Materials Literature
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The amino acid sequence of the iron-sulfur-flavoprotein, trimethylamine dehydrogenase, isolated from the bacterium W3A1 has been deduced from the x-ray diffraction pattern obtained at 2.4-A resolution. This sequence has been compared to portions of the primary sequence derived by gas-phase sequencing of isolated pepti…
With a 90° twist between the two halves, dication 12+ is the first ethylene dication with the maximum distortion possible. The stabilization of the positive charge is achieved in the separate halves of the dication by delocalization over polymethine units. 12+, whose ClO salt melts at about 170°C with decomposition, i…
Reactions of hydrogen with 1,2-dichloroethane and trichloroethylene have been investigated over Rh/Si0 2 catalysts at 365-553K and 0.1 MPa. The major products of the reactions are HCl and C 2 H 6. The selectivity for C 2 H 6 increases with increasing temperature. C 2 HC 5 Cl is a minor product for the dichloroethane r…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlassy relaxation at polymer-solid interfacesArup K. Chakraborty and Paul M. AdrianiCite this: Macromolecules 1992, 25, 9, 2470–2473Publication Date (Print):April 27, 1992Publication History Published online1 May 2002Published inissue 27 April 1992https://doi.org/10.1021/ma0…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the mesomorphic form of poly(ethylene terephthalate)Finizia Auriemma, Paolo Corradini, Claudio De Rosa, Gaetano Guerra, Vittorio Petraccone, Riccardo Bianchi, and Gabriele Di DinoCite this: Macromolecules 1992, 25, 9, 2490–2497Publication Date (Print):April 27, 1992Public…
The optical and electrochemical properties of three cadmium benzenethiolate clusters, Cd(SPh)4 2-, Cd4(SPh)10 2-, and Cd10 $4(SPh)16 4-, are studied as function of the cluster size. The Cdn clusters (n = 1,4, 10) which may represent molecular models for the semiconductor CdS show structured absorption spectra that are…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemically reactive polymers. Synthesis, characterization, and photochemistry of a polyurea containing a Cp2Mo2(CO)6 molecule along the polymer backbone and of poly(ether urethane) copolymers with Cp2Mo2(CO)6 and Cp2Fe2(CO)4 molecules along the polymer backboneSteve C.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMesophase behavior in thermotropic polyethers based on the semi-flexible mesogen 1-(4-hydroxyphenyl)-2-(2-methyl-4-hydroxyphenyl)ethaneMichael A. Yandrasits, Stephen Z. D. Cheng, Anqiu Zhang, Jinlong Cheng, Bernhard Wunderlich, and Virgil PercecCite this: Macromolecules 1992…
The NAD(+)-dependent D-lactate dehydrogenase was purified to apparent homogeneity from Lactobacillus bulgaricus and its complete amino acid sequence determined. Two gaps in the polypeptide chain (10 residues) were filled by the deduced amino acid sequence of the polymerase chain reaction amplified D-lactate dehydrogen…
Strontium‐doped lanthanum manganite powders were prepared using a peroxide acetate salt based solution. The stable sol was peptized by reacting ammonium hydroxide with the precursor solution. The amorphous dried gel powders exhibit a high energy level, due to their high cations coordination and small particles, to dev…
Failure waves have been recently observed in glass plates and rods struck by high‐speed projectiles. These waves propagate into material that has been prestressed by a compressive shock. The wave propagation speed exceeds the maximum crack speed and is not constant. Behind the failure wave there is a total loss of ten…
Recent controversial issues in charge transport in molecular solids are discussed, with focus on the effects of static and dynamic disorder. The situation in ordered solids such as aromatic hydrocarbon crystals is reviewed with attention to the nature of charge carriers, and the theoretical development that led to the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of ultraviolet and electron bonding of perfluoropolyethersG. H. Vurens, C. S. Gudeman, L. J. Lin, and J. S. FosterCite this: Langmuir 1992, 8, 4, 1165–1169Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Published inissue 1 April…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison and analysis of intrinsic kinetics and effectiveness factors for the catalytic reduction of nitrogen oxide (NO) with ammonia in the presence of oxygenJohn MarangozisCite this: Ind. Eng. Chem. Res. 1992, 31, 4, 987–994Publication Date (Print):April 1, 1992Publicati…
An approach for analysing neutron and X-ray specular reflectivity data from stratified media having variation in the scattering-length density near the surface is described. The method has its origin in small-angle scattering and it is composed of two steps: (i) indirect Fourier transformation [Glatter (1977). J. Appl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntermediate liquid crystalline phases in the binary system C16TACl-H2O: an NMR and low-angle x-ray diffraction studyUlf Henriksson, Eunice S. Blackmore, Gordon J. T. Tiddy, and Olle SoedermanCite this: J. Phys. Chem. 1992, 96, 9, 3894–3902Publication Date (Print):April 1, 1…
The single-crystal X-ray diffractometer installed at the PWA Laboratory in Frascati is described. The Huber four-circle goniometer is controlled by an IBM-compatible personal computer by means of a plug-in board interface based on the LSI chip Am9513. The program CS running under MS-DOS performs a wide variety of oper…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization mechanism and physicochemical properties of electrochemically prepared polyindole tetrafluoroborateKyung Moon Choi, Chung Yub Kim, and Keu Hong KimCite this: J. Phys. Chem. 1992, 96, 9, 3782–3788Publication Date (Print):April 1, 1992Publication History Publish…
Variable light‐transmission electrochromic devices based on the complimentary mixture of polyaniline and ferric ferrcyanide (prussian blue) are presented. Various configurations for th devices are discussed and the factors which can be manipulated in order to increase the efficiency of the devices are considered.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe first nickel(II) alternating chain with two different end-to-end azido bridgesRamon Vicente, Albert Escuer, Joan Ribas, and Xavier SolansCite this: Inorg. Chem. 1992, 31, 9, 1726–1728Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Publ…