Materials Literature
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We examined the effect of binding of rose bengal (RB) to alkylamide-terminated PAMAM G5 dendrimers on their temperature-sensitive properties. The cloud point of aqueous solutions of the isobutyramide-terminated dendrimer decreased with increasing amount of RB molecules bound to the dendrimer. The propylamide-terminate…
Enzyme catalysis reflects a dynamic interplay between charged and polar active site residues that facilitate function, stabilize transition states, and maintain overall protein stability. Previous studies show that substituting neutral for charged residues in the active site often significantly stabilizes a protein, s…
Abstract The study of the nonisothermal crystallization behavior of layered silicates micro‐ and nano‐biocomposites based on poly(butylene adipate‐ co ‐terephthalate) (PBAT), a biodegradable copolyester, has been carried out with different theoretical models. They were applied and developed with the aim to describe an…
Abstract X‐ray diffraction (XRD) techniques were used in the study of the effect of microwave (MW) heating on the structural properties of cotton celluloses I and II and on the mercerization mechanism of cotton fibers. Samples of celluloses I and II were MW heated at 900 W for different times ranging from 10 to 40 min…
Abstract Alumina fillers were incorporated in polystyrene (PS) in 4.5 wt % by melt blending with and without latex precompounding. Latex precompounding was used for the latex‐mediated predispersion of the alumina particles. The related masterbatch was produced by mixing PS latex with water dispersible boehmite alumina…
BACKGROUND: The YjgF/YER057c/UK114 family of proteins is widespread in nature, but has as yet no clearly defined biological role. Members of the family exist as homotrimers and are characterised by intersubunit clefts that are delineated by well-conserved residues; these sites are likely to be of functional significan…
Abstract Novel silane endcappers and novel polyurethanes end‐capped with trimethoxysilane (silylated polyurethanes) were developed as water‐curable materials in which the curing reaction occurred under humid conditions in the presence of dioctyltin diversatate as a curing catalyst. A variety of amine‐terminated trimet…
Abstract PCL/clay nanocomposites were prepared by microwave‐assisted in situ ROP of ε ‐caprolactone in the presence of either unmodified clay (Cloisite® Na + ) or clay modified by quaternary ammonium cations containing hydroxyl groups (Cloisite 30B). This PCL showed significantly improved monomer conversion and molecu…
Nano ZrO2/CoSb3 composites with different ZrO2 contents were prepared using hot pressing. The phase purity, the microstructure and the temperature-dependent transport parameters of the composites were investigated. The dimensionless figure of merit (ZT) of 0.18 of the non-dispersed CoSb3 preponderates the maximal valu…
Intense ultrashort light pulses interacting inside dielectrics can create nanoplasmas due to localized inhomogeneous nonlinear ionization. These nanoplasmas are bound inside the dielectric and are transient as their density changes during the light pulse—from underdense to quasi-metallic plasma densities. Interaction…
We present results from transient absorption spectroscopy on a series of artificial light-harvesting dyads made up of a zinc phthalocyanine (Pc) covalently linked to carotenoids with 9, 10, or 11 conjugated carbon-carbon double bonds, referred to as dyads 1, 2, and 3, respectively. We assessed the energy transfer and…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Redox reactions of ferricyanide ions, [Fe(CN)6]3-, in polysaccharide thin films that were prepared by layer-by-layer (LbL) deposition on the surface of a gold electrode were studied electrochemically by cyclic voltammetry. LbL films composed of alginic acid (AGA) and carboxymethylcellulose (CMC) were successfully prep…
Dispersions of single walled carbon nanotubes (SWNTs), with an effective aspect ratio of approximately 650 , in poly(ethylene oxide) (PEO) form fractal superstructures above their geometrical percolation and display rheological properties that follow time-temperature-composition-strain superpositioning. The concentrat…
Electrospinning has been used to prepare poly(vinyl alcohol) (PVA) nanofibres, with diameters ranging from 1 μm down to 20 nm, that contain dispersions of isolated, well-aligned, single-wall carbon nanotubes (SWNTs). The nanofibres were characterized by electron microscopy and Raman spectroscopy. Single Raman radial b…
Molecular dynamics simulations and grand canonical Monte Carlo simulations of water molecules in 1.04, 1.96, and 2.88 nm diameter silica pores (pores S, M, and L, respectively) were conducted at 300 K to reveal possible phase states of water in each pore and clarify the effect of pore diameter and hydration level on t…
We use molecular simulations to study the onset of crystallization in a liquid of Al, cooled at a temperature 20% below the melting point. We show that Al nucleates into a random packing of the hexagonal close-packed and the face-centered cubic phases. Body-centered cubic clusters, which usually form during the nuclea…
Abstract Hybrid organic/inorganic films have been prepared from an aqueous solution of polyvinyl alcohol (PVA) and silver nitrate (AgNO 3 ). The silver nanoparticles have been generated in the PVA matrix by thermal treatments. The structure and the morphology of the hybrid films have been studied as a function of the…
A first-principles computational method is used to investigate the microscopic properties of the $\mathrm{Ag}(111)∕\mathrm{Zn}\mathrm{O}(0001)$ interface that is often present in optical coatings designed for solar-control windows. The mechanical stability of the interface is important and therefore the ideal work of…
The effect of Co on the magnetic, structural and magnetocaloric properties of the LaFe11.7−xCoxSi1.3 (x = 0, 0.3, 0.4, 0.5, 0.6) and LaFe11.2−xCo0.7+xSi1.1 (x = 0, 0.1, 0.2) compounds was investigated by x-ray diffraction and magnetic measurements. For LaFe11.7−xCoxSi1.3 series, the Curie temperature TC increases with…