Materials Literature
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Activated carbon was impregnated with copper salt and then exposed to reductive environment using hydrazine hydrate or heat treatment under nitrogen at 925 °C. On the obtained samples, adsorption of NO(2) was carried out at dynamic conditions at ambient temperature. The adsorbents before and after exposure to nitrogen…
A charge transport model allowing the description of electroluminescence in polyethylene films under ac stress is proposed. The fluid model incorporates bipolar charge injection/extraction, transport and recombination. The physics is based on hopping mobility of electronic carriers between traps with an exponential di…
Abstract We have studied the rare‐earth (R) dependence of the phonon and magnon scattering in hexagonal RMnO 3 (R = Tb, Dy, Ho, Er) thin films using Raman scattering spectroscopy. We found, as the ionic radius of R decreases from Tb to Er, the phonons shift to higher energies. Our results indicate that both the lattic…
Das Doppelrad erfunden: Ein gemischtvalenter [Mn32]-Cluster mit einer seltenen „Doppeldecker“-Radtopologie (siehe seinen Metall-Sauerstoff-Kern: MnIII blau, MnII pink, O rot) wurde entwickelt. Der Cluster ist bei weitem das kernreichste Beispiel seiner Art und zeigt einzelmolekülmagnetisches Verhalten mit der höchsten…
We have studied the electrical transport properties of thin film of a-S87Te13 nanorods. Initially, the glassy alloy of S87Te13 is prepared by melt-quenching technique. The amorphous nature of this alloy is verified by using X-ray diffraction technique. The nanorods of a-S87Te13 are synthesised on a glass substrate und…
The band gap of a semiconductor is one of its most fundamental properties. It is one of the defining parameters for applications, including nanoelectronic and nanophotonic devices. Measuring the band gap, however, has received little attention for quasi-one-dimensional materials, including single-walled carbon nanotub…
The Er doping effects on the structural, dielectric, ferroelectric, magnetic, and thermal properties of the hexagonal Ho${}_{1\ensuremath{-}x}$Er${}_{x}$MnO${}_{3}$ (0 \ensuremath{\leqslant} $x$ \ensuremath{\leqslant} 1) compounds synthesized by the solid-state reaction method have been investigated by Rietveld refine…
Versilbertes Origami: Durch den Einsatz von DNA-Strängen mit bestimmten Sequenzen können kovalent angebundene Zuckereinheiten gezielt in DNA-Origami-Strukturen eingebaut werden. Dieser Ansatz ermöglicht eine anschließende Synthese und In-situ-Immobilisierung von fluoreszierenden Ag-Nanoclustern an vorgegebenen Positio…
The effects of ZnO crystal defects and the ubiquitous defect fluorescence on the electronic properties of nanocrystal thin-films were determined. Films were prepared from particles prepared in DMSO with controllable defect fluorescence. Particles were determined to range in size from 5 to 12 nm on average, with little…
Abstract Iron‐mediated atom transfer radical polymerization using activators generated by electron transfer directly from the secondary fluorine atoms on the poly(vinylidene fluoride) (PVDF) backbone, using methyl methacrylate (MMA) and poly (ethylene glycol) methyl ether methacrylate (PEGMA) as the monomers, FeCl 3 ·…
Abstract Well‐defined multiarm star copolymers, hyperbranched poly(glycidol)‐ b ‐poly(ε‐caprolactone), with an average of 100–110 arms per molecule and a molecular weight of arms of 3000 g/mol (PGOH‐ b ‐PCL 30 ) and 1000 g/mol (PGOH‐ b ‐PCL 10 ) were synthesized by cationic ring‐opening polymerization of ε‐caprolacton…
Understanding the mechanism underlying the interactions between inorganic nanostructures and biological systems is crucial for several rapidly growing fields that rely on nano-bio interactions. In particular, the further development of cell-targeted drug delivery using metallic nanoparticles (NP) requires new tools fo…
Spangolite, Cu(6)Al(SO(4))(OH)(12)Cl·3H(2)O, is a hydrated layered copper sulfate mineral. The Cu(2+) ions of each layer form a systematically depleted triangular lattice which approximates a maple leaf lattice. We present details of the crystal structure, which suggest that in spangolite this lattice actually compris…
Kleine Tumoren sichtbar gemacht: Eine einfache Synthese, die ohne toxische Chemikalien auskommt, liefert stark magnetische einkristalline Eisen/Eisenoxid-Kern/Schale-Nanopartikel. Die Nanopartikel wirken als hoch effektive Kontrastmittel in der Kernspintomographie und ermöglichen den Nachweis von 1–3 mm kleinen Tumore…
This work aims at shading fundamental insights into mechanisms that dictate the composition and microstructure of polypropylene/poly(ethylene-co-propylene) (PP/EPR) in-reactor alloys produced by the multizone circulating reactor (MZCR) technology, a novel one for polyolefin production. For this purpose, this technolog…
The first heterobimetallic alkyl(trimethylstannoxy)zinc clusters with the formula [Me 3 SnOZnR] 4 (R = Me 1, Et 2 ) are facile accessible by the Brønsted acid−base reaction of trimethyltin hydroxide with the respective zinc dialkyls ZnR 2 (R = Me, Et). The resulting products 1 and 2 can be isolated as white solids in…
Fluorescent magnetic nanoparticles exhibit great application prospects in biomedical engineering. Herein, we reported the effects of hydrophilic silica-coated CdTe quantum dots and magnetic nanoparticles (FMNPs) on human embryonic kidney 293 (HEK293) cells and mice with the aim of investigating their biocompatibility.…
Large area fabrication of metal alloy nanoparticles with tunable surface plasmon resonances on low-cost substrates is reported. A UV excimer laser was used to anneal 5 nm thick Ag Au bilayer films deposited with different composition ratios to create alloy nanoparticles. These engineered surfaces are used to investiga…
Light, transformation, release! Self-assembly of a simple amphiphile with an azobenzene unit produced an organic nanotube with 20 nm inner diameter. The trans-to-cis photoisomerization of the azobenzene unit within the solid bilayer membranes of the nanotube induced the transformation to cylindrical nanofibers (see gr…
A novel mixed micelle made of Tween 80 and soybean phospholipids (S80) was prepared and used as the delivery system for paclitaxel (PTX), with the purpose of improving the stability, therapeutic index, and security of PTX in comparison with Taxol® injection. The micelle size, morphological features, dilution stability…