Materials Literature
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We have synthesized a biologically inert, photosensitive derivative of the major excitatory amino acid, L-glutamate (which we call MDNI-glu) that makes more efficient use of incident light than all other caged glutamates. Laser flash photolysis of MDNI-glu in acutely isolated hippocampal brain slices evoked a rapid in…
The crystal structures of Mg-rich SFCA (SFCAM); Ca2(Ca0.10Mg1.20Fe5.55Si1.50Al3.65)O20 (triclinic P1, a=8.848(1) Å, b=9.812(1) Å, c=10.403(1) Å, α=64.35(1)°, β=84.19(1)°, γ=66.27(1)°, V=742.4(1) Å3, Z=2) and Ca2(Mg2.00Fe4.45Si2.15Al3.40)O20 (triclinic P1, a=8.928(2) Å, b=9.823(2) Å, c=10.389(1) Å, α=64.41(1)°, β=83.90…
A novel class of organic–inorganic nanohybrid material was prepared by the intercalation in kaolinite of a molten organic salt (1-ethyl pyridinium chloride, EP) above its melting temperature. The intercalation proceeded at 170 °C under N2. It did not succeed when kaolinite was used as the starting material, whereas th…
Surface-enhanced Raman scattering (SERS) has recently been a matter of keen interest from the points of both basic science and applications because by using the SERS effect one can obtain Raman signals even from a single molecule. Immunoassay is one of the most promising fields in the applications of SERS, and the pur…
1,5-Diisopropyl-6-oxo-verdazyl free radicals were synthesized via the condensation of BOC protected isopropyl hydrazine with phosgene, deprotection with aqueous HCl, condensation with aldehydes to form tetrazanes and finally oxidation to give the free radicals. The introduction of isopropyl groups results in free radi…
Based on a combined theoretical-experimental study, we propose that substituted m-phenylene ligands (m-N-Phi-N) can act as tuneable strong ferromagnetic couplers connecting Cu(II) ions; a new complex presenting that bridge with J close to +15 cm(-1) has been suggested and synthesized.
Europium ͑Eu 2+ ͒-doped alkaline earth orthosilicates ͑Sr 1-x Ba x ͒ 2 SiO 4 :Eu 2+ , are studied as a phosphor for color-tunable white-lightemitting diode.With an increase of Ba ions in ͑Sr 1-x Ba x ͒ 2 SiO 4 :Eu 2+ , the lattice constants increase, and the emission bands shift to higher energy in a systematic way.Th…
Volume 13B provides detailed information on the corrosion performance of metals and alloys, along with selection and application considerations for specific materials and corrosive environments. It explains how metals and nonmetals are affected by various elements and how to protect them with thermal spray coatings, e…
The first examples of polyoxometalate structures that incorporate embedded chelated heteroatoms point to new possibilities for stereochemical control of applications.
The initiation of pitting corrosion of type 304 stainless steel under a thin electrolyte layer containing chloride ions has been investigated.1 M MgCl 2 solution layers with four different thicknesses of 1000, 500, 125, and 25 m were placed on the stainless steel electrode surface and then dried at different rates at…
The luminescent and reflectivity spectra of a series of the molybdates with the scheelite crystal structure were investigated using synchrotron radiation. The main features in reflectivity spectra in the energy range of 3.2–40 eV were analyzed. The luminescence spectra were measured under X-ray excitation and their re…
Achiral porphyrin derivatives 1-M form twisted supramolecular assemblies and the pitch of the twisted tape structure can be altered by changing the central metal.
Mg-Al hydrotalcite platelets with a lateral size of 20 nm were deposited on carbon nanofibers and the resulting supported catalyst exhibited a specific activity in the condensation of acetone four times that of unsupported hydrotalcites due to the higher number of active edge sites.
Porous alginate/polyvinyl alcohol (PVA) hybrid scaffolds as bioartificial cell scaffolds were fabricated to improve cell compatibility as well as flexibility of the scaffolds. The alginate/PVA hybrid scaffolds with different PVA compositions up to 50 wt% were fabricated by a modified freeze-drying method including the…
3-D interconnected networks of magnetic cobalt nanobowls with a wall size of <100 nm dimension have been fabricated. A novel technique was used to overcome the problem of volume shrinkage usually observed in such structures when formed by chemical conversion route. Cobalt particles were formed in the interstitial spac…
Fluorine atoms are selectively attached to the sidewall of the outer shell of DWNTs without disrupting the double-layered morphology; the stoichiometry of the fluorinated DWNTs is CF(0.30).
We propose a new upscaling scheme for the passage from atomistic to continuum mechanical models for crystalline solids. It is based on a Taylor expansion of the deformation function and allows us to capture the microscopic properties and the discreteness effects of the underlying atomistic system up to an arbitrary or…
We have investigated the formation of tungsten oxide nanowires under different CVD conditions. We find that exposure of oxidized tungsten films to hydrogen and methane at 900C leads to the formation of a dense array of typically 10 nm diameter nanowires. Structural and chemical analysis shows that the wires are crysta…
In the course of CASP6, we generated models for all targets using a new version of the "FRankenstein's monster approach." Previously (in CASP5) we were able to build many very accurate full-atom models by selection and recombination of well-folded fragments obtained from crude fold recognition (FR) results, followed b…
The ligand N,N'-bis[(6-carboxy-2-pyridylmethyl]ethylenediamine-N,N'-diacetic acid (H(4)bpeda) was synthesised using an improved procedure which requires a reduced number of steps and leads to a higher yield with respect to the published procedure. It was obtained in three steps from diethylpyridine-2,6-dicarboxylate a…