Materials Literature
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The syntheses, structures and magnetic properties are reported for three new manganese complexes containing the Schiff-base ((2-hydroxy-3-methoxyphenyl)methylene)isonicotinohydrazine (H(2)hmi) ligand. Complex [Mn(II)(H(2)hmi)(2)(MeOH)(2)Cl(2)] (1) was obtained from the reaction of H(2)hmi with MnCl(2) in a MeOH-MeCN m…
We report on the synthesis and mesomorphic properties of five new series of azo functionalized phasmid-like compounds formed by covalent bonding. They consist of both symmetric and non-symmetric molecules. Most of these compounds are found to be liquid crystalline, with unusual behavior. They exhibit mainly nematic, c…
A new method for the functional modification of polyethersulfone (PES) is described in this paper in which PES was sulfonated by chlorosulfonic acid firstly and then chlorinated by phosphorus pentachloride. Thereby, chlorosulfonic groups (-SO2Cl) were introduced in PES successfully, and the degree of the chlorosulfona…
Purpose: of this paper is to present the research results of silicon nitride SiNx films used for industrial silicon solar cells and for third generation solar cells. Design/methodology/approach: The SiNx films were deposited using RFand LF-PECVD methods. The optical and structural properties were investigated by spect…
Reduction of metal is an important defense mechanism in microorganisms as a way to manage metal toxicity. The inherent, clean, nontoxic and environmentally friendly ability of eukaryotic and prokaryotic microorganisms to form the metal nanoparticles is particularly important in the development of nanobiotechnology. Ne…
Nanotechnology is actively being used to develop promising diagnostics and therapeutics tools for the treatment of cancer and many other diseases. The unique properties of nanomaterials offer an exciting frontier of possibilities for biomedical researchers and scientists. Because existing knowledge of macroscopic mate…
This project aims to study characteristics and mechanical properties i.e. hardness and fracture toughness of alumina matrix composite materials containing zirconia and strontium oxide. Two groups of composite specimen were fabricated: (i) Al 2 O 3 matrix with 3 mol% Y 2 O 3 - ZrO 2 , varied from 10, 20, 30 and 40 vol%…
Summary A study was undertaken to determine the effect of chitosan film or vacuum and modified atmosphere (MA) (100% CO2) packing on microbial (psychrotorophic, mesophilic aerobic, lactic acid bacteria, Enterobacteriaceae and Pseudomonas counts) and chemical [(pH, total volatile bases nitrogen (TVB-N) and lipid oxidat…
The inhibitive action of extract of curry leaves (Murraya koenigii) on carbon steel in 1N HCl has been studied using weight loss, gasometric studies and electrochemical polarization and AC impedance measurements. The effect of temperature on the corrosion behaviour of carbon steel in 1N HCl with optimum concentration…
Mullite-cubic boron nitride (cBN) composites were prepared using mullite and cBN powders by spark plasma sintering at temperatures of 1500-1700°C for a holding time of 600 s under a pressure of 100 MPa. Densification, microstructure and hardness of the mullite-BN composites and the phase transformation of cBN to hexag…
Bile salts form aggregates in aqueous solutions which were shown to efficiently solubilize aqueous insoluble photochromic compounds. Photochromic switching was observed for a spiropyran and a diarylethene. In the case of the spiropyran, the incorporation into the bile salt aggregate led to improved hydrolytic stabilit…
The non-solvated crystals of 1,4-diazabicyclo[2.2.2]octane hydroiodide (dabcoHI, [C6H13N2]+I−) obtained at normal conditions are hexagonal and exhibit giant dielectric response and anisotropic relaxer properties. The isochoric crystallization of dabcoHI at 1.80 GPa yields non-solvated dabcoHI crystal and a [C6H14N2]2+…
The first homogeneous metal-catalysed hydrolysis of ammonia-borane or amine-borane adducts for hydrogen generation, using a stable organometallic complex [IrHCl{(PPh(2)(o-C(6)H(4)CO))(2)H}], is reported.
This two-volume work covers ultrafast structural and electronic dynamics of elementary processes at solid surfaces and interfaces, presenting the current status of photoinduced processes. Providing valuable introductory information for newcomers to this booming field of research, it investigates concepts and experimen…
In surface science, much effort has gone into obtaining a deeper understanding of the size-selectivity of nanocatalysts. In this article, electronic and chemical properties of various model catalysts consisting of Au are reported. Au supported by oxide surfaces becomes inert towards chemisorption and oxidation as the…
BACKGROUND: Sea urchin is a major model organism for developmental biology and biomineralization research. However, identification of proteins involved in larval skeleton formation and mineralization processes in the embryo and adult, and the molecular characterization of such proteins, has just gained momentum with t…
Self-ordered nanoporous nickel oxide/fluoride composite layers were grown by anodization of a Ni substrate in 85% solution containing 0.5 M . This oxide film contained a very high concentration of (up to 30–40%). The layers show a very good electrochromic performance. In fact, the nanoporous oxide/fluoride films exhib…
In this paper, we study thermal disturbance and its impact on reliability using a novel measurement structure - the micro-thermal stage (MTS). The small thermal time constant of the MTS extends the time-scale of temperature dependence measurement to ∼100 µs. The reliability of phase-change memory (PCM) is evaluated in…
We prepared a series of C3-symmetry discogens with three 1,2,3-triazoles and a central benzene ring by a copper-catalyzed “click reaction” between 1,3,5-triethynylbenzene and 3,4,5-trialkoxybenzyl azides. According to the differential scanning calorimetry (DSC) data, compounds with octyl and dodecyl peripheries showed…
A layered ternary carbide Ti3AlC2 was synthesized by pressureless calcining process from the mixture of titanium, aluminum and graphite powders. Almost single-phase Ti3AlC2 was obtained after calcining at 1400°C for 4 h. The microstructural evolution during the formation of Ti3AlC2 was examined at the temperature from…