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Massuyeau, F., Duvail, J. L., Athalin, H., Lorcy, J. M., Lefrant, S., Wery, J. & Faulques, E. (2009) Elaboration of conjugated polymer nanowires and nanotubes for tunable photoluminescence properties. Nanotechnology, 20 155701.
Added by: Laurent Cournède (2016-03-10 21:41:24) |
| Type de référence: Article DOI: 10.1088/0957-4484/20/15/155701 Numéro d'identification (ISBN etc.): 0957-4484 Clé BibTeX: Massuyeau2009 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: aggregation, emission, light-emitting-diodes, Nanomaterials, optical-properties, poly(p-phenylene vinylene), poly(para-phenylene vinylene), ppv, spectroscopy, temperature Créateurs: Athalin, Duvail, Faulques, Lefrant, Lorcy, Massuyeau, Wery Collection: Nanotechnology |
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Prototypal photoluminescent nanofibres of poly-(p-phenylene-vinylene) (PPV) were prepared by the wetting template method in polycarbonate nanoporous membranes with an easy all-in solution polymer precursor route. Both nanowires and nanotubes were obtained by varying the dilution of the polymer precursor in methanol prior to thermal conversion. PPV nanotubes exhibit unique features, such as blue-shifted emission at 2.80 eV, higher quantum yield, and longer fluorescence lifetime with respect to PPV films. These effects are attributed to the cancellation of interchain interactions that are consistent with nanoscale tubular structures formed from weakly interacting and short polymer chain segments. The synthesis of these objects opens up perspectives for tunable photoluminescence properties in the blue spectral range and for biochemical applications.
Added by: Laurent Cournède |