Publikationen

Irreversible thermochromism in copper chloride Imidazolium Nanoparticle Networks

Autor(en)
Martin Kronstein, Konstantin Kriechbaum, Johanna Akbarzadeh, Herwig Peterlik, Marie-Alexandra Neouze
Abstrakt

In this work Imidazolium Nanoparticle Networks (INNs) with chloride counter-ions were used to complex copper dichloride. This complexation reaction leads to the formation of a green material. The properties of the copper INN material were compared to: first, copper imidazolium complexes, without the presence of silica nanoparticles, which are not thermochromic; second, chloride-containing INN material. The copper INN material showed irreversible thermochromic behaviour, with a clear colour change from green to yellow at 180 °C, which is due to a configuration change of the copper complex from planar to tetragonal. This structural change was studied using DSC and in situ SAXS measurements during heat treatment. The thermochromic material is stable under air up to 250 °C. This preliminary study opens the door of optical sensors for INN materials.

Organisation(en)
Dynamik Kondensierter Systeme, Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
Technische Universität Wien, French Atomic Energy Commission (CEA)
Journal
Physical Chemistry Chemical Physics - PCCP
Band
15
Seiten
12717-12723
Anzahl der Seiten
7
ISSN
1463-9076
DOI
https://doi.org/10.1039/c3cp50430a
Publikationsdatum
2013
Peer-reviewed
Ja
ÖFOS 2012
Kondensierte Materie, Materialchemie
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/irreversible-thermochromism-in-copper-chloride-imidazolium-nanoparticle-networks(5e89fcc4-45cc-45fc-b772-e17af1134725).html