Slow relaxation of magnetisation in an octanuclear cobalt(ii) phosphonate cage complex
The synthesis, structural and magnetic characterisation of a new polymetallic cobalt complex are reported; the magnetic behaviour is unusual.
Materials Literature
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Organorhenium(vii) and organomolybdenum(vi) oxides: syntheses and application in olefin epoxidation
The first members of the classes of the organorhenium(VII) oxides and organomolybdenum(VI) oxides were described during the 1960s and 1970s. However, despite the fact that methyltrioxorhenium(VII)(MTO) is probably the best examined organometallic oxide known, many of its derivatives as well as the Mo congeners were no…
Growth of porous single-crystal Cr2O3 in a 3-D mesopore system
Single-crystal Cr2O3 with regular mesopores has been synthesized using mesoporous silica KIT-6 as a template and characterized by using XRD, HRTEM and nitrogen adsorption/desorption.
High-Power SOFC Using La[sub 0.9]Sr[sub 0.1]Ga[sub 0.8]Mg[sub 0.2]O[sub 3−δ]∕Ce[sub 0.8]Sm[sub 0.2]O[sub 2−δ] Composite Film
A high-performance solid oxide fuel cell (SOFC) single cell with (LSGM) thin film ( thick) as electrolyte, working at 400-700°C, was demonstrated. A (SDC) interlayer (400 nm thick) was introduced between the anode substrate of and the LSGM thin film to prohibit the reaction between LSGM and NiO and also to promote the…
Enantioselective segregation in achiral nematic liquid crystals
The elusive biaxial nematic liquid crystal phase was recently discovered in a family of substituted oxadiazoles. Our investigations of these materials show that the achiral biaxial nematic phase can segregate into chiral domains of opposite handedness, thereby demonstrating that the liquid-like nematic phase exhibits…
A tunable solid-state fluorescence system consisting of organic salts of anthracene-2,6-disulfonic acid with primary amines
A dramatic change of solid-state fluorescence properties triggered by molecular arrangements of anthracene moieties was obtained by using organic salts of ADS with primary amines, indicating that modification of the amines enables us to tune the properties.
One-step process to fabricate Ag–polypyrrole coaxial nanocables
Ag-polypyrrole nanocables were fabricated in aqueous solution at room temperature through a redox reaction between silver nitrite and pyrrole, using poly(vinyl pyrrolidone)(PVP) as assistant agent.
Saccharin as a salt former. Enhanced solubilities of saccharinates of active pharmaceutical ingredients
Saccharin, acting as a weak acid, forms salts with basic APIs and these salts have the desirable property of enhanced water solubility.
Microstructure and Mechanical Properties of Cu-Ni-Si Alloys
The microstructure and mechanical properties of thermo-mechanically treated Cu-2.0mass%Ni-0.5mass%Si alloys with and without 0.1mass%Mg have been investigated. The Mg addition increases the formation rate of disk-shaped Ni2Si particles. The Mg addition produces higher strength and resistance to stress relaxation. The…
Large pore cage type mesoporous carbon, carbon nanocage: a superior adsorbent for biomaterials
Novel large pore cage type mesoporous carbon molecular sieves, carbon nanocage, (CKT) with various pore diameters have been prepared from KIT-5 as inorganic templates synthesized at different temperature. It has been found that the textural parameters of the above mesoporous carbons can be easily tuned by a simple adj…
Chemical synthesis of PEDOT nanofibers
A one-step, room-temperature method is described to chemically synthesize bulk quantities of microns long, 100-180 nm diameter nanofibers of electrically conducting poly(3,4-ethylenedioxythiophene)(PEDOT) in the form of powders, or as optically transparent, substrate-supported films using a V2O5 seeding approach.
Highly sensitive signal detection of duplex dye-labelled DNA oligonucleotides in a PDMS microfluidic chip: confocal surface-enhanced Raman spectroscopic study
Rapid and highly sensitive detection of duplex dye-labelled DNA sequences in a PDMS microfluidic channel was investigated using confocal surface enhanced Raman spectroscopy (SERS). This method does not need either an immobilization procedure or a PCR amplification procedure, which are essential for a DNA microarray ch…
Fabrication and Performance of GDC-Impregnated (La,Sr)MnO[sub 3] Cathodes for Intermediate Temperature Solid Oxide Fuel Cells
High-performance (LSM) cathodes for intermediate temperature solid oxide fuel cells were fabricated by the ion impregnation of oxygen ion conducting Gd-doped (GDC) oxide. The microstructure of the GDC-impregnated LSM electrode was characterized by the uniform dispersion of very fine GDC particles in the LSM porous fra…
Fluorescence resonance energy transfer between a quantum dot donor and a dye acceptor attached to DNA
We show that direct coupling of a dye-labelled DNA (acceptor) to a quantum dot (QD) donor significantly reduces the donor-acceptor distance and improves the FRET efficiency: a highly efficient FRET (approximately 88%) at a low acceptor-to-donor ratio of 2 has been achieved at the single-molecule level.
Characterization and Properties of P(VdF-HFP)-Based Fibrous Polymer Electrolyte Membrane Prepared by Electrospinning
Microporous fibrous membranes were prepared from poly(vinylidenefluoride- co -hexafluoropropylene) P(VdF-HFP) solutions in an acetone/ N,N -dimethylacetamide mixture using the electrospinning method. Varying the P(VdF-HFP) polymer concentration in electrospinning can easily control the pore size and the porosity of th…
Phosphate Sorption in Aluminum‐ and Iron‐Rich Humus Soils
Groundwater discharge areas in boreal forest ecosystems can potentially be areas where Fe and Al accumulate in the forest floor and affect the solubility of P. This study was conducted to determine phosphate sorption properties using humus soils containing high native amounts of Al and Fe. Humus soils were collected f…
Cu Wettability and Diffusion Barrier Property of Ru Thin Film for Cu Metallization
The main issue of Cu metallization is the electromigration of Cu through the interface between Cu and the barrier or capping layer. To improve electromigration resistance at the Cu and barrier metal interface, insertion of a glue layer which enhances the adhesion of Cu onto the under layer may be effective. The wettab…
Organic–inorganic polymer hybrids prepared by the sol-gel method
This review focuses on some aspects of organic-inorganic hybrid materials prepared by the sol-gel method. This field has been studied worldwide as one of the nanotechnologies, and is now of current interest for both organic and inorganic scientists. The elaboration of organic–inorganic polymer hybrid materials using t…
The mineral phase in the cuticles of two species of Crustacea consists of magnesium calcite, amorphous calcium carbonate, and amorphous calcium phosphate
The cuticules (shells) of the woodlice Porcellio scaber and Armadillidium vulgare were analysed with respect to their content of inorganic material. It was found that the cuticles consist of crystalline magnesium calcite, amorphous calcium carbonate (ACC), and amorphous calcium phosphate (ACP), besides small amounts o…
Role of Orbitals in the Physics of Correlated Electron Systems
Rich properties of systems with strongly correlated electrons, such as transition metal (TM) oxides, is largely connected with an interplay of different degrees of freedom in them: charge, spin, orbital ones as well as crystal lattice. Specific and often very important role is played by orbital degrees of freedom. The…