Materials Literature
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Transparent, polycrystalline MgAl2O4 ceramics have been fabricated by sintering optimized-configuration, powder compacts formed from a material prepared by flame spray pyrolysis. Transparent parts (80% light transmission at 2 mm thickness) could be obtained after pressureless sintering in air at 1280°C/3 h, followed b…
Pt(II) complex of meso-tetrakis(pentafluorophenyl) N-confused porphyrin (1-Pt) efficiently binds Cl(-), Br(-), and I(-) anions at the peripheral N-H, while deprotonation proceeds with F(-), H(2)PO(4)(-), and OH(-) in CH(2)Cl(2) solution; neutral and anionic structures of 1-Pt were characterized by single crystal X-ray…
Ru-based metallostars Na(4){Ru[Ln(2)bpy-DTTA(2)(H(2)O)(4)](3)} (Ln = Y, Gd, and Eu) have been self-assembled in aqueous solution and their relaxivity and optical properties unravelled. The synthesis and the purification of the new, highly stable heptametallic entities have been optimized for the diamagnetic Y(3+) comp…
The fabrication process and the growth mechanism of titanium/titania nanotubes prepared by anodization process is reviewed, and their applications in the fields of dye sensitized solar cells, photocatalysts, electrochromic devices, gas sensors, and biomaterials are presented. The anodization of Ti thin films on differ…
Multifunctional thermoset composites were made from polyester resin, glass fiber mats and carbon nanofiber sheets (CNS). Their flaming behavior was investigated with cone calorimeter under well-controlled combustion conditions. The heat release rate was lowered by pre-planting carbon nanofiber sheets on the sample sur…
Terarylene derivatives having benzothienyl moieties, 4,5-bis(2-methylbenzo[b]thiophene-3-yl)-2-phenylthiazole, 4,5-di(benzo[b]thiophen-3-yl)-2-phenylthiazole are synthesized and their photochromic properties are studied. These photochromic molecules show fairly high photoreactivities in both solution and bulk amorphou…
Ring-opening polymerization of epoxidized soybean oil (ESO) catalyzed by boron trifluoride diethyl etherate (BF3·OEt2), in liquid carbon dioxide, was conducted in an effort to develop useful biobased biodegradable polymers. The resulting polymers (RPESO) were characterized by FTIR spectroscopy, differential scanning c…
A BCNO-based long-persistent phosphor prepared by a low-temperature liquid-phase route is investigated. It shows a phosphorescence peak centered at 520 nm and its afterglow decay curve fits t − 0.93 . Electron paramagnetic resonance confirms the presence of a paramagnetic center, the signal of which exhibits a synchro…
A cyanide-free silver plating bath containing uracil as a complexing agent was investigated. The electrochemical properties of a silver complex were studied on a disk glassy carbon electrode by means of cyclic voltammetry and a rotating disk electrode. The brightness and adhesion of silver deposits obtained from this…
Influence of NaCl and NaBr and their concentration on assembly of polyelectrolyte multilayers and their compression behavior was studied using poly(diallyldimethylammonium chloride) (PDADMAC) and poly(4-styrenesulfonic acid-co-maleic acid, 1 : 1 SS:MA) sodium salt (PSSMA 1 : 1) as the building blocks. Stepwise growth…
Novel bolaamphiphilic gelators on the basis of L-glutamic acid, which use rigid aromatic substituents together with different lengths of alkyl chains as spacers, were synthesized. Depending on the structure, some of the molecules can gel a broad variety of solvents, from hexane to water/methanol mixture. The correspon…
Robust macroporous foam coatings with high loading capacity were rapidly fabricated by layer-by-layer deposition of oppositely charged photo-reactive polyelectrolyte complexes combined with subsequent photo-reaction.
The heterointerface electrode, porous on porous , was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of and . The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of and . The results are consistent with…
Length dependence of the thermal conductivity of （5, 5） carbon nanotube at 300 K and 1000 K is studied by nonequilibrium molecular dynamics simulations. At room temperature the thermal conductivity shows linear length dependence for the tube length less than 40 nm, which shows completely ballistic transport. The calcu…
A novel time-reversal symmetry breaking state is found theoretically in the Josephson junction between the two-gap superconductor and the conventional s-wave superconductor. This occurs due to the frustration between the three order parameters analogous to the two antiferromagnetically coupled XY-spins put under a mag…
By using both bipyridyl and acyclic amine ligands, two extended inorganic–organic hybrids based on ε-Keggin type of molybdogermanate capped with four nickel(II)-organic cations, [GeMoV8MoVI4O36(µ2-OH)4{Ni(pda)(H2O)}2{Ni(pda)}{Ni(pda)(bpe)}(bpe)0.5]n (1) and [GeMoV8MoVI4O36(µ2-OH)4{Ni(pda)}2{Ni(pda)(bpy)0.5}{Ni(pda)(bp…
Interpenetrating networks (IPN) consist of two or more networks of different components which are entangled on a molecular scale and cannot be separated without breaking at least one of the networks. They are of great technological interest because they allow the blending of two or more otherwise incompatible properti…
Reaction of [(PY5Me2)V(MeCN)]2+ with [M(CN)6]3- (M = Cr, Mo) affords the star-like clusters [(PY5Me2)4V4M(CN)6]5+, exhibiting S = 9/2 ground states that are exceptionally well-isolated in energy.
Plasma-treated multi-walled carbon nanotubes (MWCNTs) have been used as a substrate for the deposition of Pt nanoparticles. These Pt nanoparticles deposited on MWCNTs showed a higher catalytic activity in a methanol electro-oxidation reaction even with a lower amount of precious metal catalyst used. The higher catalyt…
BACKGROUND: Previous attempts in heart valve tissue engineering (TE) failed to produce autologous valve replacements with native-like mechanical behavior to allow for systemic pressure applications. Because hypoxia and insulin are known to promote protein synthesis by adaptive cellular responses, a physiologically rel…