Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCooperative relaxations in condensed macromolecular systems. 2. Computer simulation of self-diffusion of linear chainsT. Pakula and S. GeylerCite this: Macromolecules 1987, 20, 11, 2909–2914Publication Date (Print):November 1, 1987Publication History Published online1 May 20…
The electrochemical response of Al alloys containing various concentrations of Mo in solid solution was studied using potentiodynamic polarization. The evolution of the chemical composition of the passive film during exposure to deaerated was analyzed using x‐ray photoelectron spectroscopy. Exposure of Al‐Mo alloys to…
It is shown that the penetration plots of the grain-boundary diffusion of 65Zn in polycrystalline Al samples are curved at fixed temperatures and that this upward curvature changes with the annealing time. The penetration profiles can be interpreted in terms of sub-boundary diffusion characterized by the parameter P 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structures and magnetic behavior of pyridinium bis(oxalato)cuprate(II)-oxalic acid and bis(2-methylimidazole)copper(II) oxalateU. Geiser, B. L. Ramakrishna, R. D. Willett, F. B. Hulsbergen, and J. ReedijkCite this: Inorg. Chem. 1987, 26, 22, 3750–3756Publication Date…
The stability constants of 1:l "supercomplexes" formed between the three large, variously protonated, polyazacycloalkanes \n1,4,7,10,13,16,19,22,25-nonaazacycloheptacosan(eL I), 1,4,7,10,13,16,19,22,25,28-decaazacyclotriacontan(eL Z), and \n1,4,7,10,13,16,19,22,25,28,31-undecaazacyclotritriacontane(L 3) and th…
The spontaneous ferroelectric polarization in the chiral smectic-C phase can be measured by monitoring the dynamic response to a changing electric field. A model for the system is presented and analyzed for the two cases of square-wave and sinusoidal voltage applied to a ``bookshelf geometry'' sample, where the smecti…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of solvent casting on evolution of phase morphology of PC/PMMA blendsJeanne M. Saldanha and Thein KyuCite this: Macromolecules 1987, 20, 11, 2840–2847Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November…
Binary mixtures of spheres were used to prepare a variety of two‐dimensional structures ranging from ordered to disordered. The extent of particle order was influenced by the size ratio and the concentration of the bimodal constituents. If either the sizes or the concentrations were very different, the structures beca…
The density functional theory of freezing is used to study the liquid to crystal phase transition in the hardsphere and Lennard-Jones systems. An important step in the calculation is the parametrization of the solid phase average single particle density ρ(r). In this work two popular parametrizations are compared. The…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of spin-state interconversion in ferrous spin-crossover complexes: direct evidence for quantum mechanical tunnelingChuan Liang Xie and David N. HendricksonCite this: J. Am. Chem. Soc. 1987, 109, 23, 6981–6988Publication Date (Print):November 1, 1987Publication Hist…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of aromatic poly(ether ketones)Mitsuru Ueda and Masaki SatoCite this: Macromolecules 1987, 20, 11, 2675–2678Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://pubs.acs.org/doi/10.1021/ma00…
A series of PEO/PLA copolymers, covering a wide range of compositions and segmental lengths, was synthesized, and their morphology was investigated by means of DSC and IR studies. For matrices comprising PEO chains with molecular weights below 3400, no soft-segment crystallinity was detected. When long hard segments w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of an oxoruthenium(IV) porphyrin complexJohn T. Groves and Kwang Hyun AhnCite this: Inorg. Chem. 1987, 26, 23, 3831–3833Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://pubs.acs.o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteractions of diatomic molecules with graphiteMary J. Bojan and William A. SteeleCite this: Langmuir 1987, 3, 6, 1123–1127Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://pubs.acs.org/doi/10.102…
We have measured the photoelectron spectrum of Si−2 and find that the molecular electron affinity is EA(Si2)=2.199±0.012 eV. This spectrum apparently involves multiple electronic states of the Si−2 ion as well as several electronic states of the final neutral, Si2. In order to unravel our experimental findings, we hav…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structures of bis(5,6-dihydro-1,4-dithiin-2,3-dithiolato)gold and tetrabutylammonium bis(5,6-dihydro-1,4-dithiin-2,3-dithiolato)nickelate(1-) and the ligandlike character of the isoelectronic radicals [Au(DDDT)2]0 and [Ni(DDDT)2]-Arthur J. Schultz, Hau H. Wang, Lynda…
The second-harmonic generation efficiencies of a large number of aromatic organic compounds are presented. The second-harmonic data from a series of benzophenone and pyridine derivatives are discussed in detail. Specifically, 4-aminobenzophenone and 4-benzoylpyridine are shown to be of potential interest as frequency…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of paramagnetic and diamagnetic transition-metal monosubstitutions on tungsten-183 and phosphorus-31 NMR spectra for Keggin and Wells-Dawson heteropolytungstate derivatives. Correlations and corrections. Tungsten-183 NMR two-dimensional INADEQUATE studies of .alpha.-…
High-resolution vibrational electron-energy-loss spectra of amorphous ice films condensed at 14 K are reported for the incident-energy range 1--18 eV. Absolute electron scattering cross sections for elastic collisions, individual vibrational excitations, and the sum of electronic transitions are obtained by performing…
The retarded modes of a superlattice comprising alternating layers of two magnetic media characterized by a gyrotropic permeability tensor are investigated. The transfer matrix and dispersion relation are given in general form; a number of previous results are included as special cases. An effective-medium description…