A spectroscopic analysis of phase separation behavior of polyurethane in restricted geometry: chain rigidity effects
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Synthesis and Multistage Redox Properties of 9,10-Bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene Derivatives Functionalized with Ferrocenyl and Tetrathiafulvalenyl Units
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Multistage Redox Properties of 9,10-Bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene Derivatives Functionalized with Ferrocenyl and Tetrathiafulvalenyl UnitsGary J. Marshallsay and Martin R. BryceCite this: J. Org. Chem. 1994, 59, 22, 6847–6849Publication Date…
Effect of pH and phosphate ions on self‐association properties of the major cold‐shock protein from Bacillus subtilis
The intermolecular interactions of the major cold-shock protein from Bacillus subtilis (CspB) in solution in the presence of different salts, including phosphate, have been studied by means of scanning calorimetry and size-exclusion chromatography. Calorimetric results indicate that, in all cases, protein unfolding ca…
The 65-kDa protein derived from the internal translational initiation site of the clpA gene inhibits the ATP-dependent protease Ti in Escherichia coli.
The clpA gene that encodes the ATPase subunit of the ATP-dependent protease Ti (Clp) in Escherichia coli contains a putative internal translational initiation site. Here we show that mutagenesis of its 5'-end AUG codon resulted in an exclusive synthesis of the 65-kDa protein (ClpA65), while mutation at the internal 16…
Some Features of Alpha-Al<sub>2</sub>O<sub>3</sub> Dosimetric Thermoluminescent Crystals
The paper discusses the effect of the TL output decrease with a simultaneous growth of the peak emission intensity in dosimetric crystals of the anion defective a-Al2O3 at higher heating rates. This effect appeared to be directly related to the decrease of TL efficiency due to thermal quenching.
Corrosion of Nickel in Molten Carbonate
Cyclic voltammetry and polarization measurements on nickel under reducing gas atmospheres were performed to investigate the corrosion behavior of nickel as a base metal for molten carbonate fuel‐cell separator plate alloys. The anodic reactions observed are oxidation of hydrogen, oxidation of nickel to nickel oxide an…
Polymeric antiplasticization of polycarbonate with polycaprolactone
Abstract Physical blends of polycarbonate (PC) with polycarprolactone (PCL), containing 0 to 30% PCL were prepared by melt mixing. The compatible blends were studied using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), mechanical testing, rheological and density measurements. Yield strengt…
Copper(I) Iodide Coordination Polymer with Tetrakis(ethylthio)tetrathiafulvalene (TTC2-TTF) and the Iodine-Doped Compound
Abstract The title complex was synthesized by the reaction of copper(I) iodide and tetrakis(ethylthio)tetrathiafulvalene (TTC2-TTF) in acetonitrile under argon atmosphere. The new compound, [(CuI)2TTC2-TTF], crystallizes in the monoclinic system, space group P21/m with unit-cell dimensions a = 9.843(2), b = 12.946(2),…
Electropolymerization and characterization of terpyridinyl iron (II) and ruthenium (II) complexes
Abstract Electroactive 2,2′: 6,2″‐terpyridinyl ligands ( 3, 5, 6 ) and their iron(II) ( 7a–9a ) and ruthenium(II) complexes ( 7b–9b ) were synthesized. Bis[3‐(aminophenyl)‐2,2′ :6,2″‐terpyridinyl]metal(II) complexes ( 7a, 7b ) and bis[2‐(hydroxyphenyl)‐2,2′ :6,2″‐terpyridinyl]metal(II) complexes ( 8a, 8b ) were electr…
Conducting Polymers from Polybutadiene: Molecular Configuration Effects on the Iodine-Induced Conjugation Reactions
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConducting Polymers from Polybutadiene: Molecular Configuration Effects on the Iodine-Induced Conjugation ReactionsLiming Dai, Albert W. H. Mau, Hans J. Griesser, and David A. WinklerCite this: Macromolecules 1994, 27, 23, 6728–6735Publication Date (Print):November 1, 1994Pu…
Formation of a Flexible Graphite Film from Poly(acrylonitrile) Using a Layered Clay Film as Template
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of a Flexible Graphite Film from Poly(acrylonitrile) Using a Layered Clay Film as TemplateTakashi Kyotani, Toshiki Mori, and Akira TomitaCite this: Chem. Mater. 1994, 6, 11, 2138–2142Publication Date (Print):November 1, 1994Publication History Published online1 May…
Structural trends in amorphous carbon
Amorphous carbon (a-C) structures over a wide range of densities are generated using tight-binding molecular-dynamics simulations. The a-C networks obtained by quenching low-density liquids consist of mostly threefold coordinated atoms. These a-C structures correspond to those obtained experimentally by evaporation of…
Coherences in the decay of autoionizing states in photoionization. I. Exchange effect between photo- and Auger electrons
An interference effect on angular correlation patterns due to the exchange of Auger and photoelectrons of the same energy is discussed. The detection in coincidence of Auger and photoelectrons may reveal a striking angular correlation pattern when a synchrotron light source is tuned so that the Auger and photoelectron…
Magnetoelectric properties of some rare earth molybdates
We observed the spontaneous electric polarization reversal induced by the magnetic field of 100 kOe at 78 K in single crystal samples of orthorhombic β'-phases of Tb2(MoO4)3 and TbGd(MoO4)3. We explained this effect by magnetoelastic coupling between the magnetic and electric subsystems in a crystal. This explanation…
New Class of Amorphous and Icosahedral Phases in Zn–Mg–Rare-Earth Metal Alloys
A new class of amorphous and icosahedral phases has been obtained in rapidly solidified Zn-Mg-Rare-Earth Metal (RE) ternary alloys. The rapidly solidified alloy structure exhibits the amorphous phase when it contains the RE elements of La, Ce, Pr or Eu with large atomic size. On the other hand, it exhibits the icosahe…
Measurements of 3doccupancy from CuL2,3electron-energy-loss spectra of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu
We used electron-energy-loss spectrometry to measure the intensities of the Cu white lines found at the onsets of the ${\mathit{L}}_{2}$ and ${\mathit{L}}_{3}$ absorption edges of rapidly quenched CuZr, CuTi, CuPd, CuPt, and CuAu. Enhancements of the white lines in the alloys as compared to elemental Cu were correlate…
Photoinduced Reduction of Viologens on Size-Separated CdS Nanocrystals
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoinduced Reduction of Viologens on Size-Separated CdS NanocrystalsHajime Matsumoto, Hiroyuki Uchida, Takahiro Matsunaga, Koji Tanaka, Takao Sakata, Hirotaro Mori, and Hiroshi YoneyamaCite this: J. Phys. Chem. 1994, 98, 44, 11549–11556Publication Date (Print):November 1,…
Dielectric measurement of the model glass transition in orientationally disordered cyclo-octanol
Orientationally disordered crystals possess translational order while retaining rotational and conformational degrees of freedom. Because these materials exhibit a glasslike transition, they are of great theoretical and experimental interest as model systems for structural glasses. We present detailed measurements of…
Syntheses and Properties of Novel Dimeric Tetrathiafulvalenes Linked with an Ethenylene or Ethynylene Spacer
Abstract Conjugated dimeric TTFs linked with an ethenylene or ethynylene spacer were prepared as novel electron donors and preferentially formed 1:1 complexes with TCNQF4 and with DDQ, which were more conductive than those of monomeric TTFs.
CHEMISTRY AND SPECIATION OF SOIL WATER FROM SERPENTINITIC SOILS
This study focused on the chemistry of soil water samples (SWS) obtained by tension-free lysimetry from serpentinitic, i.e., Cr- and Ni-rich, Dystric Eutrochrepts. Soil water samples from undisturbed soil profiles had total elemental concentrations (μnmol/L) of O.1–3.2 Cr, O.2–3.1 Ni, 3–154 Fe, and 55–401 Mg; however,…