Materials Literature
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Four classic discrete Weakley-type sandwich germanotungstates, Na 11 H[Co 4 (H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·31H 2 O ( 1 ), [Co(phen) 3 ] 4 H 3 [Co 3 W(H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·4H 2 O ( 2 ), (C 6 N 2 H 18 ) 4 [Co(H 2 O) 6 ]H 2 [Co 4 (H 2 O) 2 (α-GeW 9 O 34 ) 2 ]·5.5H 2 O ( 3 ), Na(H 2 O) 2 (C 6 N 2 H 18 ) 4.75 H 1.5…
Derivatives of dipicolinic acid with a polyoxyethylene pendant arm at the pyridine 4-position have been functionalized for potential grafting with biological material. Four ligands with different terminal functions (alcohol, methoxy, phtalimide and amine) have been synthesized, which react with trivalent lanthanide io…
Several novel hierarchical ZnO nanostructures have been successfully prepared in mixed solvents of ethylene glycol (EG)−water via a facile microwave-assisted method. By only change of the heating parameters of the microwave oven, ZnO nanostructures with straw-bundle-like, wide chrysanthemum-like, and oat-arista-like m…
Two inorganic polyoxoanions react with carbon dioxide in aqueous solution to yield two polymeric chainlike complexes, where an activated CO2 molecule covalently bonds to polyoxoanions in a linear mu-eta1,eta1-OCO style. For the first time, the CO2 coordination is realized by an economic and environmentally friendly ap…
1,4-Diarylpentiptycenes (1a-e) were synthesized from 1,4-dichloro- or 1,4-difluoro-2,5-diarylbenzene derivatives by double base-promoted dehydrohalogenation to give corresponding arynes, which in the presence of anthracene undergo cycloaddition providing 1,4-diarylpentiptycenes in moderate overall yields. The resultin…
One-dimensional organic heterostructures consisting of contiguous lines of CF3- and OCH3-substituted styrene molecules on silicon are studied by scanning tunneling microscopy and ab initio simulation. Dipole fields of OCH3-styrene molecules are found to enhance conduction through molecules near OCH3-styrene/CF3-styren…
Single-crystal tetragonal α-MnO 2 nanotubes have been successfully synthesized by a facile hydrothermal treatment of KMnO 4 in the hydrochloric acid solution. The sample has been characterized by X-ray powder diffraction, field emission scanning electron microscopy, transmission electron microscopy, and orientation de…
Abstract This article covers the state‐of‐the‐art light stabilizer for rotational molding and the influence of synergistic effects between light and thermal stabilizers, which improve physical and mechanical properties. Different formulations of polyethylene (PE) with light stabilizer, thermal stabilizer, and acid sca…
We conduct a numerical study of the dynamical behavior of a system of three-dimensional "crosses," particles that consist of three mutually perpendicular line segments of length sigma rigidly joined at their midpoints. In an earlier study [W. van Ketel, Phys. Rev. Lett. 94, 135703 (2005)] we showed that this model has…
Abstract The aim of this study is to highlight the effect of the morphology of polylactic acid (PLA) thin films on the glass transition in this confined geometry. For that purpose, poly( L ‐lactic acid) and poly( D ‐lactic acid) polymer films were prepared on different surfaces such as mica and silicon surfaces by usi…
CeNbO 4 possesses oxygen hyper-stoichiometry at ambient and moderate temperature. At elevated temperature CeNbO 4+δ is thermally reduced to near stoichiometric CeNbO 4 accompanied by a structural phase transition. Above the phase transition temperature reoxidation of the material occurred in a pure oxygen atmosphere,…
Abstract Linear viscoelastic, steady shear behaviors, and morphologies of starch formate/poly(ε‐caprolactone) (PCL) blends, compatibilized by oligomers and obtained by reactive extrusion, have been investigated as a function of formic acid (FA)/starch ratio, nature, and molecular weight of the oligomer. The rheologica…
Abstract The crystal structure of anosovite, (Ti 1.69 Al 0.26 Fe 0.05 ) 3+ (Ti 0.97 Zr 0.03 ) 4+ O 5 , prepared by carbothermal reduction of leucoxene under vacuum at 1450°C has been refined by Rietveld method using powder X‐ray diffraction data. It was found that it represents slightly monoclinically deformed pseudob…
The demand for analysis of trace elements in atomically localized areas by electron energy-loss spectroscopy (EELS) in transmission electron microscopy is increasing. Unfortunately, the prolonged data acquisitions required to achieve an acceptable signal-to-noise ratio (SNR) tend to deteriorate the energy resolution b…
Abstract The sol–gel method of synthesis of the hybrid nanocomposite films of ZnO/(2‐hydroxypropyl) cellulose (HPC) on silica glass is presented. The sol phases were prepared for different weight ratios of zinc acetate dihydrate to HPC in the presence of triethylamine (TEA). Raman spectrum of the mixture of ZnAc and H…
Abstract We present first‐principles calculations on the (001) surfaces of cubic PbTiO 3 with PbO and TiO 2 terminations. The cleavage energy, surface energy, surface grand potential, surface relaxation and surface electronic structure have been investigated by using the projector‐augmented wave method under generaliz…
Abstract Polymer—clay nanocomposites were synthesized from aromatic polyamide and organoclay using the solution intercalation technique. Polyamide chains were produced through the reaction of 4,4′‐oxydianiline (ODA) and isophthaloyl chloride (IPC) in N , N ′‐dimethyl acetamide, using stoichiometry yielding chains with…
P-glycoprotein (ABCB1) is an ATP-binding cassette protein that is associated with the acquisition of multi-drug resistance in cancer and the failure of chemotherapy in humans. Structural insights into this protein are described using a combination of small angle X-ray scattering data and cryo-electron crystallography…
Abstract The synthesis, crystal structure and magnetochemical characterization of a new μ‐oxido trinuclear iron cluster (oldnomenclature: μ‐oxo trinuclear iron cluster), [Fe 3 (μ 3 ‐O)(μ 2 ‐CH 3 O) 2 (μ 2 ‐CH 3 COO) 2 (phen) 2 Cl 3 ], is reported. The reaction of hydrated FeCl 3 with sodium acetate and 1,10‐phenanthro…
Abstract The electrospinning of the polycarbonate (PC) solutions was performed for the variable electrospinning parameters such as polymer concentration, solvent composition, applied voltage, flow rate, and take‐up velocity in order to evaluate changes of morphology, mechanical properties, and flammability of the alig…