Materials Literature
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The synthesis and photochemical properties are reported for a series of novel amphiphilic carboxyl polymeric phthalocyanines, with zinc (3a), aluminum (3b), ytterbium (3c) and hydrogen (metal-free, 3d) as the substituted central atom, respectively. The synthesis routes included cyclotetramerization of tetra-phthalonit…
Silicon nanocrystals (Si-ncs) have been produced by implantation of Si+ in excess into SiO2 followed by both annealing and passivation using argon or nitrogen. Nitrogen increases the photoluminescence (PL) emission and shifts the spectra toward the blue. The measured Si-nc diameter is 4.3 and 3.8 nm after annealing pe…
The use of suction rather than positive pressure hydrodynamic cavitation is suggested as an energy efficient green technology. The restriction orifice for creating hydrodynamic cavitation is fixed on the suction side of the pump, and the upstream and downstream pressures are kept low, at atmospheric pressure and parti…
We studied the application of LaCoO3 system cathode to improve the performance of segmented-in-series tubular type solid oxide fuel cells (SOFCs) operating at high temperature (1173 K). (La1−xSrx)CoO3 (LSC, x=0.2 or more) was chosen to take advantage of two of its properties: high electric conductivity and favorable b…
Polystyrene (PS) with pendant gold nanoparticles and PS-coated Fe(3)O(4) nanoparticles self-assemble into vesicle structures with PS and PS-coated Fe(3)O(4) nanoparticles in the wall and gold nanoparticles in the shell.
Unique supramolecular assemblies are constructed based on a saddle-distorted non-planar porphyrin, dodecaphenylporphyrin ( H 2 DPP ), and its metal complexes. The saddle distortion facilitates protonation of pyrrole nitrogens to afford a stable diprotonated porphyrin, which can act as an electron acceptor. A diprotona…
Non-wetting behavior of liquid Zn alloy sometimes occurs on high-tensile strength steels that usually contain Si and Mn. Many studies have been undertaken to improve the wettability of liquid Zn. In this work, we applied the sessile drop method to measure the change in contact angle and diameter of liquid Zn droplets…
Biopolyesters of polyhydroxyalkanoates (PHAs), including poly-3-hydroxybutyrate (PHB), co-polyester of 3-hydroxybutyrate and 4-hydroxybutyrate (P3HB4HB), and co-polyester of 3-hydroxybutyrate and 3-hydroxyhexanoate (PHBHHx) have been well investigated for their biocompatibility. For in vivo application, it is very imp…
The tungsten metallome of the hyperthermophilic archaeon Pyrococcus furiosus has been investigated using electroanalytical metal analysis and native-native 2D-PAGE with the radioactive tungsten isotope (187)W (t(1/2) = 23.9 h). P. furiosus cells have an intracellular tungsten concentration of 29 μM, of which ca. 30% a…
The photolabile NPPOC group has been successfully introduced into the 6-position of various glycopyranosides in 91-97% yield. Glycosylation of NPPOC-protected phenyl beta-D-thiogluco- and galactopyranosides with appropriate acceptors afforded the corresponding disaccharides in good yield. Excellent beta-stereoselectiv…
Elastic-plastic transitional stresses in a transversely isotropic thick-walled cylinder subjected to internal pressure and steady-state temperature have been derived by using Seth's transition theory. The combined effects of pressure and temperature has been presented graphically and discussed. It has been observed th…
A facile method for the preparation of dimorpholides of dithioacetylacetonate is described together with a X-ray single crystal structure of the ligand and of [Cd(msacmsac)(2)(NO(3))(2)] (msacmsac = dimorpholinodithioacetylacetonate). The cadmium complex has been used as a single source precursor for the deposition of…
The effects of zircon on sintering, composition and microstructure of fused magnesia powders were studied by XRD, SEM and EDAX. With the increase of zircon content up to 6 wt%, the strength of sintered samples increased but the apparent porosity decreased. 6 wt% is an appropriate content of zircon to possess better pr…
This is the first paper reporting the results of systematic study of the adsorption of Ar, C(6)H(6) and CCl(4) on the bundles of closed and opened multi-walled carbon nanotubes. Using grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations, we also study the effect of the introducing defects in the…
Hybrid micro-/nano-silica architectures made of bacterial-body-templated silica shell attached with fimbriae-templated silica nanotubes were prepared by using living fimbriaed bacteria E. Coli TG1 as templates, which can function as individual bioreactors to catalyze the hydrolysis of 4-nitrophenyl-beta-d-galactopyran…
The cross-linked polyurea support EnCat 30, its related macromolecular complex Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30NP nanocomposite are thoroughly investigated with SEM, TEM, ISEC and ESR in the solid state (SEM and TEM) and swollen state in THF (ISEC and ESR). Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30N…
Physical properties of polycrystalline La0.5Ba0.5MnO3 are reported from low temperature (10 K) up to above room temperature. An aim has been to obtain microscopic parameters and to search for the characteristic lengths in terms of which one can discuss the interplay between magnetic, electric, and phonon excitations.…
Polycaprolactone (PCL) is a semicrystalline polymer and has been fabricated into various forms such as membranes, films, matrices, fibers, micro/nano particles, capsules and reservoir devices for drug delivery and tissue engineering due to its good biocompatibility. In this study, microporous PCL matrices (MPM) with 1…
The waste and highly hazardous coal ash from the power plants is proved to be a potential source for the production of low cost mullite glass ceramics when mixed with alumina at very high temperatures produced by plasma. In this present work, the coal ash and alumina are mixed at different weight \npercentages and tre…
Highly ordered mesoporous SBA-15 silica particles with rodlike morphologies were synthetically controlled for the first time by adjusting hydrochloric acid concentration in the range of 0.1-5.0 M in the presence of block copolymer template under static condition but with no addition of inorganic salts. This work illus…