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Showing 1 to 20 of 31 for “"atom transfer radical polymerization (ATRP)"”.
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Development of new dendritic ligands for copper mediated Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate
… been synthesized and used in copper mediated Atom Transfer Radical Polymerization (ATRP) of MMA. These ligands were derived from the commercially available Generation 1 polypropyleneimine dendrimer DAB-(NH2)4. The first set of ligands was synthesized by reacting DAB-(NH2)4 with aromatic …
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Thermally responsive polymers and their applications
… In a route to synthesis of the block copolymers, atom transfer radical polymerization (ATRP) and nitroxide-mediated radical polymerization (NMRP) of NIPA were developed. Incorporation of ATRP or NMRP initiators to the polymer ends of PPEs and the following polymerizations of NIPA were expected to …
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Branched Glycopolymers
… (AIGlc), were synthesized via atom transfer radical polymerization (ATRP). Self-condensing vinyl copolymerization (SCVCP) via ATRP was employed for the synthesis of highly branched glycoacrylates. The successful synthesis of linear and branched glycoacrylates were confirmed by …
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Smart hybrid materials with tailored functions
… (PNIPAM) Bürsten wurden mittels "Atom transfer radical polymerization" (ATRP) synthetisiert; die Beladung mit AuNPs erfolgte durch einen Inkubationsprozess. Beide Polymere weisen eine untere kritische Mischungstemperatur (LCST) auf, oberhalb derer die Polymerketten reversibles …
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Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
… relatively simple and rapid method which allows atom transfer radical polymerization (ATRP) in presence of air. In this study the structure, purity and thermally responsive behavior of grafted brushes have been characterized using X-ray photoelectron spectroscopy, time-of-flight secondary ion …
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Towards Early State Disease Detection in Microdevices: Fabrication and Testing of Micro Total Analysis Systems for Bioanalytical Applications
… and poly(ethylene glycol) (PEG) grafting using atom transfer radical polymerization (ATRP) have been used in PMMA microdevices. Proteins, peptides and protein digests have been separated electrophoretically in these PMMA microchips. My results demonstrate that PMMA microdevices should be well …
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Membrane Surface Engineering for Biochemical Applications
… (PVCL), from the surface of the membrane by atom transfer radical polymerization (ATRP). The nanostructure can vary its conformation and hydrophobicity when the temperature changes. After modification, membrane is able to provide a very high recovery and yield. </p> <p>Membrane modification …
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An evaluation and development of bonding technologies for rapid disassembly of automotive vehicles
… the issue of TEMs/adhesive compatibility, atom transfer radical polymerization (ATRP) with activators regenerated by electron transfer (ARGET) or ARGET ATRP technique was reviewed and employed to modify the TEMs surface. TEMs were grafted with poly(glycidyl methacrylate) (PGMA) chains which …
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CONTROLLED SYNTHESIS OF TOPOLOGICALLY TEMPLATED CATENANE AND KNOTTY POLYMER
… cyclization of linear analogue or ring-expansion polymerization from cyclic catalyst/initiator are also discussed. Chapter 2 demonstrates a novel route for the synthesis of polymer catenanes using supramolecularly templated Atom Transfer Radical Polymerization (ATRP) initiator for polymerization …
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Development of Core-Shell Polymeric Nanostructures for Delivery of Diagnostic and Chemotherapeutic Agents
… vivo model of intracellular infectious diseases. Atom transfer radical polymerization (ATRP) was utilized to prepare well-defined polymeric dispersion stabilizers that readily adsorb onto metal oxide surfaces. Two unimolecular bis(phosphonate) ATRP initiators were designed and prepared in good …
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Toward commercializable microphase-separating copolymer electrolytes for rechargeable lithium batteries
… problem, two approaches were adopted. In one, atom transfer radical polymerization (ATRP) was used to create the block copolymer, poly(oligo(oxyethylene) methacrylate)-b-poly(butyl methacrylate) [POEM-b-PBMA], which when doped with LiCF₃SO₃ (lithium triflate) exhibited good conductivity at room …
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Synthesis and Characterization of Complex Polymer Topologies using Ring-Opening Metathesis Polymerization
… conversion in the reversible-deactivation radical polymerization (RDRP) step. Moreover, performing ring-opening metathesis polymerization (ROMP) initiated by Grubbs 3rd generation catalyst (G3) on a norbornene functionalized macromolecules allows for creating polymers with bulky side …
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Solubilisation of organic compounds of different polarity by interpolyelectrolyte complexes based on copolymer micelles
… of polyanions was designed through the atom transfer radical polymerization (ATRP). IPEC of oppositely charged polydiallyldimethylammonium chloride (PDADMAC) and sodium polyacrylate (NaPA) were studied under variation of the Mw of PDADMAC. The effect of the hydrophobic modification of …
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Imidazole-Containing Polymerized Ionic Liquids for Emerging Applications: From Gene Delivery to Thermoplastic Elastomers
… alkyl groups and subsequent conventional free radical polymerization afforded a series of imidazolium-containing polyelectrolytes. Hydroxyl-containing homopolymers exhibited higher thermal stabilities and lower T<sub>g</sub>'s compared to the respective alkyl-analog. X-ray scattering …
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Hybrids Based on Layered Silicates
… Reversible Addition Fragmentation Chain Transfer (RAFT) copolymerization of DMAEMA and the initator-monomer 2-(2-bromoisobutyryloxy)ethyl methacrylate (BIEM). The copolymer was firmly anchored through multiple cationic charges distributed over the chain while the multiple initiating …
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Bioadhesion to model thermally responsive surfaces
… PNIPAAm brushes grown on a silicon substrate by atom-transfer radical polymerization (ATRP) were imaged by AFM and characterized by XPS. The height of the resulting brushes could be controlled from 5 to 55 nm by reaction time. A thermal response was observed for polymer brushes with a length …
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Reverse-selective gas-separation membranes prepared by atom transfer radical polymerization
… porous substrates via surface–initiated atom transfer radical polymerization (ATRP). PEO has an excellent CO<sub>2</sub> solubility, but crystallization of PEO chains leads to low CO<sub>2</sub> permeability and minimal CO<sub>2</sub>/H<sub>2</sub> selectivity. To prevent crystallization, …
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Template-Controlled Synthesis of Magnetic/Semiconducting Nanoparticles within Amphiphilic Core-Shell Cylindrical Polymer Brushes
… from” technique using a combination of anionic polymerization (for the synthesis of the backbone) and atom transfer radical polymerization (ATRP, for the synthesis of the side chains). The formation of well-defined brushes was confirmed by 1H-NMR and GPC. The selective hydrolysis of the PtBA …
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Amphiphilic Diblock Copolymers: Study of Interpolyelectrolyte Complexation in Organic Media and Nanoencapsulation of Melatonin
… block poly(acrylic acid) were synthesized via Atom Transfer Radical Polymerization (ATRP). All polymers were characterized using 1H NMR and gel permeation chromatography to confirm their structure, molecular weight distribution and to follow the conversion. Poly(2-(dimethylamino)ethyl …
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Synthesis and Characterization of Protein-Polymer Core-Shell Structures
… chapter five, we will discuss the atom transfer radical polymerization (ATRP) method to prepare the BNPs-polymer core-shell structures. The post-functionalization of apo-HSF can be realized by a CuAAC reaction, and an in situ ATRP reaction on the outer surface of apoferritin. These …
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