Bajjou, O., Bakour, A., Khenfouch, M., Baitoul, M., Faulques, E. & Maaza, M. (2016) Structural and photophysical studies of few layers of reduced graphene oxide functionalized with Sn(IV) tetrakis (4-pyridyl)porphyrin dichloride. Synth. Met. 221 247–252.
Added by: Richard Baschera (2016-12-14 14:48:52) Last edited by: Richard Baschera (2016-12-14 15:58:22)
|Type de référence: Article
Numéro d'identification (ISBN etc.): 0379-6779
Clé BibTeX: Bajjou2016
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|Catégories: INTERNATIONAL, MIOPS
Mots-clés: Composites, derivatives, electron, energy-transfer, Exciton lifetime, fluorescence, morphology, nanocomposites, nanoparticles, photoluminescence, Porphyrin, Raman scattering, raman-spectroscopy, reduced graphene oxide, Transient photoluminescence, X-ray diffraction
Créateurs: Baitoul, Bajjou, Bakour, Faulques, Khenfouch, Maaza
Collection: Synth. Met.
Consultations : 2/707
Indice de consultation : 4%
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Reduced graphene oxide has attracted great interest owing to its exceptional properties, and its combination with Porphyrins has many potential applications in optoelectronics, light emitting diodes and dye-sensitized solar cells, because of the long excited-state lifetimes and delocalizable electron density on the porphyrin. Few layers of reduced graphene oxide (FRGO) were synthesized and functionalized with Sn(IV) tetrakis(4-pyridyl) porphyrin dichloride (SnTPyP2+). The structural and photophysical properties of the solution-cast thin films prepared from this composite were investigated by means of Scanning electron microscopy, X-ray diffraction, Raman scattering, FT-Infrared, UV vis absorption, steady state Photoluminescence (PL), and time resolved PL (TR-PL). The results showed strong interactions between these hybrids components and successful deposition of the porphyrin on the FRGO layers. Moreover, a steady state PL quenching of the SnTPyP2+-FRGO composite film indicated an important interaction suggesting a photoinduced electron transfer between SnTPyP2+. and FRGO. The TR-PL measurements of the photogenerated charges lifetimes showed major change for the SnTPyP2+ after its interaction with the FRGO, resulting in a decrease in the PL mean lifetime. (C) 2016 Published by Elsevier B.V.