Eric J. Ginsburg

Soluble polyacetylenes by the ring-opening methathesis polymerization of substituted cyclooctatetraenes

Eric J. Ginsburg

Ring-opening metathesis polymerization has been applied to the synthesis of substituted polyacetylenes. The set of Me3M-substituted cyclooctatetraenes, where M = C, Si, Ge and Sn, have been polymerized using a well-defined tungsten alkylidene as an active metathesis catalyst. The resulting high molecular …

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In Vitro Characterization of Polyorthoester Microparticles Containing Bupivacaine

Jone-Shin Deng, Luk Li, Youqin Tian, Eric J. Ginsburg et autres

Laboratory-scale spray-congealing equipment was utilized to fabricate injectable microparticles consisting of polyorthoester and bupivacaine. Operating conditions for the spray-congealing process were optimized to produce microparticles with the desired shape and particle size to yield acceptable syringeability and injectability. Characterizations were performed to …

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A Conceptual Model for Forming Surfaces with Enantiomeric Functionality from Achiral Molecules

Eric J. Ginsburg

A conceptual model for forming surfaces with enantiomeric functionality from achiral molecules.

Eric J. Ginsburg

A means to form a surface with enantiomeric functionality using an achiral molecule is proposed. Specifically, if a meso compound were to be crystallized with the correct orientation, one set of opposing crystal faces would possess opposite handedness. This concept is a …

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Identification of a Yellow Impurity in Aged Samples of Aqueous Butamben Suspension: Evidence for the Oxidative Degradation of Poly(ethylene glycol)

Eric J. Ginsburg, Dennis A. Stephens, PAUL RONALD WEST, Alexander M. Buko et autres

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Solid-state deuterium nuclear magnetic resonance of the methyl dynamics of poly(α-methylstyrene) and polymethylphenylsilane

Robert D. O'Connor, Eric J. Ginsburg, Frank Dennis Blum

The methyl-d3 dynamics of two relatively similar polymers, poly(α-methylstyrene) (PAMS-d3) and polymethylphenylsilane (PMPS-d3), are investigated via deuterium NMR relaxation experiments. Our analysis of the relaxation data uses the entire solid-echo spectra to maximize the precision of the experiments with regard to the …

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Segmental Dynamics of Solid-State Poly(methylphenylsilane) by 1D and 2D Deuterium NMR

Robert D. O'Connor, Frank Dennis Blum, Eric J. Ginsburg, Robert D. Miller

The segmental dynamics of solid-state poly(methylphenylsilane) were probed with deuterium solid-echo and two-dimensional exchange (2D-X) NMR via a methyl-d3 label. Between 25 and 50 degreesC, the spectra indicated that the polymer consisted of two fractions-a fast fraction with correlation times (tauc) below …

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An Investigation of the Release Properties of a Cationic Drug From a Hydrophobic Polyanhydride Matrix as a Function of Dissolution Medium

Eric J. Ginsburg, T. D. M. Stultz, Dennis A. Stephens, Dan Robinson et autres

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Particle Size Determination of a Flocculated Suspension Using a Light-Scattering Particle Size Analyzer

Abha R. Bommireddi, L. C. Li, Dennis A. Stephens, Desmond Robinson et autres

Microscopy is a useful and direct method for measuring the particle size of a suspension because, in addition to the particle size and size distribution, it provides visual detection of the shape and state of aggregation of the particles in the suspension. …

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Access to Silicon-Derived Polymers via Acyclic Diene Metathesis Chemistry

Sophia K. Cummings, Eric J. Ginsburg, R. Miller, J. D. Portmess et autres

Acyclic diene metathesis (ADMET) polymerization has shown to be a clean route to silicon-based unsaturated polymers. High molecular weight carbosilane and carbosiloxane polymers have been generated with Schrock's well-defined tungsten and molybdenum alkylidenes. Monomer reactivity has shown to be highly dependant on …

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Polyacetylene

Eric J. Ginsburg, Christopher B. Gorman, Robert Howard Grubbs

This chapter contains sections titled: Introduction Syntheses and Properties Conclusions Experimental Procedures Acknowledgements Abbreviations References

Localization of Excitations by Electron-Donating Side Groups in the Novel Copolymer Poly[methylphenyl-co-methyl-4-(dimethylamino)phenylsilane]

David Smith, Scott A. Williams, Peter K. Jenkner, R. Miller et autres

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLocalization of Excitations by Electron-Donating Side Groups in the Novel Copolymer Poly[methylphenyl-co-methyl-4-(dimethylamino)phenylsilane]D. A. M. Smith, S. A. Williams, P. Jenkner, R. D. Miller, E. J. Ginsburg, and R. M. HochstrasserCite this: J. Phys. Chem. 1994, 98, 30, 7359–7365Publication Date …