Materials Literature
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Triboluminescent materials have been known for at least four centuries. The majority of work to date has been academic in nature – reporting a new triboluminescent material and/or presenting a spectroscopic study in an effort to explain the mechanism underlying the fracture-induced light emission. Recently, the advant…
Although many benefits are expected by reducing the operating temperature of solid oxide fuel cells (SOFCs) with alloy interconnectors, it should be of concern that chromium oxyhydroxide vapor generated from an oxide scale which is formed on the surface of most high temperature oxidation-resistant alloys, degrades the…
Optically clear thin mesoporous films with covalently attached fluorescein entities are shown to exhibit very fast response pH sensing.
The monomeric alkoxide (BDI)Mg(OtBu)(THF) and triphenylsiloxide (BDI)Zn(OSiPh3)(THF) have been prepared and characterized and shown to reversibly dissociate THF in solution on the NMR time scale; both compounds are active precursors for the ring-opening polymerization of lactide and the rate of polymerization is notab…
Raman scattering for a range of metal phthalocyanines using excitation frequencies from 457.9 to 1064 nm have been interpreted in the light of the recent DFT calculation on zinc phthalocyanine. The intention was to determine the features of the spectra that might be used for in situ analysis of specific phthalocyanine…
Biodegradable polymeric scaffolds for tissue engineering were fabricated by a gas-foaming/salt-leaching method using a combination of two effervescent salts, ammonium bicarbonate and citric acid. Poly(D,L-lactic-co-glycolic acid) (PLGA) in a state of gel-like paste was first produced by precipitation of PLGA dissolved…
The conditions for the fabrication of ideally ordered anodic porous alumina with a high aspect ratio were examined using pretextured Al in oxalic acid solution. The obtained anodic porous alumina has a defect-free array of straight parallel channels perpendicular to the surface. The channel interval could be controlle…
Bi 2 O 3 –ZnO–Nb 2 O 5 pyrochlore thin films were prepared on platinum coated Si wafers using a metalorganic deposition process. The structures, morphologies, and dielectric properties of films with two compositions: (Bi1.5Zn0.5)(Zn0.5Nb1.5)O7 and Bi2(Zn1/3Nb2/3)2O7, were investigated. Thin films of (Bi1.5Zn0.5)(Zn0.5…
Secondary amine–borane adducts R2NH·BH3, which are stable to H2 elimination below 100 °C, undergo efficient catalytic dehydrocoupling at 25–45 °C in the presence of RhI or RhIII complexes to quantitatively form cyclic aminoboranes [NR2–BH2]2 (1: R = Me or 2: cyclo-C4H8); under similarly mild conditions, the analogous…
High temperature X-ray diffraction (HT-XRD), thermal analysis (TGA-DTA), mass spectrometry (MS), in situ Fourier transform infrared (FT-IR) spectroscopy, and in situ Raman spectroscopy have been used to characterize the thermal decomposition of Co–Al hydrotalcite, [Co6Al2(OH)16](CO3)·4H2O, in air and inert atmospheres…
Fuel conversion to hydrogen is an important part of most fuel cell systems. The paper describes the available technologies for conversion of hydrocarbons and alcohols. The endothermic steam reforming catalysts and processes as well as autothermal reforming are proven technologies. Recent developments include catalytic…
The electrochromic properties of mesoporous tungsten oxide are described and compared to standard sol–gel films of WO3. The block copolymer template used in the synthesis was removed by solvent extraction and calcination methods, leading to mesoporous tungsten oxides which range from amorphous to crystalline depending…
The maximum one-dimensional mobility of charge within the insulated cores of columnarly stacked discotic molecules increases with increasing size (the number of C, N, and O atoms constituting the central aromatic macrocycle, see Figure) of the central core. This relationship can serve as a design criterion for discoti…
Various models so far proposed for the mechanism of hydrogen embrittlement (HE) of steels are critically reviewed with respect to the manifestation of hydrogen in the fracture process. Recent studies that elucidate the hydrogen states and their relevance to HE are discussed. Particular attention is paid to the role of…
A method for determining the three-dimensional structure of inorganic specimens using images formed from Rutherford scattered electrons, at a spatial resolution of 1 nm in all directions, is described and illustrated with results from a study of Pd–Ru bimetallic nanocatalysts supported on mesoporous silica: a 3D anima…
Vegetable oils and fats are important constituents of human and animal foodstuffs. Certain grades are industrially used and together with carbohydrates (cellulose, starch, saccharose from wood, grain, sugar cane and sugar beet) and proteins from a vegetable or animal source they are numbered among the renewable resour…
We report the development of novel luminescent nanoparticles composed of inorganic luminescent dye, Tris(2,2'-bipyridyl) dichlororuthenium (II) hexahydrate, doped inside a silica network. These dye doped silica (DDS) nanoparticles have been synthesized using a water-in-oil microemulsion technique in which controlled h…
Dielectric relaxations in ferroelectric ceramics occur at various frequencies, depending on the type of chemical or physical defects. These defects depend on either intrinsic or extrinsic heterogeneities due to special heat treatments (quenching, annealing,…), ionic substitutions, grain size additives, and grain bound…
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 214:161-165 (2001) - doi:10.3354/meps214161 An improved protocol for separating meiofauna from sediments using colloidal sil…
In the last decade, much progress has been made in these materials. This book presents a highly coherent coverage of supramolecular, photosensitive and electroactive materials, namely those that have been extensively investigated for applications in fields of electronic and photonic technologies. This extensive refere…