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Showing 1 to 20 of 964 for “"Monomer"”.
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Monomer synthesis and polymer pyrolysis
… purification techniques needed to produce monomer grade products. Utilizing the preparative methods represented in the present work, it was possible to obtain sufficiently pure 3F-diamine to allow the synthesis of soluble, end-capped, fully cyclized polyimides with glass transition …
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Studies on a monomer of feather keratin
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1954.
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Novel Monomer Design for Next-Generation Step-Growth Polymers
Facile monomer synthesis provided routes towards novel step-growth polymers for emerging applications. Adjustment of reaction conditions enabled green synthetic strategies, and promising scalability studies offered impetus for industrial funding. Engineering thermoplastics, such as linear …
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Synthesis of an activated difluorotetraketone monomer via Reissert chemistry
… to synthesize an activated difluorotetraketone monomer, 1 A-bis { 1-[ 4-(p-fluorobenzoyl)isoquinoly ] carbonyl } benzene (18). Two synthetic routes were explored in an attempt to find an efficient means of preparation. These routes entail preparation via a dibenzylic bis(isoquinoline) and a …
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Polyglutamine monomer structure and its implications for molecular self-assembly
Polyglutamine is a naturally occurring peptide found within several proteins in neuronal cells of the brain, and its aggregation has been implicated in several neurodegenerative diseases, including Huntington's disease. The resulting aggregates have been demonstrated to possess ~-sheet structure, …
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Structure and Morphology of Photoreactive Monomer–Nanoparticle Mixtures Under Patterned Irradiation
… beams, this work extends LISW to nanoparticle–monomer mixtures to develop functional polymer composite materials. In a model photoreactive system containing Si nanoparticles dispersed in triacrylate monomer mixture undergoing LISW, it is found that the extent of nanoparticle dynamics can be …
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Towards polyethylene-based materials with non-alternatively incorporated carbon monoxide monomer
The synthesis of ethylene/carbon monoxide copolymers (polyketones) was pursued via insertion polymerization methods through palladium(II) and nickel(II) catalysis. Specifically, phosphine sulfonate palladium(II) precatalysts derived from the in situ complexation of palladium(II) acetate and …
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Role of interleukin-8 monomer-dimer equilibrium and glycosaminoglycan interactions in neutrophil recruitment
… All chemokines including IL-8 exist as both monomers and dimers and in vitro studies have shown that both monomers and dimers of IL-8 can bind to GPCRs and GAGs, though with different affinities and specificities. However, the role of monomers, and dimers and of monomer-dimer equilibrium in …
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Investigation of Neural and Epithelial Cadherin Monomer Properties Using a Molecular Dynamics Approach
… of calcium, cadherins are in equilibrium between monomeric and dimeric states, and the scope of this thesis focuses on monomeric cadherin. These molecular dynamics evaluations are based on the testing of specific hypotheses regarding the intramolecular interactions of neural and epithelial …
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Chemokine CXCL7 Monomer, Homodimer, and Heterodimer: Structural Insights, CXCR2 Receptor Function, and Glycosaminoglycan Interactions
… that regulate receptor activity. CXCL7 exists as monomers and dimers and there is also evidence that it could form heterodimers. Currently, nothing is known regarding the structural features of the monomer, dimer, and heterodimer, and the molecular basis by which these various forms mediate …
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Chemokine CXCL7 Monomer, Homodimer, and Heterodimer: Structural Insights, CXCR2 Receptor Function, and Glycosaminoglycan Interactions
… that regulate receptor activity. CXCL7 exists as monomers and dimers and there is also evidence that it could form heterodimers. Currently, nothing is known regarding the structural features of the monomer, dimer, and heterodimer, and the molecular basis by which these various forms mediate …
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New Purification Strategies and Monomer Platforms for Ruthenium-Initiated Living Ring-Opening Metathesis Polymerization
… group tolerance, the ready availability of monomers and initiators, and the overall ease at which well-defined polymers can be rapidly synthesized. However, complete removal of ruthenium residues from the product is a difficult task that is compounded by the lack of understanding of …
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Das Lektin aus der Erbse Pisum sativum : Bindungsstudien, Monomer-Dimer-Gleichgewicht und Rückfaltung aus Fragmenten
… hohe Sequenzhomologie, und die Struktur ihrer Monomere, ein all-ß-Motiv, ist hoch konserviert. Dagegen gibt es innerhalb der Familie eine große Vielfalt an unterschiedlichen Quartärstrukturen, die Gegenstand kristallographischer und theoretischer Arbeiten waren. Das Erbsenlektin ist ein dimeres …
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Cooperativity of ligand binding as a function of monomer-dimer equilibrium Parameters and Acceptor Concentration
<p>A general monomer-dimer equilibrium system involving ligand interactions is presented. Cooperativity features of specific limited models are analyzed by selecting the appropriate family of equilibrium constants from this general scheme. Each system is then characterized in terms of Hill …
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A study of monomer liquid mixtures and polymer network formation at a solid surface using molecular dynamics
… achieving bond formation between individual monomer particles. This model was easily implemented, in LAMMPS, and was also used to study the properties of liquids and liquid mixtures near a surface. The same distinct interface region adjacent to the surface was also observed.The polymerisation …
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Radical based molecular design of discrete and stereoregulated oligomers via photomediated RAFT single unit monomer insertion (photo-RAFT SUMI)
… two major factors throughout the polymer chain: monomer sequence and stereoregularity. For a long time, polymer chemists have dedicated themselves to achieve such dual control during the synthesis of synthetic polymers in order to emulate such structurally perfect biopolymers. Despite the success …
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