Materials Literature
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A new amorphous high-Tg azo polymer with benzothiazole group in the side chain, poly{2-{4-[[N-(2-methacryloyl)ethyl]-N-ethyl]phenylazo}-6-nitro-benzothiazole} (pBTAMC), was prepared and its optical storage properties were investigated in thin films. Comparison is made with three push-pull azobenzene polymers: poly{4-[…
The effect of plasma treatment on surface characteristics of polyethylene terephthalate films was investigated using helium and oxygenated-helium atmospheric plasmas. Sample exposure to plasma was conducted in a closed ventilation test cell inside the main plasma chamber with variable exposure times. The percent weigh…
The influence of three exogenous ligands (acetate, formate and carbonate) on the condensation process of the [Mo2O4]2+ dioxocation with the [O3PCH2PO3](4-) group has been investigated. Four cyclic or bicyclic compounds have been isolated and characterized by X-ray diffraction studies. Two closely related acetato and f…
Silicon-bridged bis(benzene)chromium complexes (sila[1]chromarenophanes) undergo facile transition metal-catalyzed ROP at ambient temperature in the presence of Karstedt's catalyst to yield polychromarenylsilanes, the first homopolymers with main chains of Cr(arene)(2) and organosilane units.
To mark the 100th anniversary of cellulose diacetate in 2004, academic expertise on the physical and chemical properties of cellulose acetates (CA) is combined in this volume with industrial knowledge on technology and product properties.
The electrochromic mechanism of IrO 2 thin films was investigated with electrochemical quartz crystal microbalance and surface analyses such as X-ray photoelectron spectroscopy, Auger electron spectroscopy, and scanning electron microscopy. Prior to pulsed anodic current electrodeposition of IrO 2 thin film on indium-…
A straightforward grafting of a polycationic phosphorus-containing dendritic shell onto polystyrene nanoparticles leads to dendronized nanoparticles showing unique behavior.
Hyperthermophiles are a group of microorganisms that have their optimum growth temperature above 80 degrees C. More than 60 species of the hyperthermophiles have been isolated from marine and continental volcanic environments. Most hyperthermophiles belong to Archaea, the third domain of life, and are considered to be…
Ferrimagnetic glass-ceramics are useful as thermoseeds for hyperthermal treatment of malignant tumors, especially those located in deep parts of the body, since hysteresis loss heating occurs locally at the cancer site when they are implanted around the tumor and subjected to an alternating magnetic field. In the pres…
Three-dimensional long range ordered hollow SiC and filled SiCN sphere assemblies were prepared for the first time by embedding low molecular weight pre-ceramic polymers of polymethylsilane and polysilazane into sacrificial 3DOM carbon templates which were subsequently burned out in air after pyrolysis under a nitroge…
A polypyrrole (PPy)–zigzag metal wire composite film actuator, prepared electrochemically from a methyl benzoate solution of tetrabutylammonium trifluoromethanesulfonate (TBACF3SO3), showed up to 21.4% electrochemical strain, much larger than that (12.8%) of the corresponding PPy–CF3SO3−, driven in aqueous NaPF6 solut…
Applicability of a solution model, i.e. Jouyban-Acree model (JAM), for calculating surface tension of binary and ternary solvents at various temperatures has been shown employing experimental surface tension data collected from the literature. The accuracy of the model was evaluated by calculating average percentage d…
Abstract A typical aluminum alloy, AA7075, was immersed in the EXCO solution, and its corrosion properties during different immersion time were measured repetitively using electrochemical impedance spectroscopy technique (EIS). The EIS data a were simulated using equivalent circuit with ZView program. The results show…
Metal imides (Li(2)NH, CaNH), a metal amide (LiNH(2)) and metal hydrides (LiH, CaH(2)) were synthesized by ball milling of their respective metal nitrides (Li(3)N, Ca(3)N(2)) in a H(2) atmosphere at 1 MPa and at room temperature.
A detailed study on N,N-dimethylanilino donor-substituted cyanoethynylethenes shows that there is no correlation between the effectiveness of the donor-acceptor conjugation pathway and the lowest-energy transition in the UV/Vis absorption spectrum.
Intercalation of phenol into an azobenzene–monmorillonite intercalation compound was successfully controlled by photoirradiation.
Nanotubules of polyaniline synthesized by template method on commercial carbon cloth have been used as the catalyst support for Pt particles for electro-oxidation of methanol. The ohmic and the charge transfer resistances of the nanotube-based electrode were considerably lower than the polyaniline electrode synthesize…
CpMo(CO)(3)Cl reacts with the hydroxyl (Si-OH or Si-OH-Al) functionalities of mesoporous molecular sieves such as MCM-41, MCM-48 and its aluminium analogues during grafting. XRD, N(2) adsorption-desorption, BET surface area analysis and TEM show the resulting samples as being well ordered and maintaining a uniform por…
Equal-Channel-Angular extrusion (ECAE) has been conducted at room temperature in order to develop an ultrafine-grained structure in a Zn-22 mass% Al eutectoid alloy. The microstructures had an equiaxed and homogeneously distributed Al-rich and Zn-rich duplex-phase and its average grain size was about 0.35 μm. This all…
Iron-chromium ferritic alloy is a candidate for the interconnect of solid oxide fuel cells (SOFCs). Gastightness is one of the most important properties of the interconnect in a planar-type SOFC. Hydrogen permeation in an iron-chromium alloy was measured in an atmosphere simulating an SOFC at 1073 K. Hydrogen permeabi…