Materials Literature
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▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemical alignment regulation of a nematic liquid crystal by Langmuir-Blodgett layers of azobenzene polymers as "command surfaces"Takahiro Seki, Takashi Tamaki, Yasuzo Suzuki, Yuji Kawanishi, Kunihiro Ichimura, and Koso AokiCite this: Macromolecules 1989, 22, 8, 3505–35…
The phase change, densification, and microstructure development of ZnO doped with both Bi 2 O 3 and Sb 2 O 3 are studied to better understand the sintering behavior of ZnO varistors. The densification behavior is related to the formation of pyrochlore and liquid phases; the densification is retarded by the former and…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLarge intensity enhancement of the spin-forbidden 4A2g .fwdarw. 2Eg transition in chromium(III)-semiquinone complexesC. Benelli, A. Dei, D. Gatteschi, H. U. Guedel, and L. PardiCite this: Inorg. Chem. 1989, 28, 16, 3089–3091Publication Date (Print):August 1, 1989Publication…
Static magnetic susceptibility has been investigated in two cobalt-based diluted magnetic semiconductors, ${\mathrm{Zn}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Co}}_{\mathrm{x}}$S and ${\mathrm{Zn}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Co}}_{\mathrm{x}}$Se. The measurements were performed in the temp…
Abstract Binding of a noble metal salt, e.g., PdCl to a functional ligand on a polymer surface, e.g., amine, quaternary ammonium, sulphonic acid, followed by reduction to zerovalent state and subsequent reductive deposition of transition metal ions, such as copper, nickel, and cobalt, provides a sequence of events lea…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInvestigation of the microphase separation transition in low-molecular-weight diblock copolymersJohn N. Owens, Irena S. Gancarz, Jeffrey T. Koberstein, and Thomas P. RussellCite this: Macromolecules 1989, 22, 8, 3380–3387Publication Date (Print):August 1, 1989Publication His…
Procedures of X-ray diffraction line profile analysis for the evaluation of the dislocation content in plastically deformed hexagonal materials were tested by means of conventional powder diffractometry on polycrystalline zirconium deformed under tension at 77 K. In order to obtain a representative picture of the disl…
The microstructure of nanocrystalline Pd was investigated by small-angle neutron scattering. The strong scattering signal is interpreted as originating from crystallites embedded in a matrix formed by incoherent interfaces. From the scattering curves size distributions were determined, which yield an average radius of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of molecular weight on the thermotropic mesophases of poly[6-[4-(4-methoxy-.beta.-methylstyryl)phenoxy]hexyl methacrylate]Virgil Percec, Dimitris Tomazos, and Coleen PughCite this: Macromolecules 1989, 22, 8, 3259–3267Publication Date (Print):August 1, 1989Publicat…
A quantitative description of the degree of sensitization in austenitic stainless steels has been developed based on percolation theory. This is used to predict the likelihood of failure of sensitized stainless steel by intergranular stress corrosion cracking (IGSCC). The underlying premise is that, for a component to…
Charge coupling of the catalyzed reduction of O 2 on platinized poly(3‐methylthiophene) [P(3‐MT)] films to the anodic dissolution of Ti is reported. Specifically, the redox polymer with Pt catalyst is used in these studies to mediate electrons generated by Ti dissolution and consumed by O 2 reduction. Due to the large…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDehydrogenative coupling of diarylsilanesLihsueh S. Chang and Joyce Y. CoreyCite this: Organometallics 1989, 8, 8, 1885–1893Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue 1 August 1989https://pubs.acs.org/doi/10.1021/om…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
A novel type of mesogenic molecule and a new way of introducing chirality into liquid-crystalline compounds are both realized in roof shaped 1, obtained as a mixture of three diastereoisomers. Compound 1 forms an S mesophase between 102 and 119°C, and its electro-optic switching behavior in an electric field fits the…
Angular distributions of the $^{54}\mathrm{Fe}$(p,n${)}^{54}$Co and $^{54}\mathrm{Fe}$(n,p${)}^{54}$Mn cross sections have been measured to test the Gamow-Teller sum rule [${S}_{\mathrm{\ensuremath{-}}}$-${S}_{+}$=3(N-Z)] in a case where the Gamow-Teller strength is large for both channels. The results for ${S}_{\math…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyhedral aluminosilsesquioxanes: soluble organic analogs of aluminosilicatesFrank J. Feher, Theodore A. Budzichowski, and Keith J. WellerCite this: J. Am. Chem. Soc. 1989, 111, 18, 7288–7289Publication Date (Print):August 1, 1989Publication History Published online1 May 20…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntermediates in the epoxidation of alkenes by cytochrome P-450 models. 5. Epoxidation of alkenes catalyzed by a sterically hindered (meso-tetrakis(2,6-dibromophenyl)porphinato)iron(III) chlorideDrazen Ostovic and Thomas C. BruiceCite this: J. Am. Chem. Soc. 1989, 111, 17, 6…
We report the structure of two chain compounds formed by manganese(I1) hexafluoroacetylacetonate and nitronyl nitroxide radicals 2-R-4,4,5,5-tetramethyl-4,5-dihydro-lH-imidazolyl-l3--ooxxiyd e, Mn(hfac),NITR, with R ethyl, Et (I), and n-propyl, n-Pr (11), which crystallize in the monoclinic P21/n space group with a =…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarboxylate-histidine-zinc interactions in protein structure and functionDavid W. Christianson and Richard S. AlexanderCite this: J. Am. Chem. Soc. 1989, 111, 16, 6412–6419Publication Date (Print):August 1, 1989Publication History Published online1 May 2002Published inissue…