Materials Literature
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Superconductivity at ambient pressure with onset Tc= 4.00 ± 0.05 K is reported in a unique organic cation-radical salt κL-(ET)2Cu(CF3)4·TCE, [ET = bis(ethylenedithio)tetrathiafulvalene, TCE = 1,1,2-trichloroethane] with the Cu(CF3)4– species being the first Cu3+ and F containing organometallic anion in an organic supe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal degradation of microbial poly(4-hydroxybutyrate)Rosaria Abate, Alberto Ballistreri, Giorgio Montaudo, and Giuseppe ImpallomeniCite this: Macromolecules 1994, 27, 2, 332–336Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published…
Two lead tert-butoxide complexes (1)[Pb(Obut)2]m(m= 3 or 2 in the solid and gaseous phase, respectively) and (2) Pb4O(OBut)6 were used as precursors for atomic layer epitaxy (ALE) deposition of PbS thin films. The growth on soda lime glass, with and without an alumina coating, was studied by varying the source furnace…
The knitting of filamentary high-modulus yarns on V-bed and circular machines is reported in this paper. A theoretical study of the breaking of glass filaments during knitting is presented. The influence of yarn and knitting parameters on the knittability of high-modulus yarns is also discussed.
Both persulfate oxidative coupling and anodic oxidation of aniline in dialysed, aqueous poly(styrenesulfonic acid), PSSAH, yields a water-soluble PSSAH-doped polyaniline.
In the presence of reducing gases thin NiO films show reversible changes for visible–near-IR light absorption, a phenomenon which can be applied to the optical detection of CO in air. The deposition of highly dispersed Au on NiO films by a deposition–precipitation method significantly enhances the optical sensitivity…
Catalase activity of manganese porphyrin dimers linked by various spacer molecules reveals a remarkable relationship between Mn–Mn separation and arrangement; the highest turnover rate is observed when the two Mn ions can cooperatively interact with a H2O2 molecule in the catalyst cavity.
A modified method for the synthesis and separation of endo and exo guanosine 2',3'-cyclophosphorothioate (cGPS) has been developed. The exo diastereoisomer has been co-crystallized with RNase T1. cGPS is known to be a RNase T1 inhibitor but is also a very slow substrate. It was hydrolyzed during the crystallization, l…
We have been active in the synthesis and characterization of tin-based antitumour compounds for several years and we would like to summarize here the results that have already been patented(1) and that may therefore be disclosed(2). We synthesized some diorganotin 2,6-pyridinedicarboxylates.The dimethyltin compound ha…
Electron Energy Loss Spectroscopy, at Mn M2,3 and L2,3 edges is used in order to investigate the ionization state of manganese in a new oxybromide compound. The experimental procedure and the various approaches used to determine Mn oxidation state (edge energy shifts and L3/L2 ratios) are tested on a wellknown mangane…
cDNA clones coding cecropins A and B were isolated from a cDNA library constructed from the fat body of immunized Bombyx mori larvae. The cloned cDNAs had an open reading frame of 63 amino acids, indicating the primary translated peptides were processed to form mature cecropins of 35 amino acid residues. The homology…
We have built a new TEM heating stage permitting the in situ application of an electric field on sample surfaces and have performed experiments on ferroelectric domain switching in BaTiO3. The domain growth induced by the electric field first occurs by domain tip motion and then by the lateral shift of walls. A memory…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid-liquid equilibria for the oleic acid-.beta.-sitosterol-water system at elevated temperatures and pressuresJose A. Briones, Joseph C. Mullins, and Mark C. ThiesCite this: Ind. Eng. Chem. Res. 1994, 33, 1, 151–156Publication Date (Print):January 1, 1994Publication Histo…
Single crystals of the complex perovskite Pb(Fe2/3 W1/3)O3 [PFW], synthesized from high temperature solution growth, have been studied by optical and dielectric characterizations at zero field and under an electric bias field. It was found that at zero electric field the PFW crystals remain optically isotropic down to…
Considering the possibility of liquid crystalline (LC) polymers at first, they seem to be difficult to achieve, because polymer chains usually adopt a statistical coil conformation, whereas LC-phases possess an orientational and/or a positional long-range order. Nevertheless, polymer chains can be combined with liquid…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAmino acid complexes of palladium(II). 1. NMR study of the reactions of the diaqua(ethylenediamine)palladium(II) cation with ammonia, betaine, and the amino acids +NH3(CH2)nCO2- (n = 1-3)Trevor G. Appleton, Alicia J. Bailey, Danny R. Bedgood Jr., and John R. HallCite this: I…
Abstract Ge 1– x Si x crystals were grown with the Bridgman and the Czochralski method over a wide concentration range. With the Bridgman process single crystals up to 40 at.% Si were possible. The reasons for polycrystalline growth were the permanent contact of the interface with the crucible wall in combination with…
In connection with a study of the fiber reinforcement of wood, a number of silane coupling agents were evaluated in the bonding of basalt fibers to phenolic and isocyanate resins most commonly used in wood bonding. Interfacial shear strength improvement before and after 1 h boiling in water was determined, utilizing a…
Methods have been developed for covalently linking [Mn4O2(O2CPh)6(dbm)2]2(dbmH = dibenzoylmethane) units to give a dimer and a polymer; treatment of 2 with trans-1,2-bis(4-pyridyl)ethene (bpe) or 4,4′-bipyridine (4,4′-bpy) yields [Mn4O2(O2CPh)6(dbm)2(bpe)]24 and [Mn4O2(O2CPh)6(dbm)2(4,4′-bpy)]n5, respectively.
ADVERTISEMENT RETURN TO ISSUEArticleNEXTStructural Distortion of CH3I in an Ion-Dipole Precursor ComplexWei Ping Hu and Donald G. TruhlarCite this: J. Phys. Chem. 1994, 98, 4, 1049–1052Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs…