5 results match your criteria brush terpolymers

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Self-Assembly of ABC Bottlebrush Triblock Terpolymers with Evidence for Looped Backbone Conformations.

Macromolecules 2018 ;51(18)

Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States.

Bottlebrush block copolymers offer rich opportunities for the design of complex hierarchical materials. As consequences of the densely grafted molecular architecture, bottlebrush polymers can adopt highly extended backbone conformations and exhibit unique physical properties. A recent report has described the unusual phase behavior of ABC bottlebrush triblock terpolymers bearing grafted poly(-lactide) (PLA), polystyrene (PS), and poly(ethylene oxide) (PEO) blocks (LSO). Read More

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January 2018

Tunable Pickering Emulsions with Environmentally Responsive Hairy Silica Nanoparticles.

ACS Appl Mater Interfaces 2016 Nov 17;8(47):32250-32258. Epub 2016 Nov 17.

Department of Chemistry, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong.

Surface modification of the nanoparticles using surface anchoring of amphiphilic polymers offers considerable scope for the design of a wide range of brush-coated hybrid nanoparticles with tunable surface wettability that may serve as new class of efficient Pickering emulsifiers. In the present study, we prepared mixed polymer brush-coated nanoparticles by grafting ABC miktoarm star terpolymers consisting of poly(ethylene glycol), polystyrene, and poly[(3-triisopropyloxysilyl)propyl methacrylate] (μ-PEG-b-PS-b-PIPSMA) on the surface of silica nanoparticles. The wettability of the as-prepared nanoparticles can be precisely tuned by a change of solvent or host-guest complexation. Read More

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November 2016

Directing self-assembly of nanoscopic cylindrical diblock brush terpolymers into films with desired spatial orientations: expansion of chemical composition scope.

Macromol Rapid Commun 2014 Feb 17;35(4):437-41. Epub 2013 Dec 17.

Departments of Chemistry and Chemical Engineering, Texas A&M University, College Station, Texas, 77842, USA.

Diblock brush terpolymers (DBTs) with different fluorinated methacrylate-based block segments are synthesized through sequential ring-opening metathesis polymerizations and are used to prepare polymer thin films with predictable film thicknesses. These DBTs exhibit preferable substrate vertical alignments within the films, induced by the relatively lower surface energy of the fluorinated structural components, together with the overall cylindrical morphology of the brush architecture. Read More

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February 2014

Nanoscopic cylindrical dual concentric and lengthwise block brush terpolymers as covalent preassembled high-resolution and high-sensitivity negative-tone photoresist materials.

J Am Chem Soc 2013 Mar 12;135(11):4203-6. Epub 2013 Mar 12.

Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA.

We describe a high-resolution, high-sensitivity negative-tone photoresist technique that relies on bottom-up preassembly of differential polymer components within cylindrical polymer brush architectures that are designed to align vertically on a substrate and allow for top-down single-molecule line-width imaging. By applying cylindrical diblock brush terpolymers (DBTs) with a high degree of control over the synthetic chemistry, we achieved large areas of vertical alignment of the polymers within thin films without the need for supramolecular assembly processes, as required for linear block copolymer lithography. The specially designed chemical compositions and tuned concentric and lengthwise dimensions of the DBTs enabled high-sensitivity electron-beam lithography of patterns with widths of only a few DBTs (sub-30 nm line-width resolution). Read More

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Self-assembly of poly(ethylene glycol)-poly(alkyl phosphonate) terpolymers on titanium oxide surfaces: synthesis, interface characterization, investigation of nonfouling properties, and long-term stability.

Langmuir 2010 Jan;26(1):74-82

Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland.

This contribution deals with the self-assembling of a terpolymer on titanium oxide (TiO(2)) surface. The polymer structure was obtained by polymerization of different methacrylates, i.e. Read More

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January 2010
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