Materials Literature
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Abstract Four new Cu II complexes of formulae [Cu 3 (SE) 2 (H 2 O) 2 Cl 3 ]Cl·6H 2 O ( 1 ), Cu 3 (SE) 2 (N 3 ) 4 (DMF) 2 ( 2 ) , Cu(SE)N 3 ·DMF ( 3 ) and Cu(SE)N 3 ·Cu(SE)N 3 ( 4 ) with tridentate Schiff‐base ligands SE − , derived from condensation of N , N ‐dimethylethylenediamine with salicylaldehyde, have been syn…
A solution surface-erosion route was successfully employed to produce one-dimensional (1D) ZnO nanostructures. ZnO nanorod arrays and three-dimensional urchin-like assemblies could be selectively obtained with different manipulations. In this process, zinc foil was introduced to an organic solution system and acted bo…
Abstract The addition of a small amount of a poor solvent impurity (methanol) to a theta solvent (cyclohexane) is found to cause appreciable swelling (≈30% increase of the average brush height) in a model end‐grafted polystyrene (PS) brush layer. This unusual type of swelling is not observed if octadecyltrichlorosilan…
[Co(III)Cp(2)](+)[Fe(III)I(4)](-) (Cp = cyclopentadienyl) prepared by the double oxidation of FeI(2) and CoCp(2) with iodine exhibits a 30 degrees C thermal hysteresis in magnetic susceptibility between 134 and 164 K that is attributed to a phase transition to a disordered triclinic unit cell from an ordered monoclini…
Abstract The photodegradation of poly(ether sulphone) (PES) was investigated systematically by time‐of‐flight SIMS (ToF‐SIMS) and x‐ray photoelectron spectroscopy (XPS). The effect of varying the irradiation dose, wavelength and the atmosphere was studied along with mechanistic photooxidation studies using 18 O 2 . Ph…
Coverage-dependent heats of adsorption and sticking probabilities for oxygen on Ni[211] have been measured at 300 K using single-crystal adsorption calorimetry. The data are consistent with a switch from dissociative chemisorption at low coverage to oxide formation above 2 ML adatom coverage. The initial heat of adsor…
Abstract An extensive study of the surface chemical changes to poly(ether sulphone) (PES) ultrafiltration membranes is made for the first time by the use of time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) after photoirradiation at 254 nm with irradiances varying from 10 to 300 mJ cm −2 in a nitrogen atmosphe…
Using the Glew−Hildebrand saturation technique, the solubilities of bis(2,2,6,6-tetramethyl-4-piperidinyl) maleate in hexane, heptane, octane, m -xylene, and tetrahydrofuran at temperatures from 253.15 K to 310.15 K were measured with the help of the classical equilibrium method. The experimental data were correlated…
Propagation of electromagnetic plane waves in some directions in gravitationally affected vacuum over limited ranges of spacetime can be such that the phase velocity vector casts a negative projection on the time-averaged Poynting vector. This conclusion suggests, inter alia , gravitationally assisted negative refract…
The thermoelectric power $S(T)$ and thermal conductivity $\ensuremath{\kappa}(T)$ were systematically studied for a series of ${\mathrm{Al}}_{82.6\ensuremath{-}x}{\mathrm{Re}}_{17.4}{\mathrm{Si}}_{x}$ $(7\ensuremath{\leqslant}x\ensuremath{\leqslant}12)$ $1∕1$-cubic approximants. We found that $S(T)$ of these approxima…
The Ru2+ complex [Ru(bpy)2(bpy-ph4-Si(CH3)3)]2+ can be electrostatically bound to the negatively charged channel entrances of dye-loaded zeolite L crystals where it acts as a functional stopcock molecule. Impressive electronic triplet-singlet excitation energy transfer from the Ru2+ complex to the acceptor dye oxazine…
We have investigated the charge ordering (CO) in magnetite below the Verwey transition. A new set of half-integer and mixed-integer superlattice reflections of the low-temperature phase have been studied by x-ray resonant scattering. None of these reflections show features characteristic of CO. We demonstrate the abse…
A new Brønsted acidic aluminosilicate, AlTUD-1, with ideal characteristics for catalyst immobilisation (mesoporous structure, high surface area, and high Al(tetrahedral)/Si ratio), was used successfully for the noncovalent anchoring of two well-established asymmetric hydrogenation catalysts: [Rh(I)(cod)[(R,R)-MeDuPHOS…
In a previous paper (Veesler, S.; Lafferrere, L.; Garcia, E.; Hoff, C. Org. Proc. Res. Dev. 2003, 7, 983), the impact of a liquid−liquid-phase separation (LLPS) or demixing on solution crystallization in quiescent medium of a pharmaceutical compound, C 35 H 41 Cl 2 N 3 O 2, in an ethanol/water mixture was presented. I…
A new method for the preparation of high molecular weight of Poly[3-hydroxypropionic acid] P[3-HP] by employing ring opening polymerization (ROP) of macrocyclic esters derived directly from 3-HP was discussed. Good control over the molecular weights of the P[3-HP] polymers was observed both from the pure trimer (n=3)…
The thermal post-buckling responses of shape memory alloy hybrid composite (SMAHC) shell panels are investigated using a finite element method formulated on the basis of the layerwise theory. The von Karman nonlinear displacement–strain relationships are applied to consider large deflections due to thermal loads. The…
Two types of shape memory polyurethanes (PUs) with various hard segment contents (hsc) were designed and synthesized based on the position of crosslinks, either in the soft segment or in the hard segment, and were tested for tensile cyclic loading behavior as well as mechanical and dynamic mechanical properties. It wa…
Abstract Fine magnetite nanoparticles, both electrostatically stabilized and nonstabilized, were synthesized in situ by precipitation of Fe(II) and Fe(III) salts in alkaline medium. Magnetic poly(glycidyl methacrylate) (PGMA) microspheres with core‐shell structure, where Fe 3 O 4 is the magnetic core and PGMA is the s…
A new type of one-dimensional cyanide-bridged Cu(II)--Mo(V) bimetallic assembly, [Cu(cyclam)](3)[Mo(CN)(8)](2)x5H(2)O (cyclam = 1,4,8,11-tetraazacyclotetradecane), was prepared by self-assembling Mo(CN)(8)(3)(-) and Cu(cyclam)(2+) ions in a 2:3 stoichiometric ratio. The overall molecular view is delineated as a novel…
Abstract A number of analytical methods and techniques (X‐ray diffraction, FT‐IR and electron paramagnetic resonance spectroscopy, ionic chromatography, scanning electron microscopy, etc.) have been used to study the mode and sites of incorporation of some common inorganic anions (SO 4 2− , NO 3 − and Cl − ) in the ca…