Nanocomposites Based on Luminescent Colloidal Nanocrystals and Polymeric Ionic Liquids towards Optoelectronic Applications
by
Annamaria Panniello 1, Chiara Ingrosso 1, Paul Coupillaud 2, Michela Tamborra 1, Enrico Binetti 1,3, Maria Lucia Curri 1, Angela Agostiano 1,4, Daniel Taton 2 and 
Marinella Striccoli 1,*
Annamaria Panniello 1, Chiara Ingrosso 1, Paul Coupillaud 2, Michela Tamborra 1, Enrico Binetti 1,3, Maria Lucia Curri 1, Angela Agostiano 1,4, Daniel Taton 2 and Marinella Striccoli 1,*
1
Institute for Physical and Chemical Processes (IPCF), Bari Division, National Research Council C.N.R. c/o, Department of Chemistry, via Orabona 4, 70126 Bari, Italy
2
Laboratoire de Chimie des Polymères Organiques, Centre National de la Recherche Scientifique and Laboratoire de Chimie des Polymères Organiques, Université Bordeaux, Ecole Nationale Supérieure de Chimie de Biologie and de Physique, 16, Avenue Pey-Berland, 33607 Pessac Cedex, France
3
Now at Institute for Composite and Biomedical Materials, National Research Council, Via Sommarive, 14, 38123 Trento, Italy
4
Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
*
Author to whom correspondence should be addressed.
Materials 2014, 7(1), 591-610; https://doi.org/10.3390/ma7010591
Received: 29 November 2013 / Revised: 9 January 2014 / Accepted: 16 January 2014 / Published: 21 January 2014
(This article belongs to the Special Issue Nanocomposites of Polymers and Inorganic Particles 2013)
Polymeric ionic liquids (PILs) are an interesting class of polyelectrolytes, merging peculiar physical-chemical features of ionic liquids with the flexibility, mechanical stability and processability typical of polymers. The combination of PILs with colloidal semiconducting nanocrystals leads to novel nanocomposite materials with high potential for batteries and solar cells. We report the synthesis and properties of a hybrid nanocomposite made of colloidal luminescent CdSe nanocrystals incorporated in a novel ex situ synthesized imidazolium-based PIL, namely, either a poly(N-vinyl-3-butylimidazolium hexafluorophosphate) or a homologous PIL functionalized with a thiol end-group exhibiting a chemical affinity with the nanocrystal surface. A capping exchange procedure has been implemented for replacing the pristine organic capping molecules of the colloidal CdSe nanocrystals with inorganic chalcogenide ions, aiming to disperse the nano-objects in the PILs, by using a common polar solvent. The as-prepared nanocomposites have been studied by TEM investigation, UV-Vis, steady-state and time resolved photoluminescence spectroscopy for elucidating the effects of the PIL functionalization on the morphological and optical properties of the nanocomposites.
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Keywords:
colloidal nanocrystals; polymeric ionic liquids; nanocomposites; surface functionalization; time-resolved spectroscopy
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MDPI and ACS Style
Panniello, A.; Ingrosso, C.; Coupillaud, P.; Tamborra, M.; Binetti, E.; Curri, M.L.; Agostiano, A.; Taton, D.; Striccoli, M. Nanocomposites Based on Luminescent Colloidal Nanocrystals and Polymeric Ionic Liquids towards Optoelectronic Applications. Materials 2014, 7, 591-610.
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