Materials Literature
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Abstract Optimum processing conditions for the electrospinning of water‐soluble eggshell membrane (S‐ESM) were investigated. Two biocompatible polymers, poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA), were used to improve the processability of S‐ESM for electrospinning in aqueous media. Uniform nanofibers wi…
Abstract Cycloaliphatic epoxy hybrimer bulk was successfully fabricated by thermal curing of cycloaliphatic epoxy oligosiloxane resin synthesized by a sol‐gel condensation reaction with methylhexahydrophthalic anhydride (MHHPA) and tetrabutylphosphonium methanesulfonate (TBPM). The composition of MHHPA and TBPM in the…
Abstract Using glancing angle deposition (GLAD) by ion beam sputtering of Si on differently patterned substrates, periodically arranged Si nanostructures were obtained. Patterns with tetragonal, honeycomb‐like, and hexagonally closed packed (hcp) arrangement of the artificial seeds for the subsequent deposition at obl…
Sodium gadolinium fluoride nanocrystals have been prepared in the solvent N -(2-hydroxyethyl)-ethylenediamine (HEEDA) at 200 °C. The formation of the cubic and the hexagonal phase in the synthesis can be controlled by properly adjusting the concentration of fluoride and the ratio between sodium and gadolinium. The abs…
Discrimination of thin film elements by backscattered electron (BSE) imaging of field emission scanning electron microscope was examined. Incident electron acceleration voltage dependence on thin films' BSE intensities in five elements (Au, Ag, Ge, Cu and Fe) on a silicon substrate was experimentally measured from 3 t…
Abstract DFT and TDDFT calculations at the level of PBE0/6‐31G(d)/6‐31+G(d) were performed systematically on seven porphyrins with symmetrical meso‐substitutents. Our results show that the planarity of the free base porphyrin (BP) are affected by the introduction of substitutents at the meso‐position of the ring. Geom…
Computer simulations are used to investigate the stability of typical dislocations in uranium dioxide. We explain in detail the methods used to produce the dislocation configurations and calculate the line energy and Peierls barrier for pure edge and screw dislocations with the shortest Burgers vector ½⟨110⟩. The easi…
Herein we report two new ligands, 1,4,7-tris(carboxymethyl)-10-[2-(dihydroxyboranyl)benzyl]-1,4,7,10-tetraazacyclododecane (L(1)) and 1,4,7-tris(carboxymethyl)-10-[3-(dihydroxyboranyl)benzyl]-1,4,7,10-tetraazacyclododecane (L(2)), which contain a phenylboronic acid (PBA) function and a 1,4,7,10-tetraazacyclododecane-1…
Abstract Novel fluorinated polymer nanoparticles (PNPs) for 19 F MRI were prepared by living radical polymerization initiated by a dendrimer. The dendritic macroinitiator with Br substituents was synthesized from hydroxy‐group‐terminated G2 polyamidoamine dendrimers. The arborescent fluorinated polymers of 2,2,3,3‐tet…
Well-defined diblock copolymers have been prepared in which three different ferrocene-based monomers are combined with 1,1-dimethylsilacyclobutane (DMSB) and 1-methylsilacyclobutane, respectively, as their carbosilane counterparts. Optimized procedures are reported for the living anionic chain growth following sequent…
Abstract polyethylene oxide (PEO)/gelatin blend membranes of four different compositions (w/w) (5/95, 10/90, 20/80, and 30/70) were prepared by solution casting. The films were irradiated by gamma radiation at a total dose of 250 krad (dose rate of 321 krad/h). The X‐ray diffractograms demonstrate both the PEO and rad…
Abstract Poly(vinyl alcohol) (PVA) was structurally modified with two different types of chemicals under nitrogen atmosphere in the presence of Sb 2 O 3 as a catalyst at 80°C in an aqueous medium. An FTIR and NMR spectrum confirmed the structural modification of PVA. DSC and TGA counseled the thermal properties of str…
First-principles calculations based on density functional theory were performed to study the stable geometries, electronic structure and magnetic properties of the adsorption of a single Mn atom on a graphitic ZnO sheet and a (9, 0) single-wall ZnO nanotube. For the graphitic ZnO sheet, the Mn atom prefers to reside a…
Control freaks: Recent developments in the design of neutral multidentate pyridine ligands enable the controlled cross-linking of gold nanoparticles in solution (see picture). Impressive results opening the way for a highly controlled self-assembly of intimate nanoparticles are highlighted herein.
Abstract A novel electroactive polymer that has alternating oligo‐aniline and flexible poly(ethylene oxide) segments in the main chain has been synthesized through oxidative coupling polymerization. The chemical structure of the electroactive copolymer was confirmed using Fourier transform infrared and NMR spectroscop…
Abstract Linear polystyrene chains were grown from the convex surface of two commercially available multiwall carbon nanotubes (MWCNTs) with similar diameter but different lengths. The MWCNTs were supplied from Bayer Material Science® (purity >95%, external diameter = 13–16 nm, length = 1–10 μm, denoted MWCNT BMS 9…
We have studied stable strata of gravity-induced phase separation in suspensions of synthetic Na-fluorohectorite clay in saline solutions. We have observed how the strata depend on clay concentration as well as on salt content. The mass distribution and density variation at the isotropic-nematic interface indicate tha…
Abstract Morphological analyses of nanocomposites based on TPU and polyhedral oligomeric silsesquioxanes (POSS) was performed using different techniques (transmission electron microscopy, small‐ and wide‐angle X‐ray scattering, differential scanning calorimetry) as a function of molecular weight of poly(ethylene glyco…
Abstract The architecture and surface chemistry of a scaffold determine its utility in tissue engineering (TE). Conventional techniques have limitations in fabricating a scaffold with control over both architecture and surface chemistry. To ameliorate this, in this report, we demonstrate the fabrication of an Antherae…
Abstract: A study of five Reimeria taxa was performed based on light microscopy (LM) and scanning electron microscopy (SEM). The new species Reimeria fontinalis Levkov sp. nov. from Lake Ohrid (Macedonia) was compared to similar taxa, R. sinuata (W.Gregory) Kociolek & Stoermer and R. ovata (Hustedt) Levkov & Ector sta…