Materials Literature
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Random and ordered macropore formation in p-type silicon have been studied experimentally. We found that the density of macropores in a random macropore nucleation regime is linearly depending on the samples doping concentration. Macropore etching rate depends linearly on the current density up to the critical current…
Structural and acid–base properties of Mg/Al and Mg/Ga layered double hydroxides (LDH's) obtained by microwave irradiation of the co-precipitated gels have been investigated and compared to those of samples conventionally aged by prolonged hydrothermal treatment of the gels. Similar crystallinities and chemical compos…
A database comprising all ligand-binding sites of known structure aligned with all related protein sequences and structures is described. Currently, the database contains approximately 50000 ligand-binding sites for small molecules found in the Protein Data Bank (PDB). The structure-structure alignments are obtained b…
The acoustic vibrational modes of Au nanorods with aspect ratios between 2 and 5 have been investigated by time-resolved laser spectroscopy. The results show that laser excitation launches a coherent vibrational motion that has a period that depends linearly on the length of the rod. Due to polydispersity in the sampl…
The contribution of solvent-exposed charged residues to protein stability was evaluated using ubiquitin as a model protein. We combined site-directed mutagenesis and specific chemical modifications to first replace all Arg residues with Lys, followed by carbomylation of Lys-amino groups. Under the conditions in which…
ABSTRACT: Soy protein films were thermally laminated with either single or double coats of corn‐zein. Microstructural characterization of the surfaces and cross‐sections reveals a ductile protein matrix of the soy component, but a brittle layered structure for the corn‐zein component. The hydrophobic nature of the cor…
Nematic liquid-crystalline (LC) physical gels suitable for light scattering electrooptical displays have been prepared from a nematic liquid crystal and a low molecular weight gelator containing an oligo(L-isoleucine) moiety. The number of amino acid moieties of the gelators has a great effect on the gelation ability…
Dendrimers are potentially useful for encapsulation of core moieties. Although the conformation that a dendrimer assumes around a core moiety cannot be directly determined, the effect of increasing dendrimer size on the photophysical and electrochemical properties of the core has been documented. Specifically, studies…
A very easy way for improving the purity of carbon nanotubes using a domestic multimode microwave oven is reported, in which selective burning of metal particles helps remove most of the iron content.
Formation of Anodic Films on Magnesium Alloys in an Alkaline Phosphate Electrolyte , Bonilla, F. A., Berkani, A., Liu, Y., Skeldon, P., Thompson, G. E., Habazaki, H., Shimizu, K., John, C., Stevens, K.
To avoid the formation of hollow particles during spray pyrolysis, a spray hydrolysis reaction method (SHRM) was studied. Unlike the conventional spray pyrolysis that uses metal salt as a precursor and dry air as a carrier gas, the SHRM introduces a mixture of metal salt and dimethyl oxalate (DMO) as precursors and a…
Two types of dendritically functionalized iron(II) porphyrins were prepared (Scheme) and investigated in the presence of 1,2-dimethylimidazole (1,2-DiMeIm) as the axial ligand as model systems for T(tense)-state hemoglobin (Hb) and myoglobin (Mb). Equilibrium O2- and CO-binding studies were performed in toluene and aq…
Oxide polypyrrole (PPy) composite films have been studied as protective coatings for iron. PPy films, containing strong oxidative species like oxide, have been obtained in order to maintain the polymer in its oxidized state which corresponds to the iron passive domain. Oxide particles in suspension in pyrrole/tetraoxa…
Taking advantage of the Curie contribution to the relaxation of the protons in the Tb(III) complex, and the quadrupolar relaxation of the 17O and 2H nuclei on the Eu(III) complex, the effect of the internal motion of the water molecule bound to [Ln(DOTAM)(H2O)]3+ complexes was quantified. The determination of the quad…
This Highlight provides a concise review of several useful concepts in the targeted synthesis of a series of crystalline, porphyrin-based supramolecular arrays, employing suitably activated building blocks. Different modes of the supramolecular assembly are demonstrated, exploiting the functionality and directionality…
The in vitro and in vivo degradation of poly-L-lactic acid cages used as an adjunct to spinal arthrodesis was investigated. In the in vitro experiments cages were subjected to aging up to 73 weeks in phosphate-buffered solution (pH 7.4) at 37 degrees C. Inherent viscosity, crystallinity, and mechanical strength were d…
In this study, a novel process for depositing tin oxide thin films by electrodeposition has been developed. Amorphous phase of the as-deposited film was obtained at the temperature of 85°C. Nanocrystalline SnO 2 having tetragonal structure with a grain size in the range of 4 to 7 nm was obtained by heat-treatment at 4…
[reaction: see text] A Cu(II) complex of the first aryl-substituted tripyrrinone derivative, 14-benzoyl-5,10-diphenyl-1-oxo-tripyrrinato copper(II) (3-Cu) was obtained in the reaction of N-confused tetraphenylporphyrin (NCTPP) and Cu(OAc)(2) in refluxing toluene, and subsequent treatment with acid afforded a free trip…
The swelling properties of physisorbed polyelectrolyte multilayer self-assemblies with alternating polyion charge in humid air and in aqueous environment were investigated via X-ray and neutron reflectometry as well as optically, using surface plasmon spectroscopy. The sorption behavior was similar to that found for n…
We developed a novel transparent conductive film, molybdenum-doped indium oxide (IMO). Using normal thermal reactive evaporation without any special treatments, IMO films have been prepared on normal glass microscope slides at about 350 °C with electrical resistivity of 1.7×10−4 Ω cm, mobility over 100 cm2 V−1 s−1, an…