Materials Literature
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The pH dependent ligation of a pendant arylsulfonamide group allows switching between the q = 0 and q = 2 states to be reported by changes in lanthanide luminescence emission over the pH range 5.5–7.5 and in the presence of serum albumin.
MgM(III)–carbonate hydrotalcites where M(III) = Al, Fe and Cr were rapidly synthesized through an instantaneous addition method coupled with microwave irradiation. The materials were characterized by powder X-ray diffraction (XRD), thermogravimetric analysis, 27Al MAS-NMR spectroscopy, transmission electron microscopy…
The engineering of a functional blood vessel substitute has for a quarter of a century been a "holy grail" within the cardiovascular research community. Such a substitute must exhibit long term patency, and the critical issues in this area in many ways are influenced by biomechanics. One of the requirements is that it…
Talc-filled polypropylene (PP) composites coupled with silane-grafted polypropylene (PP-g-Si) were prepared. Effect of PP-g-Si on the mechanical properties, crystallization, and melting behavior of PP composites was investigated. Compared with the uncoupled composites, the mechanical properties of Talc/PP composites c…
Entitled “Natural Fiber-Based Composites”, this Special Issue has the objective to give an inventory of the latest research in the area of composites reinforced with natural fibers. Fibers of renewable origin have many advantages. They are abundant and cheap, they have a reduced impact on the environment, and they are…
The use of predisposed segmental ligands in multi-component self-assembly processes allows the preparation of triple-helical heterodimetallic d–f complexes in which each pair of metal ions is isolated and protected from external interactions. The selection of the programmed heterodimetallic edifice within the ‘dynamic…
Reaction of a tetracyano[1,1,1,1]metacyclophane blocked in the 1,3-alternate conformation and silver cations under self-assembly conditions leads to a tubular coordination network formed by double bridging of consecutive rings by linearly coordinated metal centres.
Slow diffusion of K3[Fe(CN)6] and [NiL](ClO4)2 (L = 3,10-diethyl-1,3,5,8,10,12-hexaazacyclotetradecane) yields a novel cyano-bridged 2D brick wall-like assembly which is ferromagnetically ordered below 9.1 K with considerably strong hard magnetic behaviour.
The vibrational spectra of [R3S]I3(l) (R = Me or Et) showed extra spectral features in the 145 and 170 cm−1 region, in contrast to what is predicted by the selection rules for I3− of D∞h symmetry. Depolarisation experiments showed that the 170 cm−1 peak originates from a symmetric vibration mode. The addition of an ex…
A tetrahedrally distorted mononuclear copper(II) complex, [Cu(salabza)] 1, and two dinuclear CuLn complexes, [Cu(salabza)Ln(hfac)3] (Ln = Gd 2 or Lu 3), were synthesized and their molecular structures determined, where H2salabza and Hhfac denote N,N′-bis(salicylidene)-2-aminobenzylamine and 1,1,1,5,5,5-hexafluoroacety…
The kinetics of photoinduced electron transfer in new multicomponent arrays of a π-stacked fullerene porphyrin dyad and diazabicyclooctane or a fulleropyrrolidine ligand have been determined and depend on the molecular architecture
RATIONALE AND OBJECTIVES: To investigate the pharmacokinetics of 1M gadobutrol as a new neutral MR contrast agent in patients with impaired renal function. METHODS: Twenty-one patients with impaired renal function and any indication for a contrast-enhanced MRI were enrolled into this prospective study and classified i…
Strategies for fire retarding ethylene vinyl acetate copolymer (EVA) in electrical cable insulation by means of halogen-free systems were explored. Attempts to increase char yield, promoting crosslinking of double bonds either created by deacetylation of vinyl acetate units or by dehydrogenation of ethylene sequences…
A cationic spiroquinoxazine (SO2) is found to be photochromic both in solution and in the crystalline state.
Samples of pure aluminum were prepared with four different areas on one surface: etched aluminum, etched aluminum exposed to various electrolytes, Alodine treated aluminum, and Alodine treated aluminum exposed to electrolyte. X‐ray absorption near‐edge structure (XANES) was used to measure both the distribution of chr…
Amphiphilic cationic polyenic push–pull chromophores which offer interesting supramolecular possibilities for second harmonic generation have been synthesised and their optical non-linearities studied for the first time by electric field induced second harmonic (EFISH) generation in solution.
A procedure is described for the application of fuzzy logic systems to the classification of partial discharge pulse patterns in terms of cavity or void size. The features employed in the pattern recognition task are those related to the form or shape of the partial discharge pulses and their associated apparent charg…
We have determined the surface plasmon excitation correction (SEC) factor for nickel in the 200–5000 eV range from the ratios of the absolute elastic scattering electron intensities measured by a novel cylindrical mirror analyser and those by the Monte Carlo method. The inelastic mean free paths (IMFPs) of nickel used…
A novel cationic conjugated polymer, poly[(9,9-dihexyl-2,7-fluorene)-alt-co-(2,5-bis{3-[ (N,N-dimethyl)-N-ethylammonium]-1-oxapropyl }-1,4-phenylene)] dibromide, which is water-soluble and emits bright blue fluorescence both in solutions and as films, is synthesized through Suzuki coupling reaction and a post-polymeri…
Half-fringe photoelasticity was used to evaluate the two-dimensional state of stress in epoxy matrix micro-tensile specimens. The experimental technique is described in detail and demonstrated by the measurement of the stress distribution around a circular hole in a thin epoxy film subject to uniaxial tension. The res…