Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTReduced Excimer Formation in Polyfluorenes by Introducing Coil-like Poly[penta(ethylene glycol) methyl ether methacrylate] Block SegmentsYong Ku Kwon*, Hyun Seok Kim, Hyun Jung Kim, Ju Hyun Oh, Han Sun Park, Yoon Soo Ko, Kyu Bo Kim, and Min Sung KimView Author Information Depar…
The adsorption and reaction of ethanol and acetaldehyde on two-dimensional PdZn alloys on Pd(111) were studied with use of temperature-programmed desorption (TPD) and high-resolution electron energy loss spectroscopy (HREELS). Incorporation of Zn into the Pd(111) surface was found to decrease the dehydrogenation activ…
Comparative investigation of vibrational (IR and Raman) and NMR spectra of L-nitrohistidine monohydrate (L-NH·H 2 O) and L-histidine (L-His) has been performed with allowance for structural data. Nonlinear-optical activity and the range of transparency of L-NH·H 2 O are determined. Influence of nitrogroup on structura…
Abstract The graphite nanosheets/polyaniline (GN/PANI) nanorods composites were fabricated via ultrasonic polymerization of aniline monomer in the presence of GN, which was used as electric filling. The kind of doped acids, the concentration, and the contents of the GN were used as impact factors to the conductivity o…
Phosphonic acid functionalized periodic mesoporous organosilicas were synthesized by co-condensation of 1,2-bis(trimethoxysilyl)ethane and diethoxyphosphorylethyl-triethoxysilane in acidic medium using Brij-76 as a template. Structural characterizations showed that the mesoporous materials with 2-D hexagonal mesostruc…
Dissipative particle dynamics simulations were performed on phosphonic acid-functionalized copolymer melt. This copolymer consists of poly(ether−ether−ketone) and poly( p -vinylbenzylphosphonic acid) blocks. Three different mapping schemes were implemented to obtain the morphology in different length scales. The morph…
The paper presents results of investigation on physico-chemical (among others – mechanical) properties of epoxy coatings subjected to the ageing with ultraviolet radiation and such aggressive media as 20% aqueous solutions of: sodium chloride, potassium hydroxide and sulfuric acid (for 1080 h).
Using the real-space self-consistent field theory, we investigate the effects of geometry confinement and surface field on the morphologies of lamella-forming diblock copolymers confined in the periodic nanorod arrays. The array confinement provides a fractional confinement dimension where the diblock copolymers are i…
A series of new tetrathiafulvalene-substituted 3,5-dimethylpyrazole ligands, 4-[{2,6,7-tris(methylthio)-TTF-3-yl}thio]-3,5-dimethylpyrazole (MTSPz*, Pz* = 3,5-dimethylpyrazole, 4a ), 4-[{6,7-benzo-2-(methylthio)-TTF-3-yl}thio]-3,5-dimethylpyrazole (BTSPz*, 4b ), 4-[{6,7-(ethylenedithio)-2-(methylthio)-TTF-3-yl}thio]-3…
Gypsum needle crystallization from a suspension of calcium sulfate hemihydrate grains in an aqueous solution is studied on a mesoscopic scale. We build a simulation model, which assumes that gypsum formation is limited by heterogeneous nucleation and precipitation with an initial autocatalytic surface-controlled needl…
Urchin-like VO(2)(B) nanostructures composed of radially aligned nanobelts have been synthesized by the homogeneous reduction reaction between peroxovanadic acid and oxalic acid under hydrothermal conditions. The influences of synthetic parameters, such as reaction times and the concentration of oxalic acid, on the mo…
Retinoblastoma (RB), a carcinoma of the retina, is caused by mutations in the long arm of chromosome 13, band 13q14. The esterase D (ESD) gene maps at a similar location as the RB gene locus and therefore serves as a potential marker for the prognosis of retinoblastoma. Because very little is known about the structure…
We identify a link between the glass transition and percolation of regions of mobility in configuration space. We find that many hallmarks of glassy dynamics, for example, stretched-exponential response functions and a diverging structural relaxation time, are consequences of the critical properties of mean-field perc…
Electroless polymerization of aniline on platinum is investigated for polyaniline micro- and nanostructuring into practical electronic devices. This type of reaction is adapted to estimate its usefulness in a lithographic process. For practical electronic device fabrication, electroless polymerization of aniline can b…
The effect of iodide ions on the corrosion inhibition of aluminium in 2M HCl in the presence of polyvinylpy- rollidone (PVP) was studied using gasometric (hydrogen evolution) technique at 30-60 o C. Results obtained showed that PVP effectively reduces the corrosion rates of aluminium in the acid medium. Inhibition eff…
In this work we synthesized two inverse kinds of cobalt and zinc oxide nanocomposites (CoO/ZnO and Zn 1− x Co x O/Co 1− y Zn y O) and compared methodologistic features observed from the syntheses. The binary oxide system chosen herein is because divalent cobalt and zinc have very similar ion radii, and they interdiffu…
Optical gain and stimulated emission processes in Si nanostructures are controlled by the dynamics of high-density carriers. Here, we report photoluminescence (PL) dynamics and multiexciton recombination in ${\text{Si}}_{1\ensuremath{-}x}{\text{Ge}}_{x}/\text{Si}$ superlattices (SLs) under high-density excitation. Sat…
DMF-appended cyclometalated platinum(II) and -(IV) porphyrins were synthesized via the double cleavage of sp(2) C-H and sp(3) C-H bonds on one platinum center.
The evolution from nanostripes to monodomains is explored in ferroelectric ${\text{BaTiO}}_{3}/{\text{SrTiO}}_{3}$ (BT/ST) superlattices under dc and ac electric fields via the use of a first-principles-based technique. Such evolution involves original states that result in the decoupling of (static and dynamical) pro…
In this paper there is presented the structure and proprieties of the modeling cast magnesium alloys as cast state and after heat treatment, depending on the cooling medium (furnace, water, air), with different chemical composition. The improvement of the manufacturing technique and chemical composition as well as of…