Materials Literature
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A chemically stable photodimer of 7-allyloxycoumarin ( 1 ) has been identified. An efficient synthesis of the syn -ht photodimer ( 2 ) was developed, and the compound was subsequently elaborated to the bis(triethoxysilyl) derivative ( 7 ). Sol–gel polymerization produced a robust hybrid glass ( 7X ) that could be fabr…
Water-soluble gold nanoparticles (AuNPs) capped with both fluorescent (FL) 3-aminophthalate (APA) and electrochemiluminescent (ECL) luminol molecules were described in our previous work. The synthetic and characteristic efforts of these functionalized AuNPs (lumAuNPs) were subsequently followed by investigations of th…
Silicate garnets, general formula E 3 G 2 Si 3 O 12 , form an important class of rock-forming minerals and, in nature, most are solid solutions. Their crystal-chemical and solid-solution properties are sometimes interpreted in terms of the widely used Pyralspite-Ugrandite classification scheme, and this can lead to er…
Synthetic aspects of silver nanoparticle preparation in one-and two-phase aqueous and water-organic media and the influence of experimental factors on particle size and surface hydrophilicity/hydrophobicity are studied. It is shown that silver nanoparticles with controlled mean size and surface hydrophilic-hydrophobic…
Diamond surface susceptibility toward the degree and type of termination and reconstruction has been investigated theoretically by using density functional theory methods. The adsorption geometries and energies for H, O, and OH species adsorbed to diamond (111)-1 × 1 and (111)-2 × 1 surfaces under varying surface cove…
The storage of hydrogen in a compressed gaseous form offers the simplest solution in terms of infrastructure requirements and has become the most popular and most highly developed hydrogen storage method. Hydrogen storage vessels are the key equipment of hydrogen refueling stations. Seamless pressure vessels made from…
The influence of chromium on the crystallographic phase and the microstructure of ceramics with the nominal composition BaTiO 3 +0.04BaO+ x Cr 2 O 3 (0≤ x ≤0.025) was investigated by systematic studies of x-ray diffraction (XRD) and electron paramagnetic resonance (EPR). At Cr concentrations ≤0.1 mol% a hexagonal phas…
The behavior of palygorskite as an adsorbent or catalyst support is governed mainly by the magnitude of its surface areas and degree of surface activity. Most heterogeneous catalytic reactions take place at elevated temperatures. It is important and necessary to known the possible changes in the physicochemical proper…
A tricritical point is observed in the Nd1−xSrxMnO3 (NSMO) (x=0.3, 0.33, and 0.4) manganites at x=0.33 which separates the first-order transition in NSMO-0.3 and second order transition in NSMO-0.4. The ferromagnetic transition of these compounds is further investigated by measuring magnetocaloric effect (MCE) and by…
In recent years, increasing attention has been paid for the construction of optically active nanomaterials. In particular, monolayer- protected gold nanoclusters are attractive for such systems. To date, optically active gold nanoclusters have been prepared by using chiral adsorbates or surface modifiers. In general,…
Bulk zinc ferrite has been studied in the past. In the bulk form zinc ferrite crystallizes in the normal spinel structure with all the zinc ions occupying the tetrahedral and all the iron occupying the octahedral sites, respectively. But, nanosize zinc ferrite is believed to crystallize in a different way. It is now w…
Viscosity measurements are reported for a bent‐core nematic liquid crystal, 4‐ chloro‐1,3‐phenylenebis{4‐[4′‐(9‐decenyloxy)benzoyloxy]} benzoate (ClPbis10BB). The rotational viscosity was measured by analysing the dynamics of director rotation in pulsed magnetic fields, and the flow viscosities were determined by empl…
We prepared polymeric microparticles with coordinated patches using oil-in-water emulsion droplets which were stabilized by adsorbed colloidal polystyrene (PS) latex particles. The oil phase was photocurable ethoxylated trimethylolpropane triacrylate (ETPTA), and the particle-armored oil droplets were solidified by UV…
The phase relations in CeO2−Ho2O3 and CeO2−Er2O3 systems have been established under the slow-cooled conditions. As per x-ray diffraction (XRD), in both the series a single-phasic solid solution forms up to the nominal composition Ce0.6RE0.4O1.8 (RE=Ho, Er) retaining the F-type structure of parent ceria. In Ce1−xErxO2…
Abstract Reduced sensitivity RDX (RS‐RDX) particles are now available from several manufacturers. But a clear understanding of this reduced sensitivity behavior is not yet available. RS‐RDX particles are usually employed in cast formulations to reduce their shock sensitivity. The use of RS‐RDX in pressed formulations…
Room temperature visible and near-infrared photoluminescence from black silicon has been observed. The black silicon is manufactured by shining femtosecond laser pulses on silicon wafers in air, which were later annealed in vacuum. The photoluminescence is quenched above 120 K due to thermalization and competing nonra…
Abstract Antarctic benthic marine diatoms from the Potter Cove region, King George Island were studied in samples collected during the austral summer 2003. A floristic list was made to add information on the Antarctic benthic diatom distribution. A total of 84 species was identified from four localities in Potter Cove…
Nanobiotechnology is playing an important role in advances in oncology and currently nanooncology is the most important chapter of nanomedicine. Nanobiotechnologies have refined molecular diagnostics and enabled early detection of tumors and discovery of biomarkers of cancer. Various nanoparticles are the basis of dia…
Abstract Hybrid aerosol‐assisted (AA) and atmospheric pressure (AP) CVD methodology is utilized, for the first time, to produce thin films of gold nanoparticle‐doped vanadium dioxide. Good surface coverage, comparable to that of APCVD processes, is observed, and a variety of different film thicknesses and dopant level…
ZrO 2:Er 3+ nanoparticles are synthesized and further modified via a ligand-capped/ligand-exchanging method with TEOS, APTES, and SA. Antiaggregation investigations using TEM and FT-IR indicate that severe aggregation can be reduced by adhering ammonic or carboxylic functional groups to the nanoparticle surfaces. The…