Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermotropic liquid crystalline polymers with quasi-rigid chains. I. Cyclohexyl moietiesMaged A. OsmanCite this: Macromolecules 1986, 19, 7, 1824–1827Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pubs.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilicon-29 NMR observation of an unprecedented rearrangement in tetraaryldisilenesHoward B. Yokelson, Jim. Maxka, David A. Siegel, and Robert. WestCite this: J. Am. Chem. Soc. 1986, 108, 14, 4239–4241Publication Date (Print):July 1, 1986Publication History Published online1…
It is shown, that in uniaxial ferroelectrics the angular dependence of the static susceptibility for the order parameter fluctuation is very sensitive to the value and the anisotropy of the background dielectric susceptibility.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSERS and SEM of roughened silver electrode surfaces formed by controlled oxidation-reduction in aqueous chloride mediaDavid D. Tuschel, Jeanne E. Pemberton, and Joseph E. CookCite this: Langmuir 1986, 2, 4, 380–388Publication Date (Print):July 1, 1986Publication History Publ…
Abstract The thermal degradation of polystyrene in the absence of oxygen is examined, at temperatures above or below 300°C. The decrease in degree of polymerisation occurring either with negligible volatilisation at lower temperatures, or with evolution of low molecular weight products at higher temperatures, is simul…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectroreductive alkylation of iron porphyrins. Iron(III), iron(II) and iron(I) alkyl complexes from the reaction of doubly reduced iron(II) porphyrins with alkyl halidesDoris Lexa, Jean Michel Saveant, and Dan Li WangCite this: Organometallics 1986, 5, 7, 1428–1434Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDeviation from the ideal octahedral field vs. alkyl distortion in d0 metal-alkyl complexes: a MO studyA. Demolliens, Y. Jean, and O. EisensteinCite this: Organometallics 1986, 5, 7, 1457–1464Publication Date (Print):July 1, 1986Publication History Published online1 May 2002P…
In a series of studies on the effects of finishes on textile wetting, the capillary spreading of a liquid drop in fabric was investigated by a photographic technique as a function of time, drop volume, and surface tension/viscosity ratio. The area covered by the spreading liquid was found to be expressed by an exponen…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of bubble size distribution on the enrichment and collapse in foamsGanesan. Narsimhan and Eli. RuckensteinCite this: Langmuir 1986, 2, 4, 494–508Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pub…
Abstract Polyimides with aromatic links are synthesized usually in two steps, but a series of aromatic polyimides with large molecular weights sufficient to produce strong fibers were prepared in one step by the reaction of 3,3′, 4,4′‐biphenyltetracarboxylic dianhydride (BPDA) with various aromatic diamines. The one‐s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBis(nitroxyl) adducts of bis(hexafluoroacetylacetonato)manganese(II). Preparation, structures, and magnetic propertiesMichael H. Dickman, Leigh C. Porter, and Robert J. DoedensCite this: Inorg. Chem. 1986, 25, 15, 2595–2599Publication Date (Print):July 1, 1986Publication His…
Abstract Rare earth (RE) halides (fluorides, chlorides, bromides, and iodides) have been studied by X-ray photoelectron spectroscopy. The binding energies (BE’s) of the RE 3d and 4d peaks for the chlorides, bromides, and iodides are related to the atomic charge calculated on the basis of Pauling’s scale of electronega…
Abstract The polyimides based on 3,3′,4,4′‐biphenyltetracarboxylic dianhydride (BPDA) described in Part I of this series were dissolved in p ‐chlorophenol and spun into fibers using a coagulating bath of ethanol. The fibers as spun had in general low tenacities and low moduli, but a heat treatment at 300–500°C under t…
Abstract The application of UHV surface analytical methods to the study of electrodes and surface layers may be affected by changes introduced by contact with the laboratory atmosphere. Therefore, a specimen preparation and transfer in a closed system with its specifications is described. Three examples of its applica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpin states in iron(III) phthalocyanines studied by Moessbauer, magnetic susceptibility, and ESR measurementsBrendan J. Kennedy, Keith S. Murray, Peter R. Zwack, Heinrich Homborg, and Winfried KalzCite this: Inorg. Chem. 1986, 25, 15, 2539–2545Publication Date (Print):July 1…
Abstract Blends of isotactic polypropylene and polyethylene or polyamides often display highly unusual crystalline morphologies in which the chain axes of the helical and linear polymers are at large angles to each other. These crystalline morphologies are explained on the basis of a specific epitaxial relationship th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPronounced proton and phosphorus-31 NMR spectral changes on meso-tetrakis(N-methylpyridinium-4-yl)porphyrin binding to poly[d(G-C)].cntdot.poly[d(G-C)] and to three tetradecaoligodeoxyribonucleotides: evidence for symmetric, selective binding to 5'CG3' sequencesLuigi G. Marz…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVapor pressures of poly(dimethylsiloxane) oligomersOra L. FlaningamCite this: J. Chem. Eng. Data 1986, 31, 3, 266–272Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://doi.org/10.1021/je00045a002RIGHTS & PE…
The expansion factors for the mean-square end-to-end distance and radius of gyration are studied for the helical worm-like (HW) chain with the excluded-volume effects incorporated in the Yamakawa–Stockmayer scheme. In this scheme, approximate closed expressions for them are expressed in terms of the excluded-volume pa…
We review the crystallography, band structure, and optical, electrical, and magnetic properties of diluted magnetic semiconductors (DMS), with emphasis on ternary alloys of the type AII1−xMnxBVI (e.g., Hg1−xMnxTe). Considerable attention in the review is given to spectacular novel effects which arise from the selectiv…