Materials Literature
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The introduction of CF(3) reporter groups close to the paramagnetic centre in macrocyclic lanthanide(iii) complexes allows faster acquisition of (19)F magnetic resonance data, and amplifies chemical shift non-equivalence, as exemplified by the definition of ratiometric chemical shift probes for pH and, in principle, e…
Chemical conversions within the cages of doped sol-gel porous oxides take place with unique advantages over reactions in solution as the glassy matrix has tremendous effects on the reactivity of the entrapped molecules. The chemical properties of sol-gel materials can be tailored in an immense range of values and chem…
The first use of diatom frustules as shape-dictating 3-D templates for the syntheses of nanostructured, nanocrystalline micro-particles of a non-oxide ceramic, boron nitride, is demonstrated.
A Gd(III) complex bearing pendant acetoxymethyl esters is activated on exposure to porcine liver esterase; the 84% increase in relaxivity is a result of suppression of HCO(3)(-)/CO(3)(2-) binding by the resulting negative charge.
Hybrid poplar (Populus nigra x P. maximowiczii) chips were pretreated using an organosolv ethanol process. The effect of pretreatment conditions (temperature, time, catalyst, and ethanol concentration) on the substrate characteristics, including fiber size, crystallinity, and degree of polymerization of cellulose, was…
The kinetics of the A1 to L10 transformation are given in the form of time-temperature-transformation diagrams. These diagrams are calculated using experimentally measured data for 1μm thick FePt and FeCuPt thin films and three variations of the Johnson-Mehl-Avrami-Kolmogorov kinetic theory. For the FePt alloys, an in…
The new redox-fluorescence dependent molecules MTs were synthesized with tetrathiafulvalene (TTF) and 5-methoxy-2-pyridylthiazoles coupled directly and rigidly. The fluorescent emission of MTs can be reversibly switched on/off depending on the oxidation states of the TTF unit, due to the peculiar property of TTF being…
We have revealed that Sr Ca Mg Si 2 O 7 : Eu phosphors emit blue-greenish light under the application of a mechanical stress, called mechanoluminescence (ML). The ML showed a similar spectrum to photoluminescence (PL), which indicated that ML is emitted from the same center of Eu 2 + ions as PL. Such a blue-greenish l…
Preface. Foreword by Robert W. Cahn. Motto. List of Contributors. 1 Introduction (Wolfgang Pfeiler). 1.1 The Importance of Alloys at the Beginning of the Third Millennium. 1.2 Historical Development. 1.3 Atom Kinetics. 1.4 The Structure of this Book. References. 2 Crystal Structure and Chemical Bonding (Yuri Grin, Ulr…
Epitaxial La0.7Ca0.3MnO3 (LCMO) films of 15–150nm thick have been grown on SrTiO3(001) [STO(001)] and (LaAlO3)0.3(Sr2AlTaO6)0.7(001) [LSAT(001)] substrates with lattice mismatches of 1.11% and 0.15%, respectively. Asymmetric x-ray reciprocal space mapping was used to determine the strain state evolution in the films.…
The inhibitory effect of diethanolamine (DEA) on corrosion of mild steel in 0.5 M H 2 SO 4 was investigated by various corrosion monitoring techniques. Galvanostatic polarization study revealed that this compound is a very good inhibitor. The inhibition efficiency (I%) varies in the range of 88.7% to 55.3 % for a conc…
The synthesis and photochemical characterization of bicomponent molecular switches based on covalently tethered dithienylethene photochromes is described. Both photochromic units undergo complete switching between the fully cyclised and fully non-cyclised states despite a significant level of electronic communication…
The corrosion behaviors of Ti and Ti-6Al-4V, Ti-6Al-7Nb, Ti-0.5Pt, Ti-6Al-4V-0.5Pt, and Ti-6Al-7Nb-0.5Pt alloys were examined using an electrochemical analyzer in artificial saliva containing 0.1 and 0.2% NaF at a pH of 4.0. The SEM observations revealed that the surfaces of the alloys containing 0.5 wt% Pt were not a…
We report the dimerization of a mono-ruthenium(III) substituted alpha-Keggin-type tungstosilicate [alpha-SiW(11)O(39)Ru(III)(H2O)](5-) to a micro-oxo-bridged dimer [{alpha-SiW(11)O(39)Ru(m)}2O](n-) (m = III, n = 12; m = IV/III, n = 11; m = IV, n = 10). Single crystal X-ray structure analysis of Rb(10)[{alpha-SiW(11)O(…
A simple electrochemical method is presented to remove the bottom barrier layer of anodic aluminum oxide (AAO). In this method, an electrolysis process was performed in neutral solution with AAO as the cathode. By applying a suitable cathodic potential, electrolyte temperature, and electrolysis time, the bottom barrie…
Spinning disc processing (SDP) is an instantaneously scalable, continuous flow and high throughput flash nano-fabrication technology which embraces green chemistry metrics. It has been used to prepare silver nano-particles with remarkable control in size (5-200 nm), shape (spheroidal, acicular or agglomerate rosettes)…
The mechanism of lead-induced passivity-degradation in a nickel-based alloy (UNS N06690) was explored in a simulated stream generator alkaline crevice chemistry. The pitting induction test indicated that the detrimental impact of lead contamination on pitting resistance was significantly enhanced by the presence of ca…
The reactions of 2-pyridinealdoxime [(py)CHNOH] with Ni(ClO4)(2).6H2O in the presence of NaOH and NaN3 have led to Ni(II)14 and Ni(II)12Na2 clusters; the Ni14 compound is the biggest metal oxime cluster discovered to date, as well as the largest Ni azide cluster.
Deformation of AZ31 sheets during high-speed rolling at various temperatures was investigated. The thickness of 2.5 mm was reduced 60% by single-pass operation at a speed of 2000 m/min. Textures, microstructures, mechanical properties and bendability of the sheets processed were examined. In the sheets rolled at eleva…
The paper reports the synthesis and detailed characterization of two new Fe(II) compounds: [Fe(pyim)(2)(bpen)](ClO(4))(2).2C(2)H(5)OH (2) and [Fe(pyim)(2)(bpe)](ClO(4))(2).C(2)H(5)OH (3) (pyim = 2-(2-pyridyl)imidazole, bpen = 1,2-bis(4-pyridyl)ethane, and bpe = 1,2-bis(4-pyridyl)ethene). Both compounds and the earlier…