Publikationen

Tailoring Photoluminescence Properties in Ionic Nanoparticle Networks

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

To investigate the original and promising luminescence properties of ionic nanoparticle networks (INN), various material compositions were investigated. In this work, the linker used to network the silica nanoparticles was varied; numerous substituted or non-substituted imidazolium, pyrazolium and pyridinium linkers are presented. Photoluminescence experiments on the INN hybrid materials revealed strong emission bands over a broad range in the visible region of the light spectrum. Varying the aromatic linker between the imidazolium units induced clear shifts of the emission maxima up to 100 nm, as a consequence of π–π stacking interactions. Steric hindrance and inductive effects of the substituents, introduced on the aromatic units, also strongly influenced the luminescence properties of the materials by modifying the π–π stacking between the imidazolium rings. Small and wide-angle X-ray scattering (SAXS, WAXS) experiments revealed a clear trend between the obtained structural parameters (short-range order parameter and distance of the aromatic units within the hybrid material) and the luminescence quantum yields of the INN materials.

Organisation(en)
Dynamik Kondensierter Systeme
Externe Organisation(en)
Technische Universität Wien, École Polytechnique
Journal
Chemistry: A European Journal
Band
20
Seiten
10763-10774
Anzahl der Seiten
12
ISSN
0947-6539
DOI
https://doi.org/10.1002/chem.201400392
Publikationsdatum
08-2014
Peer-reviewed
Ja
ÖFOS 2012
103015 Kondensierte Materie, 104003 Anorganische Chemie
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/tailoring-photoluminescence-properties-in-ionic-nanoparticle-networks(ddc8309d-9847-48f7-8de4-45faf53221d7).html