Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThin Palladium Membrane Formed in Support Pores by Metal-Organic Chemical Vapor Deposition Method and Application to Hydrogen SeparationShengchun Yan, Hideaki Maeda, Katsuki Kusakabe, and Shigeharu MorookaCite this: Ind. Eng. Chem. Res. 1994, 33, 3, 616–622Publication Date (…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT31P and 183W NMR Spectroscopic Evidence for Novel Peroxo Species in the "H3[PW12O40].cntdot.yH2O/H2O2" System. Synthesis and X-ray Structure of Tetrabutylammonium (.mu.-Hydrogen phosphato)bis(.mu.-peroxo)bis(oxoperoxotungstate) (2-): A Catalyst of Olefin Epoxidation in a Bip…
Abstract The water vapor permeability (WVP) of whey protein emulsion films was investigated. The exponential effect of relative humidity on the WVP of whey protein films was reduced through lipid incorporation. Film orientation had a significant effect on WVP due to emulsion separation during film formation. Heat dena…
It has been suggested that optimizing the first hyperpolarizability, β, of donor-acceptor compounds requires a specific donor-acceptor strength for a given conjugated bridge. For donor-acceptor polyenes, β can be maximized when an optimal degree of mixing between neutral and charge-separated canonical resonance forms…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLayered Materials by Molecular Design: Structural Enforcement by Hydrogen Bonding in Guanidinium Alkane- and ArenesulfonatesVictoria A. Russell, Margaret C. Etter, and Michael D. WardCite this: J. Am. Chem. Soc. 1994, 116, 5, 1941–1952Publication Date (Print):March 1, 1994Pu…
ABSTRACT Clay mineral crystallinity and crystallite (domain) size data determined by X‐ray diffraction (XRD) are methods extensively used in the characterization of very low‐grade metamorphic conditions. However, the lack of sufficient interlaboratory standardization has made comparisons between different research gro…
ABSTRACT Heat treatment, protein concentration, and pH effects on water vapor permeability (WVP) of plasticized whey protein films were examined. The best film formation conditions were neutral pH, aqueous 10% (w/w) protein solutions heated for 30 min at 90°. Isoelectric point adjustment of whey protein with calcium a…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConjugated Porphyrin LaddersHarry L. AndersonCite this: Inorg. Chem. 1994, 33, 5, 972–981Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/ic00083a022https://doi.org/10.1021/ic00…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemplate-Synthesized Nanoscopic Gold Particles: Optical Spectra and the Effects of Particle Size and ShapeColby A. Foss Jr., Gabor L. Hornyak, Jon A. Stockert, and Charles R. MartinCite this: J. Phys. Chem. 1994, 98, 11, 2963–2971Publication Date (Print):March 1, 1994Publica…
Corrosion protection of metals can be obtained by coating them with polyaniline dispersions, resulting in a signifiecant and reproducible shift of the corrosion potential. Scanning electron micrograph indicate that the passivation is a multistep process, beginning with an etching stage in wh8ch grain boundaries become…
Numerical micromagnetic calculations rigorously describe the correlation between the microstructure and the magnetic properties of nanocrystalline permanent magnets. In isotropic nanocrystalline permanent magnets exchange interactions override the anisotropy of the individual grains. Therefore the spontaneous magnetic…
We have used a first-principles ultra-soft-pseudopotential method in conjunction with an efficient preconditioned conjugate-gradient scheme to investigate the properties of a series of eight cubic perovskite compounds. The materials considered in this study are ${\mathrm{BaTiO}}_{3}$, ${\mathrm{SrTiO}}_{3}$, ${\mathrm…
A computer program, VOIDOO, is described which can be employed in the study of cavities such as they occur in macromolecular structures (in particular, in proteins). The program can be used to detect unknown cavities or to delineate known cavities, either of which may be connected to the outside of the molecule or mol…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantum-Sized PbS, CdS, Ag2S, Sb2S3, and Bi2S3 Particles as Sensitizers for Various Nanoporous Wide-Bandgap SemiconductorsR. VogelR. VogelMore by R. Vogel, P. HoyerP. HoyerMore by P. Hoyer, and H. WellerH. WellerMore by H. WellerCite this: J. Phys. Chem. 1994, 98, 12, 3183–3…
Abstract We report calculations of electron inelastic mean free paths (IMFPs) of 50–2000 eV electrons for a group of 14 organic compounds: 26‐ n ‐paraffin, adenine, β‐carotene, bovine plasma albumin, deoxyribonucleic acid, diphenylhexatriene, guanine, kapton, polyacetylene, poly(butene‐1‐sulfone), polyethylene, polyme…
Abstract The aqueous polymerization of pyrrole with varying FeCl 3 /Py mol ratio produces black insoluble powders. IR characterization reveals the shifting of the NH stretching band to higher frequency with increasing FeCl 3 amount in the feed composition due to lowering of intermolecular H‐bonding. SEM shows a spong…
The structure of the beta form of copper(I) iodide has been investigated. The hexagonal beta -CuI exists as a single phase between 647 K and 655 K and shows marked anisotropy in its thermal expansion within this small temperature range. The high quality of the diffraction data has allowed the corrected structure for b…
The review is devoted to theoretical and experimental problems in the study of liquid crystals by light scattering methods. Nematic, cholesteric, and smectic liquid crystals in the isotropic and ordered phases are considered. The possible types of fluctuations are discussed for each phase. In the isotropic phase, spec…
The spatial variation of the growth rate on mesa-etched GaAs (1̄1̄1̄)B substrates during molecular beam epitaxy of GaAs is measured from the period of the reflection high-energy electron diffraction (RHEED) intensity oscillation using in situ scanning microprobe RHEED. The surface diffusion length of Ga adatoms on the…