Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of poly(methacrylic acid-g-ethylene oxide) microspheresRashmi K. Drummond, John Klier, Jessica A. Alameda, and Nikolaos A. PeppasCite this: Macromolecules 1989, 22, 9, 3816–3818Publication Date (Print):September 1, 1989Publication History Published online1 May 20…
ADVERTISEMENT RETURN TO ISSUEPREVArticlePreparation and characterization of the monomeric copper(II) siloxide complex Cu[OSi(OCMe3)3]2(py)2Anne K. McMullen, T. Don Tilley, Arnold L. Rheingold, and Steven J. GeibCite this: Inorg. Chem. 1989, 28, 19, 3772–3774Publication Date (Print):September 1, 1989Publication History…
Although it is well established that small polarons are formed in transition metal oxide (TMO) glasses, no satisfactory quantitative analysis of d.c. and a.c. transport exists. The temperature dependences of the d.c. and a.c. conductivities for TMO glasses are re-examined. The charge transport cannot be explained quan…
Abstract Polypropylene, polystyrene, and polyethylene have been grafted with glycidyl acrylate and glycidyl methacrylate. After 5 min of grafting with UV irradiation, polystyrene was extensively grafted to 91% coverage of glycidyl acrylate according to ESCA, while polypropylene was grafted to only 50% coverage. With g…
Solar control characteristics of chemically deposited PbS and Cu x S thin films in the glass-PbS-Cu x S structure are reported. This combination offers pleasing colours: bluish, greenish, greenish-yellow etc in reflected daylight and low NIR transmittance-not possible with PbS-only coatings, while providing a high-eno…
Abstract The electronic band structure of CaS, SrS, and BaS is calculated by linear augmented plane waves (LAPW). The calculation is applied for the explanation of the optical properties of the alkalineearth‐metal sulphides.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability of aqueous foams: analysis using magnetic resonance imagingJ. Bruce German and Michael J. McCarthyCite this: J. Agric. Food Chem. 1989, 37, 5, 1321–1324Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 Septe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal structure of a unique aggregate containing lithium and potassium cations, ketone enolate, and tert-butoxidePaul G. Williard and Gloria J. MacEwanCite this: J. Am. Chem. Soc. 1989, 111, 19, 7671–7672Publication Date (Print):September 1, 1989Publication History Publish…
Un modele de reactions chimiques, durant la phase gazeuse, pour le silicium contenu dans les nuages interstellaires denses est developpe. Les abondances des molecules contenant du silicium sont determinees
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetection of alkylperoxo and ferryl, (FeIV:O)2+, intermediates during the reaction of tert-butyl hydroperoxide with iron porphyrins in toluene solutionRamesh D. Arasasingham, Charles R. Cornman, and Alan L. BalchCite this: J. Am. Chem. Soc. 1989, 111, 20, 7800–7805Publicatio…
We investigated the structure of silk fibroin dissolved in water and in water-organic solvent mixtures by CD and small-angle x-ray scattering (SAXS). CD spectra indicated a disordered secondary structure in water and a beta-sheet conformation in aqueous organic solvents, such as methanol, dioxane, and trifluoroethanol…
The relation between the lifetimes of the triplet states of various porphyrins and their photosensitizing effects on the photodynamic therapy (PDT) of tumor has been examined. Diethylene-triamine pentaacetic acid ester of 4-[1-(2-hydroxy-ethyloxy)ethyl]-2-vinyl deuteroporphyrin-IX gallium (III) complex (Ga-DP), zinc (…
Abstract Aliphatic‐aromatic poly(amide‐imide)s with high molecular weight (η inh up to 2,91 dl/g in DMAc/5% LiCl) were synthesized by direct polycondensation reaction of imide‐containing dicarboxylic acids and aromatic diamines using triphenyl phosphite in N ‐methyl‐2‐pyrrolidone (NMP)/pyridine solution in the presenc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies of the reduction of the nickel(II) complex of 5,10,15,20-tetraphenyl-21-thiaporphyrin to form corresponding nickel(I) complexesPiotr Chmielewski, Maria Grzeszczuk, Lechoslaw Latos-Grazynski, and Jerzy LisowskiCite this: Inorg. Chem. 1989, 28, 18, 3546–3552Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduction of dicyanoaurate(I) in aqueous solution: formation of nonmetallic clusters and colloidal goldShlomo Mosseri, Arnim Henglein, and Eberhard JanataCite this: J. Phys. Chem. 1989, 93, 18, 6791–6795Publication Date (Print):September 1, 1989Publication History Published…
The reaction of Cr0(C6MexH6-x)2 (x = 0, 3, 6), D, with TCNE, A, results in formation of 1:1 electron-transfer salts of [CrI(C6MexH6-x)2][TCNE] (x = 0, 3, 6) composition. The x = 0 and 3 complexes have been structurally characterized. The [CrI(C6H6)2]•+ salt belongs to the centrosymmetric P21/m space group [a = 10.347…
Neutron diffraction experiments have been performed on single crystals of ${\mathrm{La}}_{2}$${\mathrm{NiO}}_{4}$. Above 70 K the structure is orthorhombic Bmab. At 70 K a first-order transition occurs to a crystal structure that we believe to be tetragonal P${4}_{2}$/ncm. With our resolution we see no splitting of th…
Hybrid gels, defined as gels from mixtures of polymerically and colloidally derived sols, offer many opportunities for crystalline microstructure development upon heating. In this study, hybrid mullite gels are formed by mixing a colloidal boehmite—silica sol with a polymeric aluminum nitrate—tetraethoxysilane‐derived…
X-ray photoelectron spectroscopy has been used to monitor the surface chemical changes occurring on type II carbon fibers exposed to air, oxygen, and nitrogen plasmas. In all cases the plasmas caused changes in surface functionality, in terms of both C-O and C-N functionality. Prolonged exposure to the plasmas caused…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMonocapped tris(dioxime) complexes of technetium(III): synthesis and structural characterization of TcX(dioxime)3B-R (X = Cl, Br; dioxime = dimethylglyoxime, cyclohexanedione dioxime; R = CH3, C4H9)Elizabeth N. Treher, Lynn C. Francesconi, Jack Z. Gougoutas, Mary F. Malley,…