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

Externe Organisation(en)

Technische Universität Wien, French Alternative Energies and Atomic Energy Commission (CEA)

Journal

Physical Chemistry Chemical Physics

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

103015 Kondensierte Materie, 104011 Materialchemie

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5e89fcc4-45cc-45fc-b772-e17af1134725