Materials Literature
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The basic ideas and approximations underlying the derivation of the mode coupling theory of structural relaxation in simple liquids are summarized. We explain why in disordered many particle systems the infinite set of density fluctuation products constitutes slow modes whose interactions lead to bifurcation singulari…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPorphyrins: Powerful Chromophores for Structural Studies by Exciton-Coupled Circular DichroismStefan Matile, Nina Berova, Koji Nakanishi, Snejana Novkova, Irena Philipova, and Blagoy BlagoevCite this: J. Am. Chem. Soc. 1995, 117, 26, 7021–7022Publication Date (Print):July 1,…
We report detailed x-ray powder-diffraction measurements on a sample consisting of \ensuremath{\sim}60% carbon nanotubes and \ensuremath{\sim}40% carbon nanoparticles. These measurements demonstrate the existence of short-range interlayer stacking correlations. Our calculations show that such correlations should not b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectroactive and Photoactive Rod-Coil Copolymers: Design, Synthesis, and Supramolecular Regulation of Photophysical PropertiesJohn A. Osaheni and Samson A. JenekheCite this: J. Am. Chem. Soc. 1995, 117, 28, 7389–7398Publication Date (Print):July 1, 1995Publication History P…
Abstract Novel supramolecular liquid‐crystalline materials have been obtained by the hydrogen bond formation between different and independent molecules. The self‐assembly of carboxylic acid and pyridine moieties that function as H‐bond donors and acceptors, respectively, results in the formation of mesogenic complex…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVibrational Studies of a Series of .alpha.-Oligothiophenes as Model Systems of PolythiopheneG. Louarn, J. P. Buisson, S. Lefrant, and D. FichouCite this: J. Phys. Chem. 1995, 99, 29, 11399–11404Publication Date (Print):July 1, 1995Publication History Published online1 May 20…
Low molecular weight polystyrene-bloch-polyisoprene (SI diblock) copolymers having a wide range of compositions were synthesized via anionic polymerization, and the order-disorder transition temperatures (T-ODT) of the block copolymers were determined using dynamic viscoelastic measurements. We have shown that logarit…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared Spectroscopic Study of the Phases and Phase Transitions in Poly(ethylene oxide) and Poly(ethylene oxide)-Lithium Trifluoromethanesulfonate ComplexesM. A. K. L. Dissanayake and Roger FrechCite this: Macromolecules 1995, 28, 15, 5312–5319Publication Date (Print):July…
The core structure of nematic defects cannot be represented by the usual director field, but requires the description by the full orial calculus.Received 9 March 1995DOI:https://doi.org/10.1103/PhysRevE.52.718©1995 American Physical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of polypeptide-dye multilayers by electrostatic self-assembly techniqueThomas M. Cooper, Angela L. Campbell, and Robert L. CraneCite this: Langmuir 1995, 11, 7, 2713–2718Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published in…
Nitrogen regulation of transcription in Escherichia coli requires sensation of the intracellular nitrogen status and control of the dephosphorylation of the transcriptional activator NRI-P. This dephosphorylation is catalyzed by the bifunctional kinase/phosphatase NRII in the presence of the dissociable PII protein. T…
Abstract Treelike (dendritic) structures made of Ru II ‐polypyridine complexes have been prepared by the “complexes‐as‐metals and complexes‐as‐ligands” synthetic strategy. The key building blocks are Ru II complexes of the 2,3‐bis‐(2‐pyridyl)pyrazine(2,3‐dpp) bridging ligand, where one of the two chelating sites can b…
The nature of guided modes and defect modes in periodic dielectric waveguides is investigated computationally for model systems in two dimensions. It is shown that defect states that exist within the band gap of guided modes can be excited to form tightly localized high-Q resonances.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRegio- and Stereochemical Aspects of the Palladium-Catalyzed Reactions of SilanesKeith A. HornCite this: Chem. Rev. 1995, 95, 5, 1317–1350Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs.org/doi/…