Materials Literature
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Ruthenium oxide was electrodeposited onto a carbon nanotube (CNT) film substrate with a three-dimensional porous structure at the nanometer scale. For comparison, ruthenium oxide was prepared on a Pt plate and carbon paper substrate. Microstructures of the ruthenium oxide-based electrodes examined by scanning and tran…
Real possibilities of FTIR-spectroscopy application along with thermal analysis (TG/DTA) for examining clay minerals in rocks are presented. These methods were used for determination of mineral composition in sedimentary rock samples from the shaft No.4 Frenstat -West, Northern Moravia, CZ. Previously, the samples rep…
The influence of molecular conformation on the oxidation (ionisation) potential and electronic structure associated with several TPD-style hole transport materials has been assessed through a combination of single crystal X-ray diffraction, electrochemical and spectroelectrochemical methods and DFT calculations. The i…
The luminescence of the vanadate garnet, Ca 2 Na Mg 2 V 3 O 12 , activated with trivalent europium is evaluated and discussed as a potential ultraviolet light-emitting diode (UV-LED) phosphor. This single phosphor is capable of converting the ultraviolet emission of a UV-LED into white light with good luminosity and c…
A pyridyl urea based low molecular weight supramolecular hydrogelator has been synthesized; crystallized from its gelling solvents, the single crystal structure of the gelator molecule interacting with its gelling solvents reported herein is the first example in the literature.
We report the discovery of a new, chemical route for 'activating' the hydrogen store MgH2, that results in highly effective hydrogen uptake/release characteristics, comparable to those obtained from mechanically-milled material.
A comparative investigation of mechanical properties of Ti–6Al–4V titanium alloy with microcrystalline and submicrocrystalline structures in the temperature range of 20–600°C has been carried out. The grain sizes under the submicrocrystalline and microcrystalline conditions are 0.4 and 10 μm, respectively. The alloy w…
Emission and excitation spectra and decay kinetics are studied for the luminescence of undoped LuAG and YAG crystals. Two emission bands are located at 4.8 eV and 3.95 eV in YAG and 4.9 eV and 3.65 eV in LuAG, excited in the Eexc>6.5 eV energy region. They are both characterized by a relatively slow (µs) decay time, a…
The thermodynamically most stable polymorph under ambient conditions is almost without exception the most desirable crystalline form for development by a pharmaceutical company. It is, therefore, beneficial to discover and to characterize this polymorph at the earliest possible stage of development. A screen for disco…
The results of morphological and electrochemical characterizations of Cu 0.8 Pt 0.2 , Cu 0.75 Pt 0.25 , and Cu 0.71 Pt 0.29 dealloying in 1 M H 2 S O 4 are presented. The critical potential values for these systems were measured and compared to previously reported results for the Ag–Au system. The differences between…
Environment-friendly, fully biodegradable, ‘green’ composites based on plant based fibers and resins are increasingly being developed for various applications as replacements for non-degradable materials derived from petroleum that are currently being used. Unlike petroleum, plant based proteins, starches and fibers a…
An enzymatically cleavable low molecular weight gelator-(model) drug conjugate system can be employed to effect a two-step enzyme mediated drug release, demonstrating the potential of LMWG systems for the development of drug delivery devices.
A wide variety of electroactive materials are accessible based on a cyclopentadithiophene skeleton. This Feature Article describes the synthesis of these materials, examines their intriguing properties (i.e. high electrical conductivity, low band-gap and extended π-conjugation) and discusses the complex relationship b…
Supramolecular synthesis, by combining molecules through non-covalent interactions, makes it possible to build up extremely sophisticated supramolecular assemblies in the solid state and offers endless architectural possibilities.
The microstructure and properties of a novel magnesia phosphate cement (MPC) with large amounts of fly ash were studied in the present work. For comparison purposes, reference specimens without the incorporation of fly ash were also investigated. The effect of fly ash content on the properties of MPC was studied with…
Dislocation structure in rapidly solidified Mg97Zn1Y2 ribbon with the long period stacking order (LPSO) phase is investigated by conventional transmission electron microscopy. In the grain with the LPSO phase there are no a dislocations lying on the basal plane, and a number of c+a dislocations are visible. On the oth…
Controlled release formulation of an herbicide, 2,4-dichlorophenoxyacetate (24D) was developed by the virtue of the formation of organic–inorganic nanohybrid material and its ion exchange property. The inorganic Zn–Al layered double hydroxide (ZAL) was used as a matrix, hosting an active agent or a guest, 24D by self-…
Silicon micro- and nanostructures are found in integrated circuits, sensors, and actuators, and the performance and reliability of many of these devices are affected by thermal conduction. Conduction processes in micro- and nanostructures are complicated by phonon interactions with grain and material boundaries. Phono…
Siloxane-based organic–inorganic hybrid monoliths with well-defined macropores and/or mesopores have been synthesized by a sol–gel process, accompanied by polymerization-induced phase separation. Using aklyltrialkoxysilanes and alkylene-bridged alkoxysilanes, two different categories of organosiloxane networks have be…
The use of N-methyldiethanolamine (mdaH2) in reactions with Fe(III) and Ni(II) sources has led to Fe22 and Ni24 products; the clusters are the highest and second-highest, respectively, homometallic clusters for these metals to date, and possess S = 0 and S = 6 ground states, respectively.