Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAxial Ligand Orientation in Iron(III) Porphyrinates: Effect of Axial .pi.-Acceptors. Characterization of the Low-Spin Complex [Fe(TPP)(4-CNPy)2]ClO4Martin K. Safo, F. Ann Walker, Arnold M. Raitsimring, W. Patrick Walters, Daniel P. Dolata, Peter G. Debrunner, and W. Robert S…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotosensitization of Quantum-Size TiO2 Particles in Water-in-Oil MicroemulsionsErnesto Joselevich and Itamar WillnerCite this: J. Phys. Chem. 1994, 98, 31, 7628–7635Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 Augu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of Water-Soluble Self-Acid-Doped PolyanilineShow-An Chen and Gue-Wuu HwangCite this: J. Am. Chem. Soc. 1994, 116, 17, 7939–7940Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://pubs.acs.org/d…
The dispersion relation of photons transmitting through a photonic one-dimensional quasicrystal arranged in a Fibonacci sequence was observed by measuring the spectrum of the phase change of the transmitted light using a Michelson-type interferometer. The phase spectrum obtained clearly showed the self-similar structu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical Preparation and Analytical Applications of Ultrathin Overoxidized Polypyrrole FilmsChenChan. Hsueh and Anna. Brajter-TothCite this: Anal. Chem. 1994, 66, 15, 2458–2464Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Publish…
The in-plane thermal conductivity ${\mathrm{\ensuremath{\kappa}}}_{\mathrm{\ensuremath{\parallel}}}$ has been measured over the temperature range 5--400 K for samples of chemical-vapor-deposited (CVD) diamond made by both the microwave and hot-filament processes. The samples span a range of defect level, grain size, a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-Crystal X-ray Structure and Magnetic Properties of the Polyoxotungstate Complexes Na16[M4(H2O)2(P2W15O56)2].cntdot.nH2O (M = MnII, n = 53; M = NiII, n = 52): An Antiferromagnetic MnII Tetramer and a Ferromagnetic NiII TetramerC. J. Gomez-Garcia, J. J. Borras-Almenar,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGuanidinium Para-Substituted Benzenesulfonates: Competitive Hydrogen Bonding in Layered Structures and the Design of Nonlinear Optical MaterialsVictoria A. Russell, Margaret C. Etter, and Michael D. WardCite this: Chem. Mater. 1994, 6, 8, 1206–1217Publication Date (Print):Au…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyaniline Wires in Oxidant-Containing Mesoporous Channel HostsChun-Guey Wu and Thomas BeinCite this: Chem. Mater. 1994, 6, 8, 1109–1112Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://pubs.acs.org/d…
A series of four polycarbonates derived from the ethyl, butyl, hexyl, and octyl esters of desaminotyrosyl-tyrosine was prepared by condensation polymerization. The resulting polymers had weight average molecular weights ranging from 120,000-450,000, and their chemical structure was confirmed by elemental analysis, nuc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Dissolved Gas and Salt on the Hydrophobic Force between Polypropylene SurfacesLaurence Meagher and Vincent S. J. CraigCite this: Langmuir 1994, 10, 8, 2736–2742Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1…
The behavior of electromigration-induced voids in narrow, unpassivated aluminum interconnects is examined, using scanning electron microscopy. Some electromigration tests were interrupted several times in order to observe void nucleation, void growth, and finally the failure of the conductor line. It is found that voi…
Time-resolved and steady-state optical data are presented for a series of substituted free-base porphyrins. The porphyrins are grouped into "normal" and "perturbed" categories based on observed photophysical behavior, and the distinctions between the two classes correlate well with the conformations of the molecules.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTert-Butylaluminum Hydroxides and Oxides: Structural Relationship between Alkylalumoxanes and Alumina GelsC. Jeff Harlan, Mark R. Mason, and Andrew R. BarronCite this: Organometallics 1994, 13, 8, 2957–2969Publication Date (Print):August 1, 1994Publication History Published…
Polyhydroxyalkanoate (PHA) synthase has been expressed in Escherichia coli by reengineering the 5'-end of the wild-type (wt) gene and subsequent transformation of this gene into protease-deficient E. coli UT5600 (ompT-). Induction with IPTG results in soluble PHA synthase, which is approximately 5% of the total protei…
Chitin is one of the most abundant polysaccharides found in nature. It is often considered a cellulose derivative although it does not occur in organisms producing cellulose. Cellulose consists of β-(1→4)-D-glucopyranose units. In contrast, chitin has the same backbone but the 2-hydroxy has been replaced by an acetami…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly Enantioselective, Catalytic Epoxidation of Trisubstituted OlefinsBridget D. Brandes and Eric N. JacobsenCite this: J. Org. Chem. 1994, 59, 16, 4378–4380Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994…
Shake-and-bake is a direct-methods phasing algorithm for structure determination based on the minimal principle. SnB is a program based on shake-and-bake that has been used successfully to solve more than a dozen structures in a variety of space groups. The focus of this paper is on the details of this program, includ…
${\mathrm{LaCoO}}_{3}$ exhibits two magnetic-electronic transitions, one near 90 K and a second near 500 K. A previous study of the paramagnetic scattering using polarized neutrons demonstrated that the low-temperature transition is associated with the thermal excitation of ${\mathrm{Co}}^{3+}$ ions from the low-spin…
A reduced variable conformational sampling strategy for macromolecules based on molecular dynamics in torsion angle space is evaluated using crystallographic refinement as a prototypical search problem. Bae and Haug's algorithm for constrained dynamics [Bae, D.S., Haug, E.J. A recursive formulation for constrained mec…