Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemically controlled ion permeability of liposomal membranes containing amphiphilic azobenzeneTomoo Sato, Masato Kijima, Yoshihiro Shiga, and Yoshiro YonezawaCite this: Langmuir 1991, 7, 10, 2330–2335Publication Date (Print):October 1, 1991Publication History Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPentacoordinate dihydridosilicates: synthesis, structure, and aspects of their reactivityRobert J. P. Corriu, Christian Guerin, Bernard J. L. Henner, and Qunjie WangCite this: Organometallics 1991, 10, 10, 3574–3581Publication Date (Print):October 1, 1991Publication History…
The current status of cobalt-59 NMR spectroscopy is reviewed including historical perspectives and application to various areas of coordination chemistry. Chemical shift data are summarized and tabulated for about 800 complexes from values in the literature and our experimental data. Spin-spin coupling constants are a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIncorporation of aluminum into silicate anions in aqueous and methanolic solutions of TMA silicatesR. F. Mortlock, A. T. Bell, and C. J. RadkeCite this: J. Phys. Chem. 1991, 95, 20, 7847–7851Publication Date (Print):October 1, 1991Publication History Published online1 May 20…
Abstract Permeation and separation characteristics for aqueous alcoholic solutions through a modified silicone rubber membrane containing poly(propylene glycol) in the polymer chain were studied by both pervaporation and evapomeation. Both the permeation rates in pervaporation and evapomeation increase, and the select…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSwitching the mechanism of spin-exchange coupling in (.mu.-oxo)bis(.mu.-carboxylato)divanadium(III) complexes by protonation of the oxo bridgePetra Knopp and Karl WieghardtCite this: Inorg. Chem. 1991, 30, 21, 4061–4066Publication Date (Print):October 1, 1991Publication Hist…
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A theory based on an energy method is proposed for the mechanics of a fiber mass under general deformation, including compression, extension, and shearing. The mass , is treated as a network composed of many fiber segments, each bounded by two neigh boring fiber contact points, and the individual mechanical behaviors…
We report a first-principles simulation study of phase transitions in ${\mathrm{KNO}}_{3}$, using our recently developed method for treating ionic molecular solids. With the interionic potentials calculated from ab initio electron charge densities of the ions, our structural static relaxation gave close fits to both t…
The genes encoding the enzymes of IMP biosynthesis in Bacillus subtilis constitute the pur operon, whereas the genes encoding GMP biosynthetic enzymes, guaA (GMP synthetase) and guaB (IMP dehydrogenase), and the purA gene encoding adenylosuccinate (sAMP) synthetase all occur as single units. The purB gene encodes an e…
High transparent and conductive CdO films were prepared using the activated reactive evaporation technique on Corning 7059 glass substrates. The film resistivity and transmittance were found to be influenced by the glow power of the discharge. Electron mobilities of 4-28 cm 2 V -1 s -1 and carrier density in the range…
Abstract Raman and Fourier-transformed infrared spectra of natural trioctahedral chlorites of polytype IIb were obtained for a series of samples characterized by distinct Fe/(Fe + Mg) and Si/Al ratios ranging, respectively, from 0.04 to 0.94 and from 5.18 to 1.86. All samples were characterized by X-ray powder diffrac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe first gold(III) macrocyclic polyamine complexes and application to selective gold(III) uptakeEiichi Kimura, Yasuhisa Kurogi, and Toshikazu TakahashiCite this: Inorg. Chem. 1991, 30, 22, 4117–4121Publication Date (Print):October 1, 1991Publication History Published online…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of environmental factors on the electrooptical properties of conjugated polymers containing oligo(oxyethylene) substituentsJean Roncali, Li Hong Shi, and Francis GarnierCite this: J. Phys. Chem. 1991, 95, 22, 8983–8989Publication Date (Print):October 1, 1991Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConformational characteristics of the polycarbonate of 4,4'-isopropylidenediphenolM. Hutnik, A. S. Argon, and U. W. SuterCite this: Macromolecules 1991, 24, 22, 5956–5961Publication Date (Print):October 1, 1991Publication History Published online1 May 2002Published inissue 1…
Experimental and theoretical cyclic voltammograms for electronically conducting polypyrrole film are obtained from the identical conditions and compared to each other to characterize electrochemical behavior of the polymer. A comparison of the simulated and experimental cyclic yoltammograms shows quantitative agreemen…
Ferroelectric liquid crystal displays offer an attractive matrix addressed alternative for complex displays. However, their potential can only be realised by using novel addressing schemes suitable for the fast responding, DC sensitive, ferroelectric electro-optic effect. Over a period of several years, a high perform…
Abstract The chemical composition and the thermal behavior of sodium and hydrogen octosilicate was studied by chemical and thermal analysis, infrared (IR), magic-angle-spinning nuclear magnetic resonance (MAS-NMR) spectroscopy, and X-ray diffractometry. Both compounds are layer silicates with basal spacings of 11.10 a…
Replacement of Asp20 in T4 lysozyme by Cys produces a variant with (1) nearly wild-type specific activity, (2) a newly acquired sensitivity to thiol-modifying reagents, and (3) a pH-activity profile that is very similar to that of the wild-type enzyme. These results indicate that the residue at position 20 has a signi…
Abstract The regeneration of activated carbon was studied using the wet air oxidation process in the temperature range of 150–240°C and oxygen partial pressure range of 0.2 to 1.0 MPa. Phenol was used as substrate. The overall mechanism of regeneration has been analysed and the different steps taking place during the…