Materials Literature
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Crystal structures of TiO(OH)(2) and Li(2)TiO(3) have been studied in detail and refined using X-ray powder diffraction data. Both compounds possess a high concentration of defects in the structure. The crystal structure of the Li(2)TiO(3) salt obtained at 700 degrees C reveals stacking faults of LiTi(2) metal layers,…
We address a systematic study of the three-phase contact angle, θ, of microparticles at flat fluid-liquid interfaces by using different experimental methods. We measured the dependence of θ not only on the particle chemical composition and size, but also on the solvent used to spread the microparticles onto the fluid…
Sparassis crispa (SC), known as Hanabiratake in Japanese, is an edible mushroom with various medicinal properties. We isolated 3 novel phthalides, designated hanabiratakelide A (1), B (2), and C (3), from the SC fruit body. In this investigation, 3 known phthalides (4-6), ubiquinone-9, and 2 known unsaturated fatty ac…
Two building blocks, 2-(1H-tetrazol-5-yl)quinoline-8-ol (8-hydroxyquinoline-2-tetrazole) (H(2)hqt) and 8-hydroxyquinoline-2-carboxylic acid (H(2)hqa) provide convenient dianionic tridentate O,N,N- and O,N,O-chelating units containing the 8-hydroxyquinoline chromophore. These ligands form tris-chelate tris-anionic comp…
We study in this paper the well-posedness and the asymptotic behavior, in terms of global attractors, of the Caginalp system with coupled dynamic boundary conditions and possibly singular potentials (e.g., of logarithmic type).
Chloroform-soluble palmitic and decanoic acid esters of cellulose were synthesized from the reaction of MCC with acid chlorides in LiCl/DMA and the ionic liquid [amim]Cl, as novel cellulose solvents. A process of derivatization of the remaining hydroxyl groups, as phosphite esters and subsequent 31P NMR analysis, allo…
Construction of formally antiaromatic discotic twins based on dehydroannulene cores linked through non-adjacent positions on triphenylenes gives stable molecules with intriguing molecular and supramolecular properties and, unlike the majority of discotic triphenylenes and similar materials, the twins form nematic meso…
One of the remarkable achievements in the field of nanotechnology is Carbon Nanotubes (CNT) synthesis. Since their discovery in 1991 by Iijima, CNTs have attracted much attention across the world. The CNTs are broadly classified into single‐walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs). The…
Stress-corrosion cracking of steel is a ubiquitous phenomenon in which steel is chemically corroded, followed by fracture induced by applied loads. The products of steel corrosion in moist air at high temperature (>570 °C) are α-Fe2O3, FeO, and Fe3O4. Here we employ an ab initio density functional theory + U method to…
The emission intensity of a monocationic Tb or Eu(III) complex of a bis(1-azaxanthone) ligand is enhanced in the presence of serum albumin; the lanthanide complex stains dividing cells, allowing visualisation of mitotic chromosomes.
This paper reports on a study in which fine seawater droplets were placed on zinc surfaces for periods of 15 min to 6 h. After each exposure, droplets were either extracted from the specimens or allowed to evaporate in laboratory conditions. Scanning electron microscopy (SEM)–energy-dispersive spectroscopy, X-ray micr…
The oxidation behavior of (MCO)-coated Haynes 230 (H230) and Crofer 22 APU was investigated between 700 and . The oxidation kinetics of the coated alloys was compared with that of base alloys at . An apparent two-stage kinetics behavior of the MCO-coated Crofer 22 APU was observed. The coating effectively reduced the…
Multifunctional composites based on calcium carbonate (CaCO3) spherical microparticles stabilized through the embedding of CdSe/ZnS/SiO2 nanoparticles into surface pores were fabricated. The stabilization of the vaterite polymorph of CaCO3 through nanoparticles embedding was necessary to generate a spherical, porous m…
We propose a hybrid lattice Boltzmann algorithm to simulate the hydrodynamics of colloidal particles inside a liquid crystalline host. To validate our algorithm, we study the static and the microrheology of a colloid in a nematic, with tangential anchoring of the director field at the particle surface, and we confirm…
A facile approach for the synthesis of monodisperse gold nanoparticles with radii in the range of 7 to 20 nm is presented. Starting from monodisperse seeds with radii of 7 nm, produced in the first step, the addition of a defined amount of additional precursor material permits distinct size regulation and the realizat…
The properties of taurocholate-lecithin powder (SIF Powder) and the biorelevant media FeSSIF and FaSSIF prepared from the powder were investigated using various techniques. The powder is stable and shows no change in the physical or chemical characteristics for at least 12 months in the original container stored at 2-…
There is currently significant interest in particle-stabilized emulsions for a variety of applications and as precursors to other materials such as microcapsules or colloidosomes. A prerequisite for many applications is the ability to produce stable droplets with a well-controlled size. The preparation of oil-in-water…
The exploding field of nanotechnology is largely driven by the significant physical and chemical property changes of nanoparticles (NPs) and other nanostructures in comparison to bulk materials and by an increasing capacity for measuring these property changes and synthetically tuning these property changes by control…
The one electron electrochemical reduction of vanadium(V) substituted-Keggin type polyoxometalate anions [XV(V)M(11)O(40)](4-) (XV(V)M(11)) where X = P, As; M = Mo or W has been investigated in CH(3)CN as a function of acid concentration. EPR studies confirm that the product is the highly basic and hence readily proto…
Anisotropic nano-, micro- and mesoscale natural and synthetic structures possess a unique combination of physical properties due to a complex balance of steric factors and intermolecular interactions at multiple length scales. Utilizing such structures as templates for conformal replication allows reproduction of thei…