Materials Literature
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A novel strategy was utilized to develop a stable probe based on thiolated poly(ethylene glycol) (SH-PEG) and polyacrylic acid (PAA) functionalized gold nanorods (GNRs), following the attachment of an anti-cancer drug, doxorubicin (DOX), to obtain PAA-PEG-GNRs@DOX assemblies. Importantly, the obtained probe as a novel…
The main advantage of ceramic-metal composites is the increase of fracture toughness of the brittle ceramic matrix. The slip casting method gives the possibility to obtain products of complicated shapes without green machining.
Herein we present the synthesis and the photochemical behavior of several new hemicarcerands containing anthracene units as photoactive species. By means of NMR investigations of compounds 9 and 11 the dimerization mode was revealed as a 9,10-9',10'-dimerization, classically known from anthracene. Nevertheless only co…
Colloidal silver nanoparticles were prepared by reducing silver nitrate with oxalic acid in presence of cetyltrimethylammonium bromide (CTAB). The synthesized silver particles show an intense surface plasmon band in the visible region. The work reported in this paper describes the effect of concentration of various ad…
The increasing use of bioabsorbable polymeric materials in medicine has stimulated researchers in the materials field to search for solutions for the replacement of metallic artifacts by bioabsorbable polymers. Therefore, this study describes the in vitro degradation of PHBV, PCL and the blends of these polymers, both…
In this paper, a novel method for the preparation of surface modified polymer films is proposed, by the vaporization of polyhedral oligomeric silsesquioxanes (POSS) and reaction on the polymer surface. This method was successfully applied to the grafting of an amino-functionalized POSS (POSS-NH2) on poly(styrene-co-ma…
The double layer of electrode/electrolyte interfaces plays a fundamental role in determining the performance of solid state electrochemical cells. The double layer capacitance is one of the most-studied descriptors of the double layer. This work examines a case study on lanthanum strontium vanadate (LSV)/yttria-stabil…
Here we put forward for the first time that the negative effect of humidity on CO photooxidation at room temperature can be overcome by adjusting the composition of Pd-Pt bimetallic particles supported on TiO(2). Consequently, optimized Pd(x)Pt(1-x)/TiO(2) materials can be considered as common and efficient photocatal…
Medium sized molecules endowed with multiple Gd(3+) complexes are efficient high magnetic field MRI contrast agents. The novel ligand Mes(DO3A)(3), presenting three DO3A (1,4,7,10-tetraazacyclododecane-N,N',N''-triacetatic acid) units grafted on the methyl positions of a central mesitylene (1,3,5-trimethylbenzene), ha…
Uniform nanoerythrocyte-like, dodecahedron and spindle-like LuVO4 had been successfully synthesized on a large scale by a simple complex agent assisted hydrothermal method. The nanoerythrocyte-like LuVO4 was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy,…
Tungsten oxide was impregnated into the alumina-supported platinum catalyst in order to improve the soot oxidation activity and the resistance to sulfur dioxide. The catalysts were characterized by X-ray diffraction (XRD), Raman, UV-vis spectroscopy, Brunauer–Emmett–Teller (BET), Fourier transform infrared (FT-IR) spe…
The flow of foams and emulsions is characterized by a nonlinear relation between stress and strain rate. In simulations of linearly sheared, two-dimensional foam flows we observe two distinct regimes with qualitatively different bubble dynamics: at low shear rates there is strongly non-affine bubble motion while at hi…
With a variety of surface probe techniques, we investigated low-temperature decomposition of methanol on Au nanoclusters formed by vapor deposition onto an ordered Al(2)O(3)/NiAl(100) thin film. Upon adsorption of methanol on the Au clusters (with mean diameter 1.5-3.8 nm and height 0.45-0.85 nm) at 110 K, some of the…
CHEMICAL CONSTITUENTS OF Solanum asperum Rich (Solanaceae). Two glycoalkaloids: solamargine and solasonine; three flavonoids: tiliroside, 7-O--L-ramnopyranosyl-kaempferol and 3-O-[-D-glucopyranosyl-(16)--L-ramnopyranosyl]-7-O--L-ramnopyranosyl-kaempferol, in addition to the tripeptide Leu-Ile-Val, the aminoacid prolin…
Zn : Al layered double hydroxide-supported 3-aminopropyltriethoxysilane (APTES) and N-methyl 3-aminopropyltriethoxy silane (MAPTES) are found to be efficient, environmentally attractive and selective solid base catalysts for liquid phase aldol condensation reactions at room temperature. The organic functionalized soli…
We studied the dynamics of the wetting and diffusing processes of water droplets on hydrogel (Poly(2-acrylamido-2-methyl-propane-sulfonic acid -co- acrylamide) (PAMPS–PAAM)) substrates. The profiles of the droplet and substrate were measured simultaneously using a grid projection method. We observed that as the water…
The fluorescence, phosphorescence and thermoluminescence properties of Eu 3+ and Gd 3+ single-doped and co-doped Ca 2 SnO 4 phosphors sintered in air and in oxygen-deficient atmosphere (vacuum) were investigated. The red phosphorescence of phosphor Ca 2 SnO 4 : Gd 3+ , Eu 3+ sintered in vacuum atmosphere can last for…
Thermoplastic elastomer gels (TPEGs) are physically associating gels composed of ABA triblock copolymers that are highly swollen with a B selective solvent. A unique feature of TPEGs, when compared to typical chemically crosslinked gels, is that the properties are dictated by a combination of nano-scale block copolyme…
High level ab initio calculations on the photoinduced high-spin molecule [Mo(CN)(2)(CN-Cu(tris(2-aminoethyl)amine)(6)](8+) are reported. The calculations indicate that the mechanism of the photoinduced transformation from a paramagnetic to a ferromagnetic state involves a local Mo d-d transition followed by the deform…
The controlled, ring-opening polymerisation of DL-lactide in supercritical carbon dioxide (scCO2) using benzyl alcohol as an initiator and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as an organo-catalyst, is reported. Despite reports of DBU being efficiently converted to a carbonate salt in the presence of a proton sour…