Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelective telomerization of butadiene with various nucleophiles catalyzed by polymer-bound palladium(0) complexesKiyotomi Kaneda, Hiroo Kurosaki, Masami Terasawa, Toshinobu Imanaka, and Shiichiro TeranishiCite this: J. Org. Chem. 1981, 46, 11, 2356–2362Publication Date (Prin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe crystal and molecular structure of new tetravalent ruthenium porphyrin. .mu.-Oxo-bis[(octaethylporphinato)ruthenium(IV) hydroxide]Hideki Masuda, Tooru Taga, Kenji Osaki, Hiroshi Sugimoto, Masayasu Mori, and Hisanobu OgoshiCite this: J. Am. Chem. Soc. 1981, 103, 9, 2199–2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTImidazolate- and oxo-bridged metalloporphyrinsJohn T. Landrum, David Grimmett, Kenneth J. Haller, W. Robert Scheidt, and Christopher A. ReedCite this: J. Am. Chem. Soc. 1981, 103, 10, 2640–2650Publication Date (Print):May 1, 1981Publication History Published online1 May 2002…
We have carried out a high resolution X-ray study of the smectic phases of Butyloxybenzylidene Octylaniline. We find that the phase previously identified as Smectic-B in this material is crystalline with in-plane order extending over at least 1.4 μm. The in-plane Bragg peaks are accompanied by anomalously strong diffu…
The properties of plane waves are well known, and it is probably because they are that we often try to represent any unknown field as a combination of such waves. Is such a representation always efficient or even correct? We try to answer this question for a simple problem arising in the electromagnetic study of grati…
Ionic charge-transfer (CT) complexes were prepared by mixing neutral solutions of the potent electron acceptor TCNQF4 (7,7,8,8-tetracyano-2,3,5,6-tetrafluoroquinodimethane) with the strong donors M2P(5,10-dihydro-5,10-diemethylphenazine) and TMPD(N,N,N′,N′-tetramethyl-p-phenylenediamine). M2P–TCNQF4 [complex (1)] and…
The synthesis of three oligomeric derivatives of 4-isobutylphenyl-2-propionic acid (ibuprofen), namely, the monoester of tetraethylene glycol (I) and the diesters of poly(oxyethylene) samples having molecular weights of 1000 (+/- 50) and 2000 (+/- 150) (II and III), has been performed via the imidazolide method. The a…
A thermal shock test was designed which permits the thermal fracture resistance and the mechanical strength of brittle materials to be quantitatively correlated. Thermal shock results for two materials, A1 2 O 3 and SiC, were accurately predicted from biaxial strength measurements and a transient thermal stress analys…
An explanation is given for the apparent stability of a minor phase in a two‐phase system, such as a glass in a glass ceramic, even though normally the glass would be expected to dissolve completely into the crystalline phase. It is shown that the glass would be stable only if it is segregated to the triple‐junction n…
In order to examine the effect of external noise on the electrohydrodynamic instability, we have measured the wave number spectrum of the pattern of Williams domain in nematic liquid crystals MBBA in the presence of external noise superposed to the a c voltage. The threshold voltage for the onset of Williams domain is…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAspects of artificial photosynthesis. Photosensitized electron transfer across bilayers, charge separation, and hydrogen production in anionic surfactant vesiclesMohammad S. Tunuli and Janos H. FendlerCite this: J. Am. Chem. Soc. 1981, 103, 10, 2507–2513Publication Date (Pri…
A dense high‐alumina ceramic has been developed for the immobilization of Savannah River Plant nuclear waste. The ceramic, fabricated by reactive hot‐pressing, consists of four compatible crystalline phases, alumina, spinel, magnetoplumbite, and uraninite. The magnetoplumbite phase can incorporate the elements Cs, Sr,…
An irrigated rotation has supported high crop yields for 66 yr without the benefit of K fertilizer because of the relatively high total K status (14 392 ppm in the 0- to 15-cm layer and 11 183 ppm in the 15-to 30-cm layer) of the soil. This K status, under native conditions, was due to the nature of the parent materia…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the reaction between polyester acid and carbodiimide in dry polyester diols and in a polyester polyurethaneDaniel W. Brown, Robert E. Lowry, and Leslie E. SmithCite this: Macromolecules 1981, 14, 3, 659–663Publication Date (Print):May 1, 1981Publication History P…
The periodic stripe domains of magnetic material whose easy axis is perpendicular to the film thickness may have boundary layer behavior not only in the wall but also near the film surfaces. This behavior is especially pronounced when the material characteristic length is much less than the film thickness. By means of…
In many applications, it is necessary to have permanent magnets whose characteristics vary little around a temperature Tr. We have developed a calculation to describe the thermal variation of the magnetization of the rare earth (RE) in such magnets including the effects of crystalline field. The exchange field of coba…
Formulas associated with simple beam or plate theories are used extensively in structural design, to determine You's modulus, and to determine fracture strength of brittle nonmetallic materials. The question may arise as to whether the proper ratio of beam‐width‐to‐beam‐depth is such that the bent structural element c…
Abstract Results of 13 years of field research throughout Montana have demonstrated a relatively high rate of crop yield response to K fertilization when included in an N‐P‐K fertilizer program. Correlations between crop response to fertilizer K and ammonium acetate‐extractable K have been too low for this method to b…
Abstract When linoleic acid or its esters were heated in the presence of valine a number of interaction products were formed. The major product was 2‐pentylpyridine which is thought to be produced by the reaction of 2,4‐decadienal with ammonia. Also formed were two secondary amides, isobutyloctanamide and isobutyllino…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface analysis of Raney nickel alloysJoseph C. Klein and David M. HerculesCite this: Anal. Chem. 1981, 53, 6, 754–758Publication Date (Print):May 1, 1981Publication History Published online1 May 2002Published inissue 1 May 1981https://pubs.acs.org/doi/10.1021/ac00229a003ht…