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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 23 for “"Dendron"”.
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Cross-Linked Polybenzyl Ether and Polyglycerol Dendrimers for Monomolecular Imprinting
… by direct coupling of a acid chloride dendron to a glycoside or by attachment of an azide dendron to a core containing alkyne groups using copper-catalyzed 1,3-dipolar cycloaddition. The glycoside dendrimers displayed chiral activity that increased after the dendrimers were …
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Part I: Rapid Synthesis of Dendrimers by an Orthogonal Coupling Strategy. Part II: Design, Synthesis, and Characterization of Hydrogen-Bond Mediated Self-Assembling Dendrimers
… orthogonal coupling strategy. Fourth generation dendron 71 was prepared in four steps by sequential use of two AB$\sb2$ building blocks 66 and 67 under Mitsunobu esterification and Sonogashira coupling conditions. Further accelerated growth was achieved by merging the orthogonal coupling strategy …
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Single molecule optical absorption at room temperature detected by scanning tunneling microscopy
… optical and surface characterization of a dendron functionalized with two green donor dyes (Cy3) and one red acceptor dye (Cy5) through flexible linkers, that will be used in the next generation of SMA-STM experiments on metal films, is presented. Single-molecule experiments based on …
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Synthesis and characterization of polyamidoamine dendrons
… study is to synthesize Poly AMido AMine (PAMAM) dendrons using silica gel as support and characterize them. PAMAM dendron, a hyperbranch of the PAMAM dendrimer, was divergently synthesized on solid support. Prior to the propagation through (1) Michael addition of acryl ester to an amino reactive …
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The synthesis and assembly of linear-dendritic rod diblock copolymers
… rods have been prepared by assembling a dendron around each repeat unit of a linear polymer core, and hybrid-linear dendritic diblock copolymers have been prepared by attaching a dendron to the end functional group of a linear polymer. This linear block in the diblock copolymers also adds …
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Designing a safe dendronised polymeric nanocarrier for hydrophobic drugs or gene delivery in cancer therapy
… block copolymers based on hydrophobic dendrons have shown to be a promising strategy to enhance the solubility of hydrophobic drugs, prolong circulation time, minimise non-specific uptake, and allow for specific tumour-targeting through the EPR effect. Herein, we have proposed the …
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Hyperbranched polymers and Haag type dendrimers for the molecular imprinting of polymers
… polyglycerol and Haag type polyether dendrons with estradiol as a core. The attachment of the polyether dendron created a dendrimer that had 64 allyl groups available for crosslinking. Completion of the crosslinking of the dendrimer resulted in a polymer that was not fully crosslinked, …
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EXPANDING APPLICATIONS OF IRON OXIDE NANOPARTICLES BY SURFACE FUCNTIONALIZATION: FROM MAGNETIC RESONANCE IMAGING TO NANO-CATALYSIS
… strategy was established. The Simanek dendrons (G1 to G3), oligonucleotides and amino acids were loaded onto SPION surfaces via this approach to develop pH-sensitive MRI contrast agents, specific-DNA MR probes and a biomimetic hydrolysis catalyst. Dendron-SPION conjugates (G1 to G3) …
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Biomimetic models for redox enzyme systems
… and noncovalent behaviour. A series of dendrons have been synthesised and studied that have a water-soluble dendron architecture attached to the flavin moiety, as well as a series of dendrons with branching designed to encapsulate the flavin unit. Finally, a biomimetic model of the …
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Self-assembly of linear-dendritic diblock copolymers
… oxide (PEO) with a polyamidoamine (PAMAM) dendron covalently bonded to one chain end. Specular neutron reflectivity has been used to investigate the structure of monolayers formed at an air-water interface. The dendritic end groups were functionalized with deuterated stearic acid to make …
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Design, Synthesis, and Characterization of Glycodendrons Through Small Molecule and Linear Polymer Models
… synthesis, and characterization of glycopolymer-dendron thiol-ene coupling reactions with the long-term goal of increasing biocompatibility of near infrared (NIR) fluorophores for bioimaging applications. A design of experiments was used with small molecule model compounds to determine the …
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Elucidation of Design Criteria for Non-Viral Gene Delivery Vector Development
… and even ligand attachment can be applied to dendron-based gene delivery vectors.
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Dendritic rhodium catalyst precursors for the hydroformylation of olefins
… synthesize and characterise a series of Fréchet dendrons bearing rhodium Schiff-base moieties at the focal point, and investigate their potential as catalyst precursors in the hydroformylation of olefins. A series of Fréchet dendrons with methyl ester groups at the periphery were prepared. The …
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Self Assembling Phenylene Vinylene Materials and Devices
… electrode and the emissive phenylene vinylene dendron segregated to the electron injecting metal, the desired self assembled state. (Abstract shortened by UMI.).
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Self Assembling Bioactive Materials for Cell Adhesion in Tissue Repair
… series of molecules were designed to incorporate dendrons based on amino acids at the termini of the diblock structures. It was determined that lysine, a basic amino acid, covalently coupled to cholesteryl-(L-lactic acid) can promote cell adhesion and spreading while negatively charged and …
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Photonic Properties of Self -Assembled Organic Materials: Supramolecular Films, and Nanoribbon -Templated Gels and Polymers
… self-assemblies, and materials templated with dendron rodcoil (DRC) nanoribbons. A rodcoil molecule contains covalently connected rod-like and coil-like segments. The aggregation of rodcoils forms supramolecular polar layered structures with infinitymm symmetry. Nonlinear optical properties of …
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Synthesis, Characterization, and Antimicrobial Activity of Water-soluble, Tri-carboxylato Amphiphiles
… connected to the first-generation, Newkome-type dendron via a ureido linker. We have demonstrated that as tris(triethanolammonium) salts, these amphiphiles show excellent solubility in water. The solubilities in aqueous triethanolamine solution of the three series containing mobile hydrophobic …
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Chemical functionalization and modification of Au clusters
… Au cluster-cored dendrimers with various dendron generations and core sizes can be formed using the divergent strategy. Direct synthesis does not allow for control of cluster size, while the divergent method does not give fully uniform dendrons at higher generations. Finally, the catalytic …
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Preparing Biological surfaces with well defined density and spatial distribution
… interactions and the steric bulk of dendrons (to achieve the spacing). In order to do this, the axle component of a pseudorotaxane complex would have to be synthesised and absorbed to the surface via covalent bonding (chemisorption) to create a self-assembled monolayer (SAM). This is …
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Regulating the Biomedical and Biocatalytic Properties of Amphiphilic Self-assembling Peptides via Supramolecular Nanostructures
… with a Newkome-like poly(ethylene glycol) dendron, this PHDC self-assembles into spherical or fibril nanostructures with or without stirring. The H2S release was further studied by triggering release with various charged thiol molecules. Finally, another facet of this document focuses on …
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