensional luminescence images obtained by confocal microscope employing fluorescence as read-out method (see Figure) and three-dimens…
Reaction of Cu(II), [gamma-SiW10O36]8-, and N3- affords three azido polyoxotungstate complexes. Two of them have been characterized by single-crystal X-ray diffraction. Complex KNaCs10[{gamma-SiW10O36Cu2(H2O)(N3)2}2].26H2O (1) is obtained as crystals in few hours after addition of CsCl. This linear tetranuclear Cu(II)…
The Keggin anion, PW12O40(3-), is one of the most representative polyoxometalates (POMs). In recent years increasing theoretical work focused on this family of compounds has explained or even predicted some of their properties using quantum mechanics methods. In this report we applied for the first time molecular dyna…
We present a detailed analysis of the ion hopping dynamics and the related nearby oxygen dynamics in a lithium meta silicate glass via molecular dynamics simulation. For this purpose we have developed numerical techniques to identify ion hops and to sample and average dynamic information of the particles involved. Thi…
The short-range organization around Ni atoms in orthorhombic $R\mathrm{Ni}{\mathrm{O}}_{3}$ ($R=\mathrm{Pr}$, Nd, Eu) perovskites has been studied over a wide temperature range by Ni $K$-edge x-ray-absorption spectroscopy. Our results demonstrate that two different Ni sites, with different average Ni-$\mathrm{O}$ bond…
We describe a swelling-based method to prepare sterically stabilized polymer colloids with different functional groups or biomolecules attached to their surface. It should be applicable to a variety of polymeric colloids, including magnetic particles, fluorescent particles, polystyrene particles, PMMA particles, and s…
Molybdenum disulfide nanowires and nanoribbons have been synthesized by a two-step, electrochemical/chemical synthetic method. In the first step, MoO(x) wires (a mixture of MoO(2) and MoO(3)) were electrodeposited size-selectively by electrochemical step-edge decoration on a highly oriented pyrolytic graphite (HOPG) s…
Theoretical methods based on density functional theory have been employed to search for Prussian blue analogues with Curie temperatures higher than the ones reached today. Our study suggests several possible cyano-bridged compounds as candidates to present stronger exchange coupling and higher ordering temperatures th…
We report here the first example of peptide-functionalized gold nanoparticles hydrolytically active against carboxylate esters. The active units are constituted by His-Phe-OH terminating thiols. The confinement of the catalytic units in the monolayer covering the nanoparticles triggers a cooperative hydrolytic mechani…