Materials Literature
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Abstract The new L ‐lysine alkali‐metal salts 1 – 5 (M + =Na + and K + ) with different alkyl groups at the N α ‐position were easily synthesized, and their hydro‐ and organogelation properties were investigated. All compounds were H 2 O‐soluble, and some salts, especially the potassium salts, functioned as a hydrogen…
The fabrication of large-scale ZnO ordered pore arrays by the potentiostatic electrochemical deposition method based on a two-dimensional ordered colloidal monolayer template is reported. The pore morphology evolves from hemispherical to a well-like structure by controlling the deposition potential.
Two new hexadeca-carboxy phthalocyanines have been synthesised and evaluated for their photodynamic activities; the zinc(II) analogue exhibits a high class-A scavenger-receptor mediated photocytotoxicity towards the J774 murine macrophage cell line.
A critical review is given of the various historical attempts to formulate a general, three-dimensional theory of failure for broad classes of homogeneous, isotropic elastic materials. Following that, a recently developed two-parameter yield/failure criterion is compared with the historical efforts and it is further i…
The chemical interactions between different base glass sealants and components of solid oxide fuel cells (SOFCs) were investigated. The SOFC materials considered are stabilized with 8 mol % (as electrolyte and part of the anode), Ni (as part of the anode), and the oxide-dispersion-strengthened (ODS) alloy (as intercon…
The commercial pure Mg, AZ31 and AZ61 alloys were severly plastic-deformed through equal channel angular pressing (ECAP). The grain size of pure Mg was decreased from 400 to 80 μm after ECAP and the 4 ECA pressed AZ31 alloy revealed the mixed microstructure of fine grains of less than 5 μm and coarser grains of approx…
A variable optical attenuator (VOA) based on polymer stabilized twisted nematic (PSTN) liquid crystal (LC) is demonstrated. Comparing with the normal twisted nematic LC-based VOA, PSTN exhibits a much faster response time. Moreover, the polymer networks effectively eliminate the backflow effect which exists in the nor…
The crystallization kinetics of high-density amorphous ice (HDA), made by pressure-amorphizing hexagonal ice at 77 K, and its dependence on heating rate and pressure was studied on isobaric heating between 0.2 and 1.9 GPa by displacement-temperature curves. The crystalline phases, recovered at 77 K and 1 bar, were cha…
Microwave irradiation of solutions of Zn(NO3)2 and urea provides a straightforward route to a-axis oriented crystals of needle-like morphology.
Eco-composites made from poly(lactic acid) (PLA), poly(butylene succinate) (PBS) and corn starch (CS) with a designable interface were prepared by reactive processing using aliphatic isocyanates as coupling agents. Hexamethylene diisocyanate (HDI) and lysine diisocyanate (LDI) were used as aliphatic isocyanates. Copol…
Clothing pressure distribution in tight-fit sportswear was simulated by using numerical computational method. Three sets of tight-fit sportswears were simulated on the basis of their mechanical properties. In addition, a 3D human body was also simulated in order to investigate its interaction with sportswear in the we…
Small acidic peptides comprising a repeating Phe-Asp sequence motif exert control, in vitro, on the morphology of calcite crystals similar to natural proteins from calcified tissues.
Abstract The novel copper(I)‐thioantimonates(III) (enH 2 2+ ) 0.5 Cu 2 SbS 3 ( I ) (en = ethylendiamine), (1, 3‐DAPH 2 2+ ) 0.5 Cu 2 SbS 3 ( II ) (1, 3‐DAP = 1, 3 diaminopropane) and (1, 4‐DABH 2 2+ ) 0.5 Cu 2 SbS 3 ( III ) (1, 4‐DAB = 1, 4‐diaminobutane) were synthesized under solvothermal conditions reacting Sb 2 S…
The 1-phosphanorbornadiene-rhodium complex (Rh-PNBD) anchored on a mesostructured porous silica matrix is the first example of a rhodium center chelated by a phosphorus and an oxygen atom belonging to the anchoring siloxane moiety. These new hybrid silicas behave as very active recyclable hydrogenation catalysts, whic…
Sodium hexametaphosphate (HMP) stabilized nickel hexacyanoferrate (NiHCF) nanoparticles were prepared in aqueous solution and were successfully extracted into an organic phase using cetyltrimethylammonium bromide (CTAB) as the surfactant. Dynamic Light Scattering (DLS) studies suggest that the average size of the nano…
Homologous series of chiral (S) 4-(1-methylheptyloxycarbonyl)-phenyl and achiral 4-(4-heptyloxycarbonylphenyl 4-(perfluoroalkanoyloxyhexyloxy)biphenylates or 4-(alkanoyloxyhexyloxy)biphenylates, chiral (S) and racemic (R,S) 4′-(1-methyl heptyloxycarbonyl)biphenyl-4-yl 4-(perfluoroalkanoyloxyhexyloxy)benzoates or 4 (al…
The locus of oxidation in square-planar nickel(ii) oxamato complexes can be continuously shifted from the metal to the ligand by an appropriate choice of electron-donating substituents on the aromatic moiety of the ligand.
We obtained a high-luminance red phosphor by spray pyrolysis without postheating treatment using a high-temperature furnace with a long residence time and the addition of alkali metal salts to the precursor solution. The luminance under UV and vacuum UV radiation was about 100 and 90% that of the conventional phosphor…
A new approach to the design and control of shape memory alloy (SMA) actuators is presented. SMA wires are divided into many segments and their thermal states are controlled individually in a binary manner. The Peltier effect is used for heating and cooling individual segments of the SMA. Unlike the traditional way of…
Gold alkene complexes [Au(bipyR)(eta2-alkene)][PF6] (bipyR = 6-alkyl-2,2'-bipyridine) have been obtained by reaction of gold(III) oxo complexes [Au2(bipyR)2(mu-O)2][PF6]2 with alkenes. The crystal structure of the styrene adduct [Au(bipy(ip))(eta2-CH2=CHPh)][PF6] (bipy(ip) = 6-isopropyl-2,2'-bipyridine) has been solve…