Materials Literature
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Ultrafast laser irradiation of planar Au nanoparticle arrays is shown to double the particle plasmon quality factor and to enhance second harmonic generation 40-fold. It is found that the irradiation induces a morphological change of nano-cylinders into asymmetric droplet-like shapes with reduced surface roughness wit…
Though multiwalled carbon nanotubes (MWCNTs) have shown great promise in biomedical applications, our understanding about their biocompatibility is limited. Here, COOH+ implantation was performed for MWCNTs in order to gain insight into how COOH+ implantation affected the cell growth and blood adsorption of MWCNTs. Th…
Highly active photocatalytic TiO2 nanotubes were successfully synthesised by hydrothermal treatment in base medium using commercial TiO2 powder as Ti–source. Non–metal doped TiO2 samples were made by post–synthesis using urea, thio–urea, ammonium fluoride and ethylene glycol as N, S F and C source. The obtained sample…
The present article reports on the speciation of As(V) and As(III) using aqueous biphasic extraction based on a polyethylene glycol–salt system. For the detection of these inorganic arsenicals the salts of As(V) and As(III) are converted to their respective arsenomolybdenum blues having the formulae [AsVMo4V Mo8VIO40]…
Many types of organosilicon dendrimers are known, but the carbosilane dendrimers are by far the most widely studied. This Viewpoint article describes the impact of a communication published in 1992 by Alexander van der Made, one of the pioneers in the field.
Four new coordination polymers, [Co(ppmdc)(H2O)2]n (1), [Ni(ppmdc)(H2O)2]n (2), [Mn(ppmdc)(H2O)]n (3) and {[Zn(ppmdc)(H2O)2]·H2O}n (4) (H2ppmdc = 2-(pyridin-4-yl)-4,6-pyrimidine dicarboxylic acid), have been synthesized by self-assembly of the newly designed H2ppmdc ligand and corresponding metal salts under hydrother…
The interaction of Pt 29 nanoparticles with pristine and reduced (110), (100), (011), and (001) SnO 2 surfaces has been modeled using the density functional theory method within the generalized gradient approximation (GGA). It has been demonstrated that, in some cases, the reduction of the surface leads to a considera…
Large multivesicular liposomes (LMVV) remotely loaded with bupivacaine (Bupisome) were previously demonstrated to be a stable, long-acting local anesthetic. We demonstrate that this is not the case for small unilamellar vesicles (SUV) of the same lipid composition also remotely loaded with bupivacaine. We show that th…
The layers of a Zn/Al layered double hydroxide (LDH) were doped with Dy3+ cations. Among some compositions, the Zn2+ : Al3+ : Dy3+ molar ratio equal to 30 : 9 : 1 presented a single crystalline phase. Organic anions with carboxylic, amino, sulfate, or phosphate functional groups were intercalated as single layers betw…
The anodization of a gold electrode in oxalic acid aqueous solution of different concentration has been investigated at different applied potentials, which enables the formation of nanoporous gold (NPG). Electrochemical measurements show that the electrochemically active surface areas of the as-anodized Au samples sho…
BACKGROUND: Low-intensity ultrasound is considered an effective non-invasive therapy to stimulate hard tissue repair, in particular to accelerate delayed non-union bone fracture healing. More recently, ultrasound has been proposed as a therapeutic tool to repair and regenerate dental tissues. Our recent work suggested…
Rheological and small angle neutron scattering (SANS) measurements are used to characterize the gelation of poly(9,9-dioctyl fluorene) in organic solvents. The effect of supersaturation over the system's structure and properties is quantified. A variable range of solvent compositions and temperatures are used to contr…
In this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamicmechanical analysis (DMA) and thermogravimetric analysis (TGA). The parameters for Avrami's equation were calcul…
It was found that free poly(3,3′′′-didodecylquaterthiophene) (PQT-12) unimer coils in solution had a significant effect on the formation of aligned fibrils in thin films. Long and parallel aligned nano-fibrils formed easily when more unimer coils existed in solution. In contrast, small rod-like crystals with a random…
A comprehensive method combining polymerization-induced colloid aggregation, silica coating, and high-temperature calcination is developed for the preparation of micro-sized magnetic colloidal nanoparticle cluster/silica (CNC/silica) microspheres. The silica shell stabilizes the inner micro-sized γ-Fe2O3 nanoparticle…
Sublimation-recrystallization phenomena occurring during the PVT growth of SiC single crystals are examined from the viewpoint of quasi-equilibrium phase transition using pressure-dependent Si-C binary phase diagrams.From the results obtained, it is concluded that a thermodynamic interpretation for the PVT growth is c…
Our study tested the susceptibility of biodegradable films to degradation in non-industrial composting conditions. The qualitative and quantitative changes in the films studied were shown by the tests of strength, weight loss, and microscopic images. After about 9 weeks of composting, many hollows and pits appeared in…
Used frying oil (UFO) obtained from industrial food preparation was evaluated as raw material to produce biobased resins suitable to be used as binder in printing inks (offset or typographic printers). The polymerization of UFO was compared with selected refined oils described in the literature to produce printing ink…
The complex-formation equilibria of the system Ni(II)/β-alaninehydroxamic acid (β-AlaHA, LH) have been studied in solution by using potentiometry, calorimetry, ESI mass spectrometry and UV-Visible spectrophotometry. A series of mononuclear and polynuclear species have been identified at different pH and for different…
A slurry sampling flame atomic absorption spectrometric method for sequential determination of Cu and Fe in airborne particulate matter (APM) collected on glass fiber filters is proposed. The method optimization was carried out using a dry powdered sample (filter + APM) mass of 50 mg, dispersed in 0.5 mol L-1 nitric a…