Materials Literature
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Abstract Background Electrospinning is a process of electrostatic fiber formation using electrical forces to produce polymer fibers from polymer solution in nano/micrometer scale diameters. Various polymers have been successfully electrospun into ultrafine particles and fibers in recent years, mostly in solvent soluti…
Eisernes Flachland: Zwei planare FeIIO4-Einheiten, die sich eine Kante teilen, wurden in einem Eisen(II)-silicat gefunden (siehe Struktur). Sie werden von tripodalen Silanolat-Liganden aufgespannt, die sich in situ aus einem Trisilanol bilden, wenn Eisen-Ionen zur Komplexierung zugesetzt werden. Die Verbindung nähert…
High surface area composites featuring metal nanostructures and diamond particles have generated a lot of interest in the fields of heterogeneous catalysis, electrocatalysis, and sensors. Diamond surfaces provide a chemically robust framework for active nanostructures in comparison with sp(2) carbon supports. The pres…
Sorption properties of porous copolymers 1-vinyl-2-pyrrolidone-divinylbenzene (VP-DVB) were investigated by thermogravimetry. Water, n -butanol and n -heptane were used as sorptives. The current studies were performed for VP-DVB copolymers which were synthesized under different condition and vary in terms of porous st…
Studies of the application of interlayers in diffusion bonding (DB) are reviewed. A method for the classification of these layers for DB of dissimilar materials is proposed. The role of the interlayers and their contribution to the formation of the joint in all stages of bonding are investigated.
Abstract Untreated jute‐fabric (JF) and triple‐super‐phosphate treated JF were incorporated in isotactic polypropylene (PP) to prepare sandwich composites. Untreated JF reinforced PP (UC) and treated JF reinforced PP composites (TC) were prepared using the compression molding technique at 180°C under a load of 5 tons.…
Abstract One commercial type of fumed silica modified with methoxy polyethylene glycol (mPEG) plasticizer was incorporated into polylactic acid (PLA) biobased polymer to improve its performance. The modification on silica was confirmed through Fourier transform infrared spectra, nuclear magnetic resonance, and TGA ass…
By calculating orbitally resolved Pauli susceptibilities within maximally localized Wannier orbital basis transformed from first principles band structures, we find that magnetism in Fe${}_{1+x}$Te still has its itinerant origin even without Fermi surface nesting, provided orbital modulation of particle-hole excitatio…
With Fenton’s reagent as the redox initiator, a granular hydrogel was prepared under ambient conditions, and then modified with polyaniline (PAN) to develop a composite adsorbent with enhanced adsorption selectivity for the heavy metals, such as the Cu–Ni system in this study. The results indicate that PAN-modified hy…
Zwischen den Schichten: Eine Abblätterungsmethode auf Basis einer austauschbaren festen Lösung (siehe Bild) wurde zur Herstellung sehr dünner Ti3Si0.75Al0.25C2(TSAC)-Nanoblätter entwickelt (Ti grün, Si lila, Al gelb, C grau). Die dadurch erhaltenen Nanoblätter verfügen über hervorragende thermische und mechanische Eig…
Thermally and chemically reduced graphene materials contain significant amounts of carbonaceous impurities that are similar in structure to amorphous carbon. Herein, we show that the claimed electrocatalytic activities of these materials for the oxidation of NADH, acetaminophen, and hydroquinone are mainly due to the…
Graphene, a two-dimensional giant-molecule of sp(2) -bonded carbon atoms, provides a perfect platform for studying free radical reaction chemistry in two-dimensions, which holds promise to control the chemical functionality of graphene. Free-radical photochlorination of graphene is used as an example to investigate th…
The multi-order Raman scattering is studied up to fourth order for a detwinned LaMnO3 crystal. Based on a comprehensive data analysis of the polarization-dependent Raman spectra, we show that the anomalous features in the multi-order scattering could be the sidebands on the low-energy mode at about 25 cm(-1). We sugge…
Mesoporous silica nanoparticles, MSNs, have emerged as an interesting carrier for drugs in vitro and in vivo. The particles are typically used in a surface functionalized form, where functional silanes or other covalently linked surface functions are used to provide anchoring sites for additional functionalities like…
Salts of 1,2,3-benzodithiazolium (1), 2,1,3-benzothiaselenazolium (3), and 1,2,3-benzodiselenazolium (4) (Herz cations), namely, [1][BF4], [1][SbCl6], [3][BF4], [3][GaCl4], [3][SbCl6], and [4][GaCl4], were prepared from the corresponding chlorides and NaBF4, GaCl3, or SbCl5. It was found that [1][SbCl6] and [3][SbCl6]…
OBJECTIVES: Microglial activation has been implicated in neurological disorders for its inflammatory and neurotrophic effects. We investigated the anti-inflammatory effect of the hexane fraction from Myagropsis myagroides (Mertens ex Turner) Fensholt ethanolic extract and its underlying molecular mechanism in lipopoly…
Bulk processing of porous silicon nanoparticles (nSi) of 50-300 nm size and surface area of 25-230 m(2)/g has been developed using a combustion synthesis method. nSi exhibits consistent photoresponse to AM 1.5 simulated solar excitation. In confirmation of photoactivity, the films of nSi exhibit prompt bleaching follo…
X-ray pair distribution function (PDF) analysis has been applied to five carbon-supported platinum nanoparticles with sizes ranging from 1.78(2) to 11.2(2) nm. Debye (θ D ) and Einstein (θ E ) temperatures were extracted from temperature-dependent PDF peak widths. A monotonic decrease in (θ D ) with nanoparticle diame…
Mechanical and optical properties of polycarbonate (PC) containing p -terphenyl ( p -tPh) are studied. It is found from the dynamic mechanical spectra that the addition of p -tPh greatly enhances the modulus in the glassy state due to the antiplasticizing effect. Moreover, p -tPh molecules dissolved in PC show marked…
Light up a red crown: Chelation of sodium and potassium cations by aza[15]crown-5 switches on strong red fluorescence in azaphthalocyanines. This is due to an inhibition of ultrafast intramolecular charge transfer by coordination of the cations to the donor center. Sodium cations fit well into a cavity of the recognit…