Materials Literature
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Solubility of a drug/drug candidate is one of the most important required physico-chemical properties in pharmaceutical area and nearly 40% of drug candidates fail to proceed to the higher trial phases of new drug development process because of their poor solubility. The commonly used method is to determine the experi…
Abstract BACKGROUND: On the basis of effective bioaffinity adsorption of Ag + , silver nanoparticles (Ag NPs) were synthesized on the surface of chitosan‐TiO 2 adsorbent (CTA) by TiO 2 photocatalysis for crystal growth. RESULTS: Among the microstructure characterizations of the resulting silver nanoparticles‐ loaded c…
A method for extracting the magnetization dependent part of the demagnetizing field from minor hysteresis loops is described. It applies to hard magnetic materials with irreversible magnetization switching. The method’s validity is tested on the simulated magnetization curves of an assembly of hard magnetic grains, as…
Abstract Most WPC extrusion manufacturers utilize single polymer systems, where only one class of polymers is utilized. The concept of utilizing blended polymer systems can potentially provide lowered material costs, while maintaining or improving the composite properties. This cost savings can potentially be obtained…
Excitonic effects of metallic single-walled carbon nanotubes are measured with temperature-dependent resonant Raman spectroscopy. By changing the temperature in the range of 300--870 K, we observe variations in the optical transition energy ${E}_{ii}$ as well as in the maximum Raman intensity. We find both dependences…
A catalytic hydrogen combustion reaction was carried out over noble metal catalysts substituted in ZrO(2) and TiO(2) in ionic form. The catalysts were synthesized by the solution combustion technique. The compounds showed high activity and CO tolerance for the reaction. The activity of Pd and Pt ion substituted TiO(2)…
Abstract A procedure is developed for modeling differential scanning calorimetry (DSC) melting curves of linear polyethylene and ethylene/α‐olefin copolymers produced with single‐center and multicenter polymerization catalysts. The modeling demonstrates that the use of the statistical description of random copolymers…
Abstract Polyethylene imines having nitro substituent azobenzene side chain group with different methylene spacer groups (PEImN) were successfully synthesized and characterized by differential scanning calorimetry, polarized optical microscopic, and X‐ray diffraction analysis. All synthesized polyethylene imines showe…
Abstract A die‐rotating system was proposed in this work for moderations of extrusion forces and entrance pressure drop for molten polypropylene (PP) and wood/polypropylene (WPP) composites in a capillary rheometer and a single screw extruder. The effects of processing conditions and wood loading in PP were of our int…
Le Diss (Ampelodesmos mauritanicus, famille des Poacées) est une grande graminée répandue dans l’Afrique-du-Nord méditerranéenne et les régions sèches de la Grèce à l`Espagne. En France, on la trouve dans les départements des Alpes-Maritimes, du Var, de la Corse-du-Sud et de l’Hérault. Cette plante était utilisée aupa…
Abstract A complex of Eu 3+ , acrylic acid (AA), and 1, 10‐phenanthroline (Phen) was synthesized. The structure and fluorescence of Eu(AA) 3 Phen was characterized with elemental analysis, FTIR, 1 H NMR, and fluorescence spectroscopy. A novel copolymer containing rare earth complex, poly(PEGMA‐ co ‐NIPAm‐ co ‐Eu(AA)3P…
We present analytical expressions for the polarizability ${P}_{\ensuremath{\mu}}({q}_{x},\ensuremath{\omega})$ of graphene modeled by the hexagonal tight-binding model for small wave number ${q}_{x}$ ($\ensuremath{\Gamma}\text{\ensuremath{-}}M$ direction) but arbitrary chemical potential $\ensuremath{\mu}$. Generally,…
We report on the significant generation of photocurrent (PC) from planar devices built from the drop casting of UV-laser-synthesized single-wall-carbon-nanotubes (SWCNTs) onto n-Si substrate. These SWCNTs/n-Si hybrid devices are shown to generate PC with external quantum efficiencies (EQE) reaching up to ∼10%. Their E…
Depending on the dendrimer charge density (CD), the complexes of DNA with polyamidoamine G4 dendrimer exhibited three distinct nanostructures, characterized by different degrees of DNA bending. With increasing CD, the structure transformed from a square columnar mesophase to hexagonally-packed superhelices and eventua…
Abstract A novel charring agent, poly( p ‐propane terephthalamide) (PPTA), was synthesized with terephthaloyl chloride and 1,2‐propanediamine through solution polycondensation at a low temperature. PPTA was used together with ammonium polyphosphate (APP) to prepare a novel intumescent flame retardant (IFR) for an acry…
We studied the photodynamics of the different-sized colloidal cubic SiC nanocrystals in distinct polar and nonpolar solvents. The UV-visible absorption spectral study indicates that the SiC nanocrystals with an average size of 4 nm retain an indirect energy gap; whereas the smaller quantum dots about 1 nm in size exhi…
The DNA cleavage activity of iron(II) complexes of a series of monotopic pentadentate N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine (N4Py)-derived ligands (1-5) was investigated under laser irradiation at 473, 400.8, and 355 nm in the absence of a reducing agent and compared to that under ambient lighting. A si…
Abstract A poly(trimethylene terephthalate) (PTT)/polypropylene (PP) blend and the nanocomposites were prepared with and without the addition of a compatibilizer precursor [maleic anhydride grafted polypropylene (MAPP)]. A reactive route was used for the compatibilization with the addition of MAPP during melt blending…
We show experimentally and analytically that for single-valued, isotropic, homogeneous, randomly rough surfaces consisting of bumps randomly protruding over a continuous background, superhydrophobicity is related to the power spectral density of the surface height, which can be derived from microscopy measurements. Mo…
Electrospray ionization mass spectrometry shows arylstibonic acids, p -XC 6 H 4 SbO 3 H 2 (X = methyl, nitro, or chloro), and 1-naphthylstibonic acid exist in MeCN as dodecanuclear aggregates [H 8 (RSb) 12 O 28 ]. With KOH or NaOH these form polyoxometalate ions [M 2 H 8 (RSb) 12 O 30 ] 2− (M = K or Na) with a hexagon…