Materials Literature
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An investigation of hydrogen generation by the hydrolysis reaction of Al−Bi alloys in different media (pure water, 1 M NaCl solution, methanol, and ethanol) was performed at room temperature. The results show that the media have a great effect on the hydrolysis of Al−Bi alloys. In 1 M NaCl solution and in pure water,…
This paper describes the fabrication of hybrid nanoassemblies with polymer brushes and gold nanoparticles enabling detection of nanoscale optical changes based on localized surface plasmon resonance. The reversible and thermosensitive nanoscale actuation is achieved by combining stimuli-responsive polymer brushes and…
Recently developed electron-poor Pt(II) catalyst 1 with the "green" oxidant 35% hydrogen peroxide displays high activity and complete substrate selectivity in the epoxidation of terminal alkenes because of stringent steric and electronic requirements. In the presence of isolated dienes bearing terminal and internal do…
Micrometer-scaled hierarchical tubular structures of CuS assembled by nanoflake-built microspheres were first synthesized in high yield via a one-pot intermediate crystal templating process without surfactant or added templates, in which the intermediate complex Cu 3 (TAA) 3 Cl 3 formed in situ and subsequently served…
From the reaction of Ni(COD)(2) (COD = cyclooctadiene) in dry diethylether with 2 equiv of 2-phenyl-1,4-bis(isopropyl)-1,4-diazabutadiene (L(Ox))(0) under an Ar atmosphere, dark red, diamagnetic microcrystals of [Ni(II)(L*)(2)] (1) were obtained where (L*)(1-) represents the pi radical anion of neutral (L(Ox))(0) and…
The ultrafast electron transfer occurring upon Soret excitation of three new porphyrin-ferrocene (XP-Fc) dyads has been studied by femtosecond up-conversion and pump-probe techniques. In the XP-Fc dyads (XP-Fcs) designed in this study, the ferrocene moiety is covalently bonded to the meso positions of 3,5-di-tert-buty…
Differential scanning calorimetry has been used to study glassy indomethacin aged at 0 and -10 degrees C for periods of time up to 109 and 210 days, respectively. The results demonstrate the emergence of a small melting peak of the alpha-polymorph after aging for 69 days at 0 degrees C and for 147 days at -10 degrees…
Bundle up: The introduction of streptavidin (as a linker) between two FeII(terpyridine–bis-biotin) connectors affords a one-dimensional metal–organic protein framework (MOPF). In the presence of calcium ions and CO2 vapors, these MOPF aggregates form protein bundles that template the biomineralization of calcite.
We propose a concept of supramolecular materials for effective all-optical generation of surface relief structures and optical anisotropy. The materials are based on the ionic interactions between photochromic azobenzene units and polyelectrolytes. The materials are easy to produce and they allow the inscription of th…
The analysis of single molecules instead of a molecular ensemble provides a more detailed insight into molecular states and environment. Surface- and also tip-enhanced (resonance) Raman spectroscopy are becoming an interesting alternative to, in this respect, commonly employed fluorescence spectroscopy because of the…
The unique optical properties of semiconducting single-walled carbon nanotubes (SWNTs) are exquisitely sensitive to variations in the surrounding environments. Here, we have studied the redox chemistry of SWNTs encased with double-stranded deoxyribonucleic acid (DNA) reacted with either hydrogen peroxide H 2 O 2 or gl…
By the method of additional pulsed magnetic field influence in different magnetic materials (half metals, manganites, lithium ferrite, cobalt) it is established the analogy of time diagrams of magnetic pulse influence on single- and two pulse echoes in magnets when the distortion mechanism of single-pulse echo formati…
In this work, we synthesized ZnO nanorods by a wet chemical process. By varying different parameters of the synthesis process like precursor concentration, solvent used, surfactant, temperature, and reaction time, we were able to control the aspect ratio ( l / d ) and sharpness factor ( S f = h / b ) of the rods. Rods…
We study multiple exciton generation (MEG) in electronically coupled films of PbSe quantum dots (QDs) employing ultrafast time-resolved transient absorption spectroscopy. We demonstrate that the MEG efficiency in PbSe does not decrease when the QDs are treated with hydrazine, which has been shown to greatly enhance ca…
We present a general approach for the targeting and imaging of cancer cells using dendrimer-entrapped gold nanoparticles (Au DENPs). Au DENPs were found to be able to covalently link with targeting and imaging ligands for subsequent cancer-cell targeting and imaging. The Au DENPs linked with defined numbers of folic a…
Current computed tomography (CT) contrast agents such as iodine-based compounds have several limitations, including short imaging times due to rapid renal clearance, renal toxicity, and vascular permeation. Here, we describe a new CT contrast agent based on gold nanoparticles (GNPs) that overcomes these limitations. B…
There have been two previous structure determinations of the title compound, Na2WO4·2H2O: in 1969 [Mitra & Verma (1969). Indian J. Chem. 7, 598–602] and in 1974 [Okada et al. (1974a). Bull. Tokyo Inst. Technol. 120, 7–11]. However, both structures are incorrect according to their entries in the Inorganic Crystal Struc…
Collagen fibrils exhibit noticeable differences in their molecular order in the direction perpendicular to fibril axis. For instance, three‐dimensional crystallinity prevails for type I collagen (e.g. tendons) whereas only liquid‐like order in the lateral direction prevails for type II collagen (e.g. cartilage). The l…
Two novel photoreversible poly(ferrocenylsilanes) (PFS) with coumarin side groups, i.e., half- and whole-substituted poly(ferrocenyl(3-(7-hydroxycoumarin) propyl)methylsilane), are synthesized by transition metal-catalyzed ring-opening polymerization of ferrocenyl(3-chloropropyl) methylsilane monomer and subsequent gr…
Summary The structure of the emulsion droplet aggregates in whey‐protein‐stabilised oil‐in‐water (o/w) model emulsion gels was investigated using the novel spin‐echo small‐angle neutron scattering (SESANS) technique. This technique allows the assessment of the droplet cluster structure in an emulsion gel in terms of a…