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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 521 for “"Oligomers"”.
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Templated synthesis of synthetic oligomers
… Hunter group towards the development of sequence oligomers equipped with H-bond donor and acceptor recognition units, which are able to assemble into duplexes by H-bonding between sequence-complementary oligomers. This thesis describes a new class of melamine oligomers composed of alternating …
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Ester-Based Synthetic Information Oligomers
… we present efforts towards a new family of oligomers that contain a sequence of hydrogen-bonding recognition sites, used as the bits for binary data encoded in an organic information molecule. Several monomer designs were implemented and investigated, and the final system uses single-point …
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Solvophobically-Driven Folding of Non-Biological Oligomers and the Solid Phase Synthesis of Phenylacetylene Oligomers
… ordered sequence of monomers in phenylacetylene oligomers can serve as a repeating motif to produce helical structures in solution which posses a tubular cavity. Calculations with modest size oligomers show stable helical conformations with as few as 8 monomer units. Oligomers with triglyme …
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Phenylacetylene oligomers as synthetic information molecules
… was observed in the AD mixed 2-mer. Longer oligomers were synthesised using a method of oligomerisation and chromatographic separation by reverse-phase preparatory HPLC. Homo-oligomers up to the 7-mer were isolated and binding studies between complementary all donor, all acceptor …
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Automated Synthesis of Duplex-Forming Recognition-Encoded Oligomers
… the Hunter group, recognition-encoded melamine oligomers (REMOs) composed of alternating piperazine and triazine units, equipped with phenol and phosphine oxide hydrogen-bonding groups, have been shown to form sequence- and length- selective duplexes and are a promising candidate for such a …
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Singlet Fission in Pechmann Dyes and Molecular Oligomers
… investigates triplet hopping in singlet fission oligomers. First, we present a novel screening approach that leverages the concept of ground and excited state aromaticity combined with double-bond conformation to establish new design rules for singlet fission chromophores. By investigating …
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Synthesis and characterization of phenylethynyl endcapped polyetherimide oligomers
… soluble phenylethynyl-terminated ether imide oligomers of 2.0-10.0 kg/mole (Mn) were prepared in high yield by the reaction of 2,2'-Bis[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride (Bisphenol- A Dianhydride, BPADA) with a stoichiometric excess of p-/m- phenylene diamine and …
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Novel Sulfated 4-Hydroxycinnamic Acid Oligomers as Potent Anticoagulants
… work investigates chemo-enzymatically prepared oligomers of 4-hydroxycinnamic acids (DHPs) as potential anticoagulants. Oligomers were prepared through peroxidase-catalyzed oxidative coupling of 4-hydroxycinnamic acids. The products resulting from this reaction are called CDs, FDs and SDs. …
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Nylon-6,6 oligomers : Synthesis, characterization and relevance to the polymer.
… potential routes for the synthesis of selected oligomers of nylon-6.6 and trial syntheses using these routes. Once a general synthetic route to pure oligomers is available it can be applied to the preparation of oligomers of increasing length, while maintaining purity for future characterization …
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Novel Organophosphorus Oligomers. Synthesis and conformation of α-hydroxy phenylphosphinates
… for the synthesis of α-hydroxy phenylphosphinate oligomers as well as hybrid oligomers containing α-hydroxy phenylphosphinic acid and α-amino carboxylic acids. In particular, synthesis of a series of dimeric α-hydroxy phenylphosphinates are reported. The analysis of these dimers by a combination …
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Hydrogen Bond Template-Directed Synthesis of Recognition-Encoded Melamine Oligomers
… synthesis of recognition-encoded melamine oligomers (REMO). A copper-catalysed alkyne-azide cycloaddition (CuAAC) reaction between two REMO 3-mers, bearing 4-nitrophenol recognition units, an alkyne and an azide, was found to be templated by a complementary REMO 6-mer phosphine oxide …
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Characterizing antigen-specific CD4⁺ T cells using HLA-DR oligomers
… proper immune function. In this thesis, soluble oligomers of MHC-peptide complex were used to investigate several aspects of the T cell immune response. Soluble fluorescent oligomers of human class II MHC were produced and used to detect CD4+ T cells of particular specificities. The critical …
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Synthesis and characterization of poly(arylene ethers) and functionalized oligomers
… molecular weight polymers and functionalized oligomers. We have extended this method to include amine terminated oligomers through the use of a novel aminophenolic compound 2-p-aminophenyl-2-p-hydroxyphenylpropane or MBA. The use of MBA to introduce terminal amine functionality allowed a …
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Supercritical Fluid Extraction of Nylon 6,6 Fiber Finish and Oligomers
… Also, excessively high concentrations of oligomers may result in residue deposits on processing equipment. Typical conventional methods for determining the concentration of oligomers present in fibers involve large quantities of organic solvent for removal of the oligomers followed by …
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Synthesis and Characterization of Thermosetting Polyimide Oligomers for Microelectronics Packaging
… series of reactive phenylethynyl endcapped imide oligomers has been prepared in either fully cyclized or amic acid precursor form. Soluble oligomers have been synthesized with controlled molecular weights ranging from 2- to 12 Kg/mol. Molecular weight characterization was performed using SEC (size …
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Tailoring Fluorene-based Oligomers for micron and sub-micron sized Photopatterning
… and application of well-defined fluorene oligomers for photoptatterning. Two types of fluorene oligomers are presented: pure fluorene oligomers and fluorene cooligomers incorporating various comonomers for adjusting the conductive properties towards electron and hole conduction. Since …
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Plasmon Hybridization in Clusters of Metal Nanoparticles and Magnetic Nanoparticle Oligomers
As the field of plasmonics develops, new knobs to turn and levers to pull become available to researchers. From the morphology and material composition of individual nanoparticles to background environments tunable in real time to aggregation scheme and spatial arrangement, many avenues for …
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