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Showing 1 to 16 of 16 for “"amphiphilic polymer"”.
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Synthesis and investigation of UV-cured, complex amphiphilic polymer films for use in anti-biofouling applications
… research included the development of novel amphiphilic anti-fouling coatings having complex surface topography and compositional heterogeneity and a fundamental investigation of their properties. These films were cultivated as non-fluorinated or non-fluorinated/non-PEGylated analogs to the …
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Surface functionalisation techniques for colloidal inorganic nanocrystals
… uses the hydrophobic interaction between an amphiphilic polymer and nanocrystal ligands to provide a foundation for growth of a silica layer. The coated nanocrystals are characterised using a wide range of techniques confirming that the presence and location of the silica shell. In Chapter 4, …
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Adsorption of Dendritic Fluorocarbon End-Capped Poly(Ethylene Oxide) at an Air-Water Interface – A Synthetic, Analytical and Computational Study
Adsorption of amphiphilic polymer molecules to an interface can induce interesting properties on both the bulk of the material as well as the interface itself. Previous experiments carried out by other groups at Durham University have shown that functionalizing PEO with fluorocarbon groups can lead …
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Surface modifications of iron oxide nanoparticles for biological applications
… hydrophobically-modified polyacrylic acid (mPAA) amphiphilic polymer and catechol-derivative surfactants resulted in hydrophilic MPs that are stable in physiological environment and small in their hydrodynamic size. These MPs are also designed to possess active functional groups that are necessary …
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Effect of Quantum Dots, Novel Biological Imaging Agents, in Liver Cells in Vitro
The use of Quantum dots (QDs) coated with polymer and functionalized with carboxylic acid groups in medical applications are explored. Their water solubility and exceptional stability in aqueous environments make them potentially useful for such applications as imaging and ligand attachments. …
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Synthesis of pH-responsive core-shell nanoparticles of different sizes and with different shell compositions
… Poly(ethylene glycol) methacrylate copolymer nanoparticles were sterically stabilized by the amphiphilic polymer brush at the particle surface and exhibited slightly smaller hydrodynamic diameter measured by dynamic light scattering. Manipulation of the reaction kinetics and the …
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Nanoparticle-coated polymeric microbubbles for revascularization
… where the microbubble were self-assembled by the amphiphilic polymer. Microbubbles are commonly used as ultrasound contrast agents, and the limited life time of microbubbles is the major challenge for microbubble applications. The coating of the nanoparticles enhanced the microbubbles’ stability, …
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Effects of Functionality and Charge in the Design of Acrylic Polymers
… intiator enabled the anionic polymerization of methyl methacrylate at room temperature, resulting in narrow molecular weight distributions and syndiorich structures. Polymerizations were controlled above Al:Li = 2, and control significantly decreased at elevated temperatures …
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Development of polymer-coated nanoparticle imaging agents for diagnostic applications
… work, we describe the design and development of polymer-coated nanoparticle imaging agents for use in blood, cell and tissue diagnostic applications. Low-molecular weight, amphiphilic polymers capable of noncovalent interactions with nanoparticle surface ligands and the aqueous environment were …
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Template-Controlled Synthesis of Magnetic/Semiconducting Nanoparticles within Amphiphilic Core-Shell Cylindrical Polymer Brushes
Core-shell cylindrical polymer brushes with poly(t-butyl acrylate)-b-poly(n-butyl acrylate) (PtBA-b-PnBA) diblock copolymer side chains were synthesized via the “grafting from” technique using a combination of anionic polymerization (for the synthesis of the backbone) and atom transfer radical …
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The Hydrogel Reimagined: Gel-Derived Sponges and Sheets as Absorbents for Water, Blood, and Oil
Polymer hydrogels, i.e., crosslinked networks of polymer chains swollen in water, are well-studied materials. Superabsorbent polymer (SAP) gels that can absorb more than 100x their dry weight in water are widely used in personal hygiene products – but only in the form of microscale beads. If dry …
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Single-chain polymeric systems: design, synthesis, and applications
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-05-01
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Nanoparticle Biofunctionalization for Self-Assembly and Energy Transfer Applications
… This can be achieved through ligand exchange or polymer encapsulation procedures. This work takes advantage of both phase transfer routes to functionalize gold nanoparticles (AuNPs), quantum dots (QDs), and quantum rods (QRs) with DNA and proteins for self-assembly, energy transfer and drug …
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Synthesis and characterization of novel conjugated polymers and rod-coil block copolymers
A series of polyfluorene-based (PF) conjugated copolymers have been synthesized to improve the spectral stability, hole-injection properties and water processibility which are the major challenges for PF-type materials. The focus of this work has been to examine whether properties of conjugated …
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Surface modification of polymer membranes by self-organization
Water filtration processes employing polymer membranes have become increasingly important over the past forty years. Due to their high efficiency and modularity relative to conventional processes, membrane separations are among a suite of emerging water treatment technologies which will make …
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REACTIONS AND PROCESSES AT CELL-MIMICKING MEMBRANE SURFACES
… applications. Liposomes incorporating amphiphilic polymer poly(10, 12 pentacosadiynoic acid) (PDA) was used as a building block for investigations mimicking cellular reaction and processes at the membrane cell. Changes in local membrane micro-organization and packing as a result of …