Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of nickel/silica catalysts during impregnation and further thermal activation treatment leading to metal particlesCatherine Louis, Zheng Xing Cheng, and Michel CheCite this: J. Phys. Chem. 1993, 97, 21, 5703–5712Publication Date (Print):May 1, 1993Publicatio…
Results of dynamic simulations of bubbles rising through a liquid are presented. The Reynolds number of the flow based on the radius and the terminal speed of bubbles is large compared to unity, and the Weber number, which is the ratio of inertial to surface tension forces, is small. It is assumed that the bubbles do…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction energies for blends of poly(methyl methacrylate), polystyrene, and poly(.alpha.-methylstyrene) by the critical molecular weight methodT. A. Callaghan and D. R. PaulCite this: Macromolecules 1993, 26, 10, 2439–2450Publication Date (Print):May 1, 1993Publication Hi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrdered structure in blends of block copolymers. 1. Miscibility criterion for lamellar block copolymersTakeji Hashimoto, Komei Yamasaki, Satoshi Koizumi, and Hirokazu HasegawaCite this: Macromolecules 1993, 26, 11, 2895–2904Publication Date (Print):May 1, 1993Publication His…
The photophysical properties of 7-amimocoumarin derivatives with different alkylation degrees are studied in water and in different monoalcohols.Specific hydrogen bonds between the solute and protic solvents are considered to explain spectral shifts and internal conversion process.The mechanism for the internal conver…
A series of Ni(II) tetraphenylporphyrins with varying β substituents was examined by X-ray crystallography and EXAFS to assess peripheral steric effects on the conformations of the macrocycles. The compounds are the low-spin Ni(II) derivatives of 2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrin (1), 2,3,7…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew intercalation compounds of conjugated polymers. Encapsulation of polyaniline in molybdenum disulfideMercouri G. Kanatzidis, Rabin Bissessur, D. C. DeGroot, J. L. Schindler, and C. R. KannewurfCite this: Chem. Mater. 1993, 5, 5, 595–596Publication Date (Print):May 1, 1993…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and properties of fluorinated polyimides from novel 2,2'-bis(fluoroalkoxy)benzidinesAndrew E. Feiring, Brian C. Auman, and Edward R. WonchobaCite this: Macromolecules 1993, 26, 11, 2779–2784Publication Date (Print):May 1, 1993Publication History Published online1 M…
1. Introduction.- 2. Carbon Materials: Graphite, Diamond and Others.- 2.1 Structure and Materials.- 2.1.1 Graphite.- 2.1.2 Graphite-Related Materials.- 2.1.3 Carbon Fibers.- 2.1.4 Glassy Carbon.- 2.1.5 Graphite Intercalation Compounds.- 2.1.6 Diamond.- 2.1.7 CVD Diamond Films.- 2.1.8 Diamond-Like Carbon Films.- 2.2 Pr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and characterization of model 4-miktoarm star co- and quaterpolymersHermis Iatrou and Nikos HadjichristidisCite this: Macromolecules 1993, 26, 10, 2479–2484Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Published inissue 1 May 199…
The pressure dependence of the metal-to-insulator transition in NdNiO${}_{3}$ and PrNiO${}_{3}$ has been studied up to applied hydrostatic pressures of 16 kbar. In both cases the first-order metal-to-insulator phase transition is extremely sensitive to pressure, with 15.1 kbar suppressing the transition from 196 to 10…
The current interest in tough, high‐temperature materials has motivated fiber coating development for brittle‐matrix composites with brittle reinforcements. Such coatings are needed for controlled interface debonding and frictional sliding. The system investigated in this study was sapphire fiber‐reinforced alumina. T…
We have investigated the pressure dependence (up to 20 kbar) of the metal-insulator (MI) transition displayed by the orthorhombic perovskites R${\mathrm{NiO}}_{3}$ (R=Nd, Pr, and ${\mathrm{Nd}}_{0.7}$${\mathrm{La}}_{0.3}$) by means of electrical resistance measurements. The transition temperature decreases under press…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and phosphate ion-exchange properties of a hydrotalcite-like compoundAkira Ookubo, Kenta Ooi, and Hiromu HayashiCite this: Langmuir 1993, 9, 5, 1418–1422Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Published inissue 1 May 1993…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA quantitative diffuse reflectance spectroscopy study of supported chromium catalystsBert M. Weckhuysen, Leo M. De Ridder, and Robert A. SchoonheydtCite this: J. Phys. Chem. 1993, 97, 18, 4756–4763Publication Date (Print):May 1, 1993Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIon transport in polypyrrole and a polypyrrole/polyanion compositeXiaoming Ren and Peter G. PickupCite this: J. Phys. Chem. 1993, 97, 20, 5356–5362Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Published inissue 1 May 1993https://pubs.acs.o…
Inorganic–organic composite systems (e.g. see figure) with controlled electrical and optoelectronic properties are of current interest for applications including electrochromic displays, batteries, membranes, and sensors. The various methods of intercalation of the organic guests into the inorganic hosts, and the prop…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvatochromism as a probe of the microenvironment in dendritic polyethers: transition from an extended to a globular structureCraig J. Hawker, Karen L. Wooley, and Jean M. J. FrechetCite this: J. Am. Chem. Soc. 1993, 115, 10, 4375–4376Publication Date (Print):May 1, 1993Pub…
Abstract Molecular information expressed through molecular recognition events provides means for directing the spontaneous formation of supramolecular species from complementary components. It may allow the design and engineering of supramolecular materials, in particular of liquid crystalline and of polymeric nature.…
Macromolecules