Materials Literature
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Multicomponent thermochromic systems contain a dye, a colour developer, and a solvent. Dye–developer interactions, including complex formation, have been examined in our previous study. In this paper, the interactions between the same developer (lauryl gallate) and a solvent (1-octadecanol) are characterised both thro…
Faster- and slower-relaxing versions of the title Mn12 compound have been obtained in pure forms that crystallize in the same space group and differ only in the identity of one lattice solvent molecule; solvent loss causes isomerization from the faster- to the slower-relaxing form.
Monodispersed ZnO nanoparticles are easily prepared by the thermolysis of EtZnO(i)Pr as a single molecular precursor and TOPO without any extra solvent as well as any oxygen source.
A biodegradable scaffold for skin-tissue engineering was designed using collagen and chitosan, which are common materials for biomedical application. The scaffolds containing different amounts of chitosan were prepared by mixing the collagen and chitosan solutions followed by removal of the solvent using a freeze-dryi…
The evolution equations for grain growth and coarsening have been derived in the open literature mainly based on phenomenological considerations. Applying a thermodynamic extremal principle, the evolution equations are derived in a rigorous way. All kinetic parameters are provided directly. Existing relations are prov…
The adsorption of NO and NO2 and the reaction between NO and O2were investigated on a Na-Y,FAU zeolite. The interaction between NO and Na-Y is weak and no IR absorption feature is seen upon room temperature adsorption. On the other hand, several NOx species were identified in the adsorption of NO2 bonded to Lewis acid…
Robust, water-soluble gold clusters protected by monolayers of ligands containing a short alkyl chain (C7) close to the gold surface and a triethylene glycol monomethylether unit (TEG) to impart solubility in water and other polar solvents were prepared and characterized. Thiol 7 (N1-{2-[2-(2-methoxyethoxy)ethoxy]ethy…
Nanoparticles of the Fe/Co alloy have been prepared by sonolysis of a Fe(CO)5 and Co(NO)(CO)3 mixture in diphenylmethane solution under argon. The as-prepared product is an amorphous material having 10 nm diameter particles. Upon annealing in argon at 600 °C for 5 h, an air-stable Fe/Co alloy is formed with an increas…
Nitrate ions, which are known as efficient inhibitors for the corrosion of aluminum, have been shown to become very aggressive in pitting of 2024 aluminum alloy in specific conditions. Plotting potentiokinetic curves and immersion tests revealed strong dissolution of 2024 alloy in nitrate solutions with or without chl…
spc-Ni/MgAl (spc: solid phase crystallization method) catalysts have been prepared from Mg–Al hydrotalcite-like compounds as the precursors and tested for steam reforming of CH4 into synthesis gas. The precursors based on [Mg(II)1−xAl(III)x(OH)2]x+(CO3−)x·mH2O, in which a part of Mg(II) ions were replaced by Ni(II) io…
A new bis(5-pyridyl-2-methylthien-3-yl)cyclopentene, as a photochromic bridging ligand, has been synthesized and the photocyclization quantum yield was found to increase in the presence of a metal ion.
Resonance Raman spectroscopy is used in order to investigate the behaviour of Pd/γ-alumina (2 wt.%) in the catalytic combustion of methane. Simultaneous spectroscopic and catalytic measurements allow an operando spectroscopic investigation of the catalyst under operational conditions. Temperature cycles were performed…
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…