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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 76 for “"maleimide"”.
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Cyclopentadiene-Maleimide Platform for Thermally Reversible Polymers
… of bis-cyclopentadienes (bis-CPDs) and bis-maleimides (bis-MIs), that meets two main objectives. First, the bis-CPD must resist characteristic self-coupling. Second, the CPD-MI adducts should undergo the retro-Diels-Alder (rDA) reaction (i.e., thermal depolymerization) in a temperature …
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Study of poly(phenylene ethynylene)s, dendritic quenchers, and molecular beacons towards the application of a poly(phenylene ethynylene)-based biosensor
… is presented: (1) a PPE with masked pendent maleimide groups for bioconjugation, (2) a dendritic quencher (DQ) that will be crucial for signal transduction, and (3) a DNA sequence known as a molecular beacon (MB) selective for Escherichia coli 0157:H7. In order to continue expanding the scope …
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Gas permselectivity in amorphous linear and crosslinked poly(arylene ether ketones)
… of the effect of crosslinking via terminal maleimide units on the gas transport properties through a dense polymer film of amorphous Poly(Arylene Ether Ketones) or PEK. The methodology for the preparation of crosslinked maleimide terminated PEK (or MIPEK) films from several blend ratios of …
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Surface Plasmon Resonance Imaging Biosensors for Cancer Diagnosis: Detection of Circulating Tumor DNA
… with different percentages (y%) of maleimide-OEG-NHS ester chains (PLL-mal(y%), from 13% to 26%), and the anionic oligopeptide CEEEEE, composed of one cysteine (C) and five glutamic acids (E), with a short sequence to limit the thickness of the mixed-charge polymer antifouling …
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Synthesis and Characterization of Poly(lactide) Functional Oligomers and Block Copolymers
… alcohols bearing vinylsilane, vinylether and maleimide moieties to provide appropriate end groups for conjugating targeting ligands. The polyethers with narrow molecular weight distributions were utilized as macroinitiators for the synthesis of poly(lactide) block. Heterobifunctional diblock …
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The development of a radiolabelled macromolecule as a therapeutic agent for the treatment of cancer
… amine. This amine would then be converted into a maleimide functionality suitable for Michael addition with a free thiol group contained within the proposed bio-carrier to form the desired bioconjugate. Further studies described towards the synthetic construction of the bioconjugate include: 1) …
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A characterization of chicken heart mitochondrial malate dehydrogenase
… modifying most of the sulfhydryl groups. N-Ethyl maleimide modification of the enzyme's sulfhydryl groups at pH 4.8 was found to be slightly more specific in its modification than Ellman's reagent. The number of sulfhydryl groups modified by N-ethyl maleimide increased with either lowering of the …
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Synthesis and characterization of rigid nanoporous hypercrosslinked copolymers for high surface area materials with potential hydrogen storage capabilities
… concept. We enchained N-substituted maleimide and functionalized stilbene alternating copolymers into a "hypercrosslinked system" to achieve high rigidity, high surface areas, high aromatic content and good thermal stability. Hypercrosslinked copolymers of N-(3-methylphenyl)maleimide …
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Synthesis and Characterization of Nanoporous Copolymers with Potential Gas Storage Applications
… or tert-butyl carboxylate-functionalized phenyl maleimide, were investigated using nitrogen sorption/desorption isotherms at 77 K and molecular simulations. These alternating copolymers were found to have Brunauer-Emmett-Teller (BET) surface areas in the range of 20-40 m2/g. Surface areas of …
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Segmented Aromatic Polymers Containing Thermally Reversible Linkages
… reversible linkages based on cyclopentadiene-maleimide Diels-Alder chemistry. Research in the area of thermally reversible (self-healing) polymers has been an ever-expanding area of interest in the current scientific literature. However most of the emphasis has been on systems containing …
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Mechanochemical activation at solid interfaces
… delamination. The activation of a patterned maleimide-anthracene (MA) mechanophore functionalized epoxy-fused silica interface is characterized with laser-induced stress waves. Active specimens with MA mechanophore covalently bonded at the fused silica and epoxy interface were successfully …
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Studies Related to the Alternating Copolymerization of Substituted Stilbenes
… polyanion based on functionalized stilbenes and maleimides have been prepared: poly(di-t-butyl-(E)-4,4′-stilbenedicarboxylate-co- N-(4-(t-butoxycarbonyl)phenyl)maleimide) and poly(N,N,Nâ ,Nâ -tetraalkyl-4,4′-di- aminostilbenes-co-N-4-(N′,N′-dimethylaminophenyl)-maleimide). These copolymer …
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Synthesis and Characterization of Aryl Phosphine Oxide Containing Thermoplastic Polyimides and Thermosetting Polyimides with Controlled Reactivity
… Reactive phenylacetylene, acetylene and maleimide terminated poly(ether imide) oligomers were prepared and characterized. Optimal reaction conditions were established to produce fully endcapped oligomers with imidized structures and controlled molecular weight. The phenylacetylene …
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Cyclopentadiene as a Platform for Polymer Synthesis and Modification of Macromolecular Systems
… (CPD-1) with N-(4-fluorophenyl)maleimide (FMI) were explored as models for cyclopentadiene-maleimide-based Diels-Alder polymerizations. Mixtures of five endo/exo adducts were obtained, dependent upon CPD-1 tautomers present at reaction temperatures. The thermodynamic adduct …
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Synthesis, Characterization, and Application of Metal-chelating Polymers for Mass Cytometric Bioassays
… lanthanide chelators to every repeat unit, and a maleimide at the end of the chain. The second goal was to apply these metal-chelating polymers in bioassay experiments. The DTPA groups were loaded with lanthanide ions, and the maleimide group was used to covalently attach the polymer to an Ab. …
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Artificial Transmembrane Signalling
… into more biological systems. Firstly, a maleimide transducer was designed as a “stem transducer” to which a wide range of recognition groups could be attached in situ by using maleimide-thiol conjugation chemistry. Secondly, a carboxylic acid transducer was studied in an attempt to …
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Cresol Novolac/Epoxy Networks: Synthesis, Properties, and Processability
… compared to phenolic novolac/epoxy mixtures. Maleimide functionalities were incorporated into cresol novolac oligomers, and these were crosslinked with bisphenol-A epoxy. The processability of oligomers containing thermally labile maleimides were limited to lower temperatures. However, …
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Functional Polymers Containing Semi-Rigid Alternating Sequences
… in our group are the stilbene-maleic anhydride/maleimide alternating copolymers. These copolymers possess sterically congested backbones and precisely placed functional groups arising from the strictly alternating copolymerization. The research in this dissertation is focused on the synthesis, …
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Synthesis, Molecular Structure and Reactivity of Di(1-cyclohepta-2,4,6-trienyl) thioether, S(C7H7)2 and Tri(1-cyclohepta-2,4,6-trienyl) amine, N(C7H7)3
… Diels-Alder reactions with maleic anhydride, maleimide and N-phenyl maleimide to give the adducts S(C7H7)(C7H7C4H2O3) (4a), S(C7H7)(C7H7C4H3NO2) (4b) and S(C7H7)(C7H7C10H7NO2) (4c), respectively. In these three compounds, one cyclohepta-2,4,6-trienyl ring has remained intact, whereas the other …
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Interfacial Nitrone 1,3-Dipolar Cycloadditions for Modification of Monolayer Protected Gold Nanoparticles
… This thesis looks to examine the use of a maleimide modified-MPN as a template and its ability to undergo the 1,3-dipolar cycloaddition reaction with a series of nitrones under ambient and high-pressure conditions. Expanding the scope of this reaction to the investigation in synthesizing a …
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