Materials Literature
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Intrinsically conducting polymer (ICP)/textile composites were prepared by coating polypyrrole (PPy) or poly (3,4-ethylenedioxythiopene) (PEDOT) on the fabrics through chemical and electrochemical oxidation of pyrrole or EDOT. We investigated the effects of the preparation conditions on the properties of the resulting…
Several liposomal formulations have been successfully developed and reached the market place. Examples are doxorubicin, daunorubicin, and amphothericin containing liposomes. A number of other lipos...
Abstract Combinatorial gradient techniques are used to map the morphology dependence of thin symmetric diblock copolymer films on film thickness and substrate surface energy. An inversion from symmetric to anti‐symmetric lamellar morphology occurs with a progressive change in surface energy. An intermediate neutral re…
The effect of lateral 1-substitution in naphthalene-2,7-diol with CH3, CN and Cl on mesomorphic properties is studied. DSC and X-ray diffraction, texture observation and dielectric measurements have been performed. For the non-substituted core the high-temperature BX phase and the B4 phase occur while in CH3 and Cl su…
A metal-organic-polyoxometalate hybrid compound with two functional centers consisting of a rhodium(I)bis(diphenylphospine) unit connected through two alkylene bridging groups to a lacunary Keggin type polyoxometalate was synthesized and used as an effective, recyclable hydrogenation catalyst in monophasic and aqueous…
A pseudo two-dimensional model is developed for the general application of supercapacitors consisting of an oxide/carbon composite electrode. The model takes into account the diffusion of protons in the oxide particle by employing the method of superposition. system is modeled as a specific example. From the simulatio…
SUMMARIES For millennia parchment has been used as a writing material, commonly in the form of books, scrolls or folded sheets. Parchment is made from animal skins, predominantly from calf, sheep or goat. Parchment and skins have the characteristic molecular packing associated with other collagen rich structures such…
In this study, the Volta potential distribution over the surface of duplex stainless steels (DSSs) has been mapped for the first time with submicrometer resolution by scanning Kelvin probe force microscopy (SKPFM). The different magnetic properties of ferrite and austenite enable the utilization of magnetic force micr…
Silica- and alumina-doped nanocrystalline ceria/zirconia (Ce0.5Zr0.5O2) were prepared in one step by flame-spray pyrolysis. Structural and textural properties were characterized using high-resolution electron microscopy, nitrogen adsorption and X-ray diffraction. Oxygen exchange capacity was studied by pulse thermal a…
RATIONALE AND OBJECTIVES: To compare the effect on image quality of a 1.0 mol/L gadolinium chelate with that of two 0.5 mol/L gadolinium compounds. MATERIALS AND METHODS: Five healthy volunteers underwent a mono-station 3D MRA exam (Siemens SONATA, Erlangen, Germany) four times using four separate gadolinium preparati…
Metal 1,4,8,11,15,18,22,25-octakis(hexylsulfanyl)phthalocyanines exhibit a weak absorption band in the 450-600 nm region, leading to novel dyes that include the red lead metallated derivative that has been characterised by X-ray crystallography.
Abstract Polystyrene‐Organo Montmorillonite (PS‐MMT) nanocomposites were prepared by suspension free radical polymerization of styrene in the dispersed organophilic montmorillonite. The results of X‐ray diffraction (XRD) and Transmission Electron Microscopy (TEM) indicated that exfoliated nanocomposites were achieved.…
Disulfide-linked cyclic porphyrin oligomers from dimer to tetramer can be selected and amplified virtually quantitatively from a dynamic combinatorial library using bis-thiol substituted zinc(II) porphyrin units with appropriate amine donor templates.
Abstract The foaming of aluminum melt of LKR‐Austria is investigated. The foaming was performed in a furnace chamber at adiabatic conditions to keep the foam in liquid state. The foams were taken out from the chamber after 1, 10 and 100 min isothermal holding time and cooled in air or quenched in water. The final cell…
N,N,N,N-Tetramethylammonium dicyanamide (Me4NDCA) has been examined via differential scanning calorimetry (DSC), thermogravimetric analysis, conductivity, single crystal X-ray diffraction and 1H nuclear magnetic resonance (NMR) analyses, and was found to be highly conductive in the solid state (σ = 10−3 S cm−2 at 420…
Precipitations in Mg–Li–Zn ternary alloys containing 4 to 13%Li and 4 to 5%Zn (in mass%) with α or β single phase, or with (α+β) dual phases were investigated using a micro-Vickers hardness measurement and transmission electron microscopy. Age hardening in the α phase alloy was found to occur, which was attributed to…
The cruciform pentamers 3a-g were synthesized by a combined Horner-Sonogashira approach; their band gaps vary significantly with emission varying from blue to red depending upon their substituent pattern.
Real-time, temperature-resolved synchrotron powder X-ray diffraction data and Rietveld refinements were used to investigate the behavior of the todorokite structure from 100 to 820 K. At 298 K, the lower valence cations, such as Mn 3+ , occupy large octahedral sites at the edges of the triple chains, and four water/ca…
Ordered self-supported ultrathin carbon nanowire arrays with small mesopore sizes have been fabricated for the first time employing mesoporous silica MCM-41 as the templates, and two possible related mechanisms are proposed.
Because the rate of anodic deposition for manganese oxide is much larger than that for nickel oxide, the nickel content of binary Mn-Ni oxide can be increased by using a relatively positive potential region and a high Ni 2 + / Mn 2 + ratio (10/1) in the deposition solution. The capacitive characteristics of this binar…