A Translucent Nanocomposite with Liquid Inclusions of a Responsive Nanoparticle Dispersion

Active nanocomposites are created with liquid inclusions that contain plasmonic gold nanoparticles inside a polymeric matrix. The alkylthiol‐coated gold particles are designed to reversible agglomerate at certain temperatures, which changes the plasmonic coupling and thus optical properties. It is f...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2018-10, Vol.30 (40), p.e1803159-n/a
Main Authors: Doblas, David, Hubertus, Jonas, Kister, Thomas, Kraus, Tobias
Format: Article
Language:English
Subjects:
active materials
colloidal dispersion
Gold
gold nanoparticles
Inclusions
Nanocomposites
Nanoparticles
Optical properties
self‐assembly
Temperature dependence
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Summary:Active nanocomposites are created with liquid inclusions that contain plasmonic gold nanoparticles inside a polymeric matrix. The alkylthiol‐coated gold particles are designed to reversible agglomerate at certain temperatures, which changes the plasmonic coupling and thus optical properties. It is found that particles confined to the liquid inclusions inside the active composite retain this capability and cause macroscopic, temperature‐dependent color change of the solid. The transition is fully reversible for at least 100 times and tunable in temperature via particle size and ligand. This method is suitable to “package” responsive dispersion in solid composites to exploit their dynamic properties in materials. Active nanocomposites are created with liquid inclusions that contain plasmonic gold nanoparticles inside a hydrogel matrix. The alkylthiol‐coated gold particles are designed to reversibly agglomerate at certain temperatures, which changes the plasmonic coupling and thus optical properties. The transition is fully reversible for at least 100 times and tunable in temperature via particle size and ligand.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201803159