Materials Literature
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An infiltration method for preparing a boron carbide‐aluminum (B 4 C‐AI) composite was modified so as to reduce the processing temperature and time. Titanium metal and titanium‐based compounds were added to B 4 C powders to enhance the wettability of the liquid aluminum on boron carbide skeletons. As expected, the tim…
We have prepared functional TiO2@CdS core/sheath heterostructure nanowires using a simple chemical reduction method at room temperature. The core/sheath nanowires were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible spectroscopic techn…
The interaction of six aryl-linked bis-beta-diketones, including a new naphthylene linked species, with copper(II), iron(III) and, in one instance gallium(III), has been investigated with the aim of obtaining metallo-supramolecular assemblies exhibiting different geometries. New examples of two assembly types incorpor…
This review outlines the recent developments in uncovering the enzymes and intermediates involved in fluorometabolite biosyntheses in the bacterium Streptomyces cattleya. A particular emphasis is placed on the purification and characterisation of the fluorinase, the C-F bond forming enzyme which initiates the biosynth…
The cationic cyclen based Eu(III)-phen conjugated 1.Eu was synthesised as a chemosensor for Cu(II), where the recognition in water at pH 7.4 gave rise to quenching of the Eu(III) luminescence and the formation of tetranuclear polymetallic Cu(II)-Eu(III) macrocyclic complexes in solution where Cu(II) was bound by three…
Ultralow carbon interstitial free (IF) steel was severely deformed up to a strain of 5.6 by the Accumulative Roll-bonding (ARB) process at 773 K. Crystallographic analysis by electron back-scattering diffraction (EBSD) technique in a field-emission type scanning electron microscope (FE-SEM) was carried out for the ARB…
Soft X-ray (200 to 1000 eV) absorption spectroscopy at the O K-edge and the metal -edges, in both the fluorescence yield (FY) and the partial electron yield (PEY) mode, has been used to probe the electronic structure of electrochemically deintercalated FY and PEY spectra of the transition metal -edges, indicated that…
Lithium zirconate, Li 2 ZrO 3 , has been reported as a candidate material for high‐temperature CO 2 separation. The reaction of Li 2 ZrO 3 with CO 2 is extremely fast, and the material can store significant quantities of CO 2 at high temperature. The reacted CO 2 can be regenerated by thermal cycling. Alternatively, a…
Palladium catalysed intramolecular cyclisations on meso-phenyl porphyrins give access to a range of substituted porphyrins in which one or two of the phenyl ortho-carbons are bonded directly to an adjacent β-pyrrolic position.
Assembly of Fe(II), 3-cyanopyridine and [Au(CN)2](-) affords, in one-pot reaction, three coordination polymers that represent a genuine example of supramolecular isomerism with strong influence in the spin crossover regime of the Fe(II) ions.
This review describes recently introduced methods of coating colloidal particles and fabrication of hollow multilayer polyelectrolyte capsules. Diffusion through multilayer, Donnan equilibria for ions inside and outside hollow spheres and mechanical properties are given in quantitative aspects.
Abstract Carbon nanofibers of ca. 1 μm by 20 nm dimensions have been successfully prepared by an improved route, consisting of the graphitization of polyacrylonitrile (PAN) previously formed inside the nanosized pores of sepiolite. This natural microfibrous silicate contains structural tunnels extending along the whol…
High-quality CdS, ZnS and alloyed ZnxCd1 − xS nanocrystals are synthesized in the commonly available coordinating solvent, high boiling-point long-chain amines, using the corresponding metal salts (such as metal stearate, acetate, chloride, sulfate etc.) and elemental sulfur as the precursors. The obtained CdS and all…
The ligands tris[3-(2-pyridyl)pyrazol-1-yl]hydroborate (L1, potentially hexadentate) and bis[3-(2-pyridyl)pyrazol-1-yl]dihydroborate (L2, potentially tetradentate) have been used to prepare ternary lanthanide complexes in which the remaining ligands are dibenzoylmethane anions (dbm). [Eu(L1)(dbm)2] is eight-coordinate…
Dendrimers and hyperbranched polymers are emerging as potentially ideal drug delivery vehicles because they provide a significant amount of tailorability and a large density of functional groups. This study explores the dynamics of cellular entry of dendrimers and hyperbranched polymers alone, and in the complexed for…
The apatite-type phases, La(9.33+x)(Si/Ge)(6)O(26+3x/2), have recently been attracting considerable interest as potential electrolytes for solid oxide fuel cells. In this paper we report results from a range of doping studies in the Si based systems, aimed at determining the key features required for the optimisation…
Abstract A new method for the preparation of ultrathin tethered polymer layers with gradually changing thickness was developed utilizing the “grafting to” approach. The grafting procedure allowed translation of the temperature gradient created in a heating stage into a gradient of polymer chain grafting density. The g…
Synthesis of graphite by extraction of iron from iron carbide by chlorine is reported in this work. This process is attractive because it can produce well-ordered graphite at temperatures as low as 600 °C, providing an opportunity for low-temperature solid-state synthesis. Thermodynamic simulation was used to determin…
Thick composites composed of crystalline manganese dioxide ( MnO 2 ) and multiwall carbon nanotubes (MWCNTs) were successfully codeposited onto a graphite substrate from an Mn ( AcO ) 2 ⋅ 4 H 2 O + MWCNTs solution. The rate/nucleation mechanism of MnO 2 deposition was significantly influenced by the introduction of MW…
Small-sized liposomes have several advantages as drug delivery systems, and the ethanol injection method is a suitable technique to obtain the spontaneous formation of liposomes having a small average radius. In this paper, we show that liposomal drug formulations can be prepared in situ, by simply injecting a drug-co…