Chemek, M., Massuyeau, F., Wery, J., Hlel, A., Ayachi, S., Faulques, E., Lefrant, S. & Alimi, K. (2012) Photoluminescence properties of new poly(N-vinylcarbazole)-3-methylthiophene (PVK-3MeT) graft copolymer. J. Appl. Polym. Sci. 125 126–132.
Added by: Laurent Cournède (2016-03-10 21:28:39) |
Type de référence: Article DOI: 10.1002/app.35074 Numéro d'identification (ISBN etc.): 0021-8995 Clé BibTeX: Chemek2012 Voir tous les détails bibliographiques |
Catégories: PMN Mots-clés: blending pvk, conjugated polymers, electroluminescent devices, enhancement, optical-properties, polythiophenes, PVK-3MeT graft copolymer, time resolved photoluminescence (TRPL), UV-Vis spectroscopy Créateurs: Alimi, Ayachi, Chemek, Faulques, Hlel, Lefrant, Massuyeau, Wery Collection: J. Appl. Polym. Sci. |
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Résumé |
Steady-state and time-resolved photoluminescence (TRPL) measurements are used in order to investigate the emission properties of new graft copolymer involving poly(N-vinylcarbazole) (PVK) and poly(3-methylthiophene) (PMeT) named PVK-3MeT. The photo-generated species in PVK-3MeT are identified as singlet intrachain excitons. Furthermore, radiative and nonradiative lifetimes have been calculated. The observed changes in the photo-physical properties of the different condensed phases could be directly related to the nanostructure of the material. The use of PVK in the chemical synthesis allows the obtaining of a new organic material with better emission and slowly radiative recombination compared to those of polythiophenes indicating that the radiative channel is more enhanced. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Added by: Laurent Cournède |