Results 211 to 220 of about 17,434 (258)

Organization of Nanoparticles in Polymer Brushes

Journal of the American Chemical Society, 2009
We have demonstrated a facile infiltration process, in which gold nanoparticles are assembled into block copolymer brushes. After solvent annealing, the polymer-covered nanoparticles are either sequestered into the corresponding block copolymer domain or expulsed from the brush, depending on the shell density of the nanoparticles.
Ron, Oren, Ziqi, Liang, Jonathan S, Barnard, Scott C, Warren, Ulrich, Wiesner, Wilhelm T S, Huck   +5 more
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Stretch transition in a polymer brush

Physical Review E, 1995
The behavior of a grafted chain of length K inside an otherwise monodispersed (of length N) polymer brush is investigated. For the case of K\ensuremath{\le}N, the stretching of the chain increases abruptly as K approaches N, analogous to the coil-stretch transition.
, Lai, , Chen
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Polymer brushes at curved surfaces

Macromolecules, 1993
The polymer adsorption theory of Scheutjens and Fleer is used to describe polymer brushes at spherical and cylindrical surfaces that are immersed in a low molecular weight solvent. The volume fraction profiles of such brushes is analyzed, special attention being paid to spherical brushes in athermal solvents. These are shown to generally consist of two
Wijmans, C.M., Zhulina, E.B.
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Self‐Oscillating Polymer Brushes

Angewandte Chemie, 2013
An autonomous functional surface has been designed by using self-oscillating polymers that convert the chemical energy of the Belousov-Zhabotinsky reaction into conformational changes of the polymer chains (see picture: red: hydrophobic/collapsed, green: hydrophilic/extended).
Tsukuru, Masuda, Mio, Hidaka, Yoko, Murase, Aya Mizutani, Akimoto, Kenichi, Nagase, Teruo, Okano, Ryo, Yoshida   +6 more
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Polymer Brushes: Promises and Challenges

Chemistry – An Asian Journal, 2013
AbstractSurface‐tethered polymers, or “polymer brushes”, are emerging as key elements in the context of regulating the surface characteristics of materials. Their properties, such as biocompatibility, antifouling, colloidal stability, wettability, and corrosion resistance, play a vital role in ascertaining their potential applications. The availability
Basit, Yameen, Aleeza, Farrukh
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Magnetic polymer microspheres with polymer brushes and the immobilization of protein on the brushes

Journal of Materials Chemistry, 2007
Precursor particles, monodisperse magnetic microspheres with diameter of 0.52 µm, were produced by deposition of Fe3O4 nanoparticles within crosslinked poly(acrylic acid) microspheres prepared by distillation–precipitation copolymerization. Subsequently, magnetic microspheres with atom transfer radical polymerization (ATRP) initiators were prepared by ...
Junsheng Huang, Baozhong Han, Wei Yue, Husheng Yan   +3 more
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Biomolecule-functionalized polymer brushes

Chemical Society Reviews, 2013
Functional polymer brushes have been utilized extensively for the immobilization of biomolecules, which is of crucial importance for the development of biosensors and biotechnology. Recent progress in polymerization methods, in particular surface-initiated atom transfer radical polymerization (ATRP), has provided a unique means for the design and ...
Hui, Jiang, Fu-Jian, Xu
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Protein-Functionalized Polymer Brushes

Biomacromolecules, 2005
A new strategy for the preparation of protein-functionalized polymer brushes is reported, which is based on a combination of surface-initiated atom transfer radical polymerization (ATRP), p-nitrophenyl chloroformate activation of the surface hydroxyl groups, and subsequent O(6)-benzylguanine (BG) functionalization.
Tugulu S, Arnold A, Sielaff I, Johnsson K, Klok HA   +4 more
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Initiation and Polymer Density of Conjugated Polymer Brushes

The Journal of Physical Chemistry B, 2020
The growth mechanism and polymer density in conjugated polymer brush (CPB) films composed of poly(3-methylthiophene) (P3MT) are characterized. X-ray photoelectron spectroscopy experiments show that the initiation of aryl halide monolayers by Pd(PtBu3)2 produces disproportionated monolayer initiators.
Ian A. VonWald, S. Gaither Frye, Mark M. Moog, Carrie L. Donley, Frank Tsui, Wei You   +5 more
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Sliding Friction with Polymer Brushes

Physical Review Letters, 2003
Using high-resolution shear force measurements, we examine in detail the frictional drag between rubbing surfaces bearing end-tethered polymeric surfactants (brushes). The drag attains a maximum on initial motion, attributed to elastic stretching of the chains, which falls by a cascade of relaxations to a value characteristic of kinetic friction.
Rafael, Tadmor, Joanna, Janik, Jacob, Klein, Lewis J, Fetters   +3 more
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