Materials Literature
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Rheological properties of poly(ethylene oxide)/poly(vinylidenefluoride)-(hexafluoropropylene) immiscible polymer blends were studied in the low frequency domain. According to the blend composition, two critical compositions were determined by rheology. These compositions exhibit a power law relaxation spectrum with a…
Reactions of Schiff bases with copper(II), nickel(II), iron(II) and manganese(II) sources yielded tetranuclear complexes of [Cu4(Hhsae)4] · 2H2O·4CH3CN (1), [Ni4(sae)4(MeOH)4] (2), [Fe4(Hsapd)4]·2H2O·4MeOH (3) and [Mn4(sap)4(MeOH)4]·H2O (4), (H3hsae=2-(4-hydroxysalicylideneamino)-1-ethanol, H2sae=2-salicylideneamino-1…
Biomolecular interactions are used to programme the assembly of multi-layer, multi-functional CNT-based conjugates.
Mn2+-doped GeO2–B2O3–ZnO (GBZ) glasses were investigated and developed as long-lasting phosphorescence host materials. Transparent glass-ceramics were obtained after heat-treated at the first crystallization temperature for 20 min. By X-ray diffraction measurement and SEM observation, it is clarified that Zn2GeO4 crys…
This study investigated some of the important properties of single-layer particleboard panels made from bamboo (Dendrocalamus asper), rice straw, eucalyptus (Eucalyptus camaldulensis), or combinations of them. A total of 40 experimental panels were manufactured from each material type. Panels were also made using a 50…
Local environments of rare earth ions are studied in a rare earth rich glass (Glass A wt%: 51.0SiO 2 -8.5B 2 O 3 -12.2Na 2 O-4.3Al 2 O 3 -4.8CaO-3.2ZrO 2 -16.0RE 2 O 3 with RE=Nd or La) developed for radioactive waste immobilisation. The aim is to determine the structural environment of rare earths in this glass accor…
The underlying physics of the application of low-temperature, low-pressure reactive plasmas in various nanoassembly processes is described. From the viewpoint of the "cause and effect" approach, this Colloquium focuses on the benefits and challenges of using plasma-based systems in nanofabrication of nanostructured si…
The design of new high-efficient gas turbines is closely associated with the need to increase the service temperature of its components. Today, the applicability of the polycrystalline Ni-base superalloy 718 is limited by its susceptibility to fast intergranular cracking during low-cycle fatigue in combination with ho…
Polyimide nanocomposites prepared by the in situ generation of crosslinked organosilicon nanophase by sol-gel techniques were investigated by dielectric relaxation spectroscopy, themally stimulated depolarization currents and dynamic mechanical analysis. Two series of samples were investigated with molar mass 5000 and…
In this paper, frequency-dependent guided-wave characteristics of waveguide based periodic structures loaded with transversal strip layers of frequency selective surfaces (FSS) are extensively studied in terms of per-unit-length transmission parameters, i.e., complex propagation constant and complex wave impedance. Su…
A set of porphyrin-triarylamine hybrids have been synthesized in good yield by Sonogashira palladium-catalyzed cross-coupling reactions between the zinc complex of 5,15-diethynyl-10,20-dimesitylporphyrin and the appropriate iodophenyldiarylamines. The crystal structure of porphyrin 1 shows that the dihedral angle betw…
A kinetic model for the dehydration of lithium sulfate monohydrate is proposed in order to account for experimental data obtained on single crystals by thermogravimetry at 80 degrees C under fixed water vapour pressure, and by optical microscopy. This model is based on the assumptions of Mampel's model, the nucleation…
Today, it is known that the [Fe(L 222 (N 3 O 2 ))(CN) 2 ]·H 2 O complex exhibits an atypical thermal spin-crossover behaviour probably connected to an unusual change of the iron(II) environment from a six to a seven coordination sphere. Here, we show that the photomagnetic properties of this derivative are also atypic…
The synthesis of carbon nanotubes (CNTs) and carbon nanofilaments (CNFs) was investigated using the catalytic decomposition of acetylene over alumina-supported palladium catalysts prepared with the impregnation of palladium acetylacetonate (Pd/Al2O3) and deposition of dodecanethiol-protected palladium nanoparticles (D…
We report on an electrochromic phenomenon in transition metal oxide materials induced by a novel mechanism involving charge/discharge of a solid-state electrochemical pseudocapacitor. Thin film nanocomposites of polycrystalline nickel oxide nanoparticles embedded in an amorphous tantalum oxide electrolyte matrix have…
We previously reported that seven pregnane glycosides including cynatroside B isolated from the roots of Cynanchum atratum significantly inhibited acetylcholinesterase (AChE) activity. In the present study, we have characterized the mode of AChE inhibition of cynatroside B, the most potent of these isolated pregnane g…
EXAFS has been used to directly show the existence of Au...Au interactions in dissolved Au(I) complexes for the first time; the information has been used to understand the optical properties of these materials.
The reaction of Ln[N(SiMe3)2]3.[LiCl(THF)3](x)(Ln = Yb and Er) with N-confused tetraphenylporphyrin (H2NCTPP) followed by Na(L(OMe))(L(OMe)=(eta5-C5H5)Co[P(=O)(OMe)2]) gives (NCTPP)Ln(L(OMe)), whose X-ray structures exhibit an eta2 agostic interaction between the metal centre and the inner C-H bond of the NCTPP ligand.
An electrochemical technique for preparation of a molecularly imprinted overoxidized polypyrrole (oPPy) film and its recognition property for bile acids are investigated, aiming for application to a bile acid sensor and clarification of the principle of the recognition mechanism with the quartz crystal microbalance. T…
Abstract The synthesis and magnetic behavior of four new dinuclear iron(II) complexes Fe 2 2a‐d × 4Py with the iron in an octahedral coordination sphere is presented in this paper. The complex c is a high‐spin complex over the whole temperature range investigated, while the complexes a,b , and d perform a partial low‐…