Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxamidato complexes. 2. Copper(II) and nickel(II) complexes with oxamide-N,N'-diacetic acid: solution study, synthesis, crystal structures, and magnetic propertiesFrancesc Lloret, Jorunn Sletten, Rafael Ruiz, Miguel Julve, Juan Faus, and Michel VerdaguerCite this: Inorg. Che…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA novel copper complex and CVD precursor: (.eta.2-butyne)copper(I) hexafluoroacetylacetonateThomas H. Baum and Carl E. LarsonCite this: Chem. Mater. 1992, 4, 2, 365–369Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 Mar…
Two recently published methods of blood-brain barrier permeability measurement using Gd-DTPA scanning are compared by authors representing each group. The physiological models are reconciled. Results from both groups agree. These show that the transfer constant (the permeability surface area product per unit volume of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCocrystallization and phase segregation of polyethylene blends. 2. Synchrotron-sourced x-ray scattering and small-angle light scattering study of the blends between the D and H speciesKohji Tashiro, Michael M. Satkowski, Richard S. Stein, Yingjie Li, Benjamin Chu, and Shaw L…
The structural instability driven by soft phason modes in icosahedral quasicrystals is investigated. It is found that, depending on the physical parameters, three distinct soft modes induce the structural instabilities associated with the symmetry changes, ${\mathit{I}}_{\mathit{h}}$\ensuremath{\rightarrow}${\mathit{D…
M.1 monoclonal antibody has previously been shown to passively transfer partial resistance to schistosome infection within mice and to recognize a 28-kDa antigen that has peptide sequence homology with triose-phosphate isomerase (TPI; D-glyceraldehyde-3-phosphate ketol-isomerase, EC 5.3.1.1). We have now isolated the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTObservation of "mesh" and "strut" structures in block copolymer/homopolymer mixturesTakeji Hashimoto, Satoshi Koizumi, Hirokazu Hasegawa, Tatsuo Izumitani, and Stephen T. HydeCite this: Macromolecules 1992, 25, 5, 1433–1439Publication Date (Print):March 1, 1992Publication Hi…
We have studied the surface chemistry of two lots of Biomer (BSP067 and BSUA001), a widely used commercial poly(ether urethane) (PEU). Although transmission infrared adsorption studies revealed no differences in the bulk chemistry of the two lots, the surface chemistry, as seen by x-ray photoelectron spectroscopy (XPS…
Self-consistent spin-polarized energy-band calculations have been performed for ${\mathrm{Mn}}_{2}$Sb for a ferrimagnetic (FI), ferromagnetic (F), and antiferromagnetic (AF) spin alignment. The calculated local moments on the two types of Mn atoms are in agreement with values obtained from neutron diffraction for FI $…
Abstract An experimental study of a semibatch reaction crystallization is presented. Dilute hydrochloric acid is fed to a stirred solution of sodium benzoate to crystallize benzoic acid. The weight mean size of the product crystals increases with increasing stirring rate, reaches a maximum, and then decreases again. L…
International audience
The proximity of two or more porphyrins has been shown to be crucial in numerous biological processes such as electron transfer or oxygen activation. We report the electrochemical and spectroscopic (UV-vis, EPR) behavior of two families of dimeric cofacial diporphyrins, either covalently linked by two amide bridges (F…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWeakly bound complexes of carbon monoxideCarol A. Parish, Joseph D. Augspurger, and Clifford E. DykstraCite this: J. Phys. Chem. 1992, 96, 5, 2069–2079Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCocrystallization and phase segregation of polyethylene blends. 1. Thermal and vibrational spectroscopic study by utilizing the deuteration techniqueKohji Tashiro, Richard S. Stein, and Shaw L. HsuCite this: Macromolecules 1992, 25, 6, 1801–1808Publication Date (Print):March…
Experimental studies conducted in conjunction with a numerical analysis of strain‐rate gradients have established the origin of the damage process that occurs upon the densification of powders containing nonsintering inclusions and reinforcements. The underlying phenomenon is the development of localized compressive s…
Abstract 13 C-NMR MAS solid-state spectroscopy and 1 H-NMR relaxation measurements have been applied for quantitative determination of crosslink density in sulfur-accelerated NR vulcanizates. It is shown that the 13 C-NMR method is able to distinguish between monosulfidic crosslinks and polysulfldic structures; theref…
Macromolecules
The order-to-disorder transition in a nearly symmetric diblock copolymer of polystyrene/poly(cis-1,4)isoprene (Mw = 15 700) was reproducibly observed in heating and cooling runs using small-angle scattering and rheological measurements. Small-angle x-ray scattering characterizes the ordered structure as consisting of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-temperature crystallization and morphology of poly(aryl ether ether ketone)Andrew J. Lovinger, Steven D. Hudson, and Don D. DavisCite this: Macromolecules 1992, 25, 6, 1752–1758Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFactors affecting photoinduced alignment regulation of cyclohexanecarboxylate-type nematic liquid crystals by azobenzene molecular filmsKoso Aoki, Takahiro Seki, Yasuzo Suzuki, Takashi Tamaki, Akira Hosoki, and Kunihiro IchimuraCite this: Langmuir 1992, 8, 3, 1007–1013Public…