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Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution

Christau, Stephanie ; Thurandt, Stefan ; Yenice, Zuleyha ; Klitzing, Regine von (2021)
Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution.
In: Polymers, 2014, 6 (7)
doi: 10.26083/tuprints-00019055
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution
Language: English
Date: 2021
Place of Publication: Darmstadt
Year of primary publication: 2014
Publisher: MDPI
Journal or Publication Title: Polymers
Volume of the journal: 6
Issue Number: 7
DOI: 10.26083/tuprints-00019055
Corresponding Links:
Origin: Secondary publication service
Abstract:

The effect of brush thickness on the loading of gold nanoparticles (AuNPs) within stimuli-responsive poly-(N,N-(dimethylamino ethyl) methacrylate) (PDMAEMA) polyelectrolyte brushes is reported. Atom transfer radical polymerization (ATRP) was used to grow polymer brushes via a “grafting from” approach. The brush thickness was tuned by varying the polymerization time. Using a new type of sealed reactor, thick brushes were synthesized. A systematic study was performed by varying a single parameter (brush thickness), while keeping all other parameters constant. AuNPs of 13 nm in diameter were attached by incubation. X-ray reflectivity, electron scanning microscopy and ellipsometry were used to study the particle loading, particle distribution and interpenetration of the particles within the brush matrix. A model for the structure of the brush/particle hybrids was derived. The particle number densities of attached AuNPs depend on the brush thickness, as do the optical properties of the hybrids. An increasing particle number density was found for increasing brush thickness, due to an increased surface roughness.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-190552
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 03 Sep 2021 12:59
Last Modified: 08 Aug 2023 09:09
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19055
PPN: 510415806
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