Materials Literature
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The effect of the strength of electrostatic and short-range interactions on the multilayer assembly of oppositely charged polyelectrolytes at a charged substrate was studied by molecular dynamics simulations. The multilayer buildup was achieved through sequential adsorption of charged polymers in a layer-by-layer fash…
In this Letter, we report on a crucial experiment showing that magnetic impurities reduce the ferromagnetic order temperature in thiol-capped Au glyconanoparticles (GNPs). The spontaneous magnetization of AuFe GNPs exhibits a fast decrease with temperature that contrasts with the almost constant value of the magnetiza…
Abstract Novel polyimide‐γ‐Fe 2 O 3 hybrid nanocomposite films (PI/γ‐Fe 2 O 3 ) has been developed from the poly(amic acid) salt of oxydianiline with different weight percentages (5, 10, 15 wt %) of γ‐Fe 2 O 3 using tetrahydrofuran (THF) and N , N ‐dimethylacetamide (DMAc) as aprotic solvents. The prepared polyimide‐γ…
Efficient front-illumination ultraviolet photodetectors have been developed using n-type ZnO nanorod arrays grown on p-type Zn0.9Mg0.1O-coated, (0001)-cut sapphire (Al2O3) substrate. Typical diode rectification behaviour and photoresponsivity were measured, revealing the photodetector's good sensitivity to incide…
The stability and trans-cis photoisomerization properties of a macrocycle constituted of two para-aminoazobenzene units connected by two methylene bridges have been investigated by a combination of experimental and computational techniques. Irradiation at 365 nm leads to a photostationary state in which only 50% of th…
The assembly of decatungstate isopolyanion [W 10 O 32 ] 4- and the [Ce(H 2 O)(DMF) 6 ] 4+ complex fragments lead to the formation of new compound [Ce(H 2 O)(DMF) 6 (W 10 O 32 )](DMF)(CH 3 CH 2 OH) that exhibits an unusual one-dimensional helical structure constructed by rare quadrivalent cerium-linking decatungstate b…
The traditional approach used to predict the ability of a glassy matrix to maximally preserve the activity of a protein solute is the glass transition temperature (T(g)) of the glass. Recently it has been shown that the addition of a low T(g) diluent (glycerol) can rigidify the structure of a high T(g) glassy matrix i…
Abstract Blends of polycaprolactone (PCL)/gelatinized starch and polybutylene succinate adipate/gelatinized starch have been prepared in various ratios and their phase morphology and thermal/mechanical properties have been analyzed. For both the PCL/plasticized starch and polybutylene succinate adipate/plasticized sta…
A small amount of ${\mathrm{Nb}}_{2}{\mathrm{O}}_{5}$ catalyst is known to substantially improve the desorption thermodynamics and kinetics of $\mathrm{Mg}{\mathrm{H}}_{2}$. Using density functional theory in combination with ab initio molecular dynamics simulation, we provide theoretical understanding of the mechanis…
For the synthesis of colloidal ternary ZnCdSe nanorods, CdSe nanorods were first prepared under a mixture of tetradecylphosphonic acid/trioctylphosphine oxide surfactants at 250 degrees C, and then ZnSe shell layer was grown onto CdSe nanorods at 180 degrees C, forming CdSeZnSe core/shell nanorods. Green-yellow emitti…
Solid amorphous cobalt oxysulfide “CoSOH” obtained by basic aqueous precipitation absorbs gaseous hydrogen up to a limit close to the H 2 /Co molar ratio of 0.5. To understand the nature of this phenomenon, the cobalt compound was characterized before and after hydrogen absorption (XRD, IR, TEM, XPS, inelastic neutron…
The relation between the concentration of free charge carriers and the concentration of copper atoms in Bi2Te3 single crystals doped with copper over a wide range of concentrations has been investigated, with the aim of clarifying the existence of inactive Cu ions. Changes in the concentration of free charge carriers…
Energy recovery is gaining importance in various transportation and industrial process applications because of rising energy costs and geopolitical uncertainties impacting basic energy supplies. Various advanced thermoelectric (TE) materials have properties that are inherently advantageous for particular TE energy rec…
Abstract Various blends of gelatinized cornstarch and two biodegradable polyesters, PCL or PBSA, were prepared via melt processing using a twin‐screw extruder. Distribution of a compatibilizer MDI (methylenediphenyl diisocyanate) was controlled through the processing conditions employed and its effect on the resultant…
High yields of MnS microspheres with novel hierarchical structure were prepared through a simple solution method. Field emission scanning electron microscopy and transmission electron microscopy analyses reveal that the microsphere has a core-shell structure: the interior hollow sphere is covered by a shell consisting…
Die richtige Taktik: Eine ausgeprägte heterotaktische Stereokontrolle kennzeichnet die Ringöffnungspolymerisation von rac-Lactid mit einer Reihe von Bis(phenolato)scandium-Komplexen (siehe Schema). An dieser Stereokontrolle scheint eine dynamische Monomererkennung als Folge der Umwandlung der Konfiguration von Λ zu Δ…
Abstract Composites of wood in a thermoplastic matrix (wood–plastic composites) are considered a low maintenance solution to using wood in outdoor applications. Knowledge of moisture uptake and transport properties would be useful in estimating moisture‐related effects such as fungal attack and loss of mechanical stre…
Brushing up: Experimental polymer-brush heights obtained for different footprint sizes, molecular weights, and surface-grafting densities are analyzed using recent scaling relations obtained from a coarse-grained model. The good agreement between the experimental and theoretical results indicates that the scaling pred…
Growth of gold nanorods is investigated in the presence of ascorbic acid in an aqueous mixed micelle solution of hexadecyltrimethyl ammonium bromide (CTAB) and tetraoctyl ammonium bromide (TOAB) through photochemical reduction of HAuCl 4 ·3H 2 O using 300 nm Hg lamps. The role of the ascorbic acid concentration, [H 2…
Several Schiff-base ligands readily form complexes with methyltrioxorhenium(VII) (MTO) by undergoing a hydrogen transfer from a ligand-bound OH group to a ligand N atom. The resulting complexes are stable at room temperature and can be handled and stored in air without problems. Due to the steric demands of the ligand…