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Baltog, I., Baibarac, M., Smaranda, I., Matea, A., Ilie, M., Mevellec, J. Y. & Lefrant, S. (2016) Optical properties of single-walled carbon nanotubes functionalized with copolymer poly(3,4-ethylenedioxythiophene-co-pyrene). Opt. Mater. 62 604–611.
Added by: Richard Baschera (2017-02-02 13:56:04) Last edited by: Richard Baschera (2017-02-02 13:59:36) |
| Type de référence: Article DOI: 10.1016/j.optmat.2016.11.005 Numéro d'identification (ISBN etc.): 0925-3467 Clé BibTeX: Baltog2016 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, PMN Mots-clés: 2'-bithiophene-co-pyrene), carbon nanotubes, composite, Composites, devices, Fluorene, FUR spectroscopy, photoluminescence, Poly(2, polymers, pyrene units, Raman scattering, raman-scattering, solar-cells, spectroscopy Créateurs: Baibarac, Baltog, Ilie, Lefrant, Matea, Mevellec, Smaranda Collection: Opt. Mater. |
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| Résumé |
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Optical properties are reported for composites based on single-walled carbon nanotubes (SWNT5) and copolymer poly(3,4-ethylenedioxythiophene-co-pyrene) (PEDOT-Py) prepared by chemical polymerization of two monomers in the presence of carbon nanotubes. A charge transfer between SWNT5 and the PEDOT-Py copolymer was demonstrated by Raman scattering. The increase in the relative intensity of the Raman lines peaked at 440-577 cm(-1), which were assigned to the ethylenedioxy ring vibrational modes, indicated a significant hindrance steric in the case of the composites based on the PEDOT-Py copolymer and metallic SWNTs. The increase in the absorbance of IR band peaked at 984 cm(-1) occurred simultaneously with the disappearance of the IR band at 1639 cm(-1). This finding was a consequence of the formation of new covalent bonds between SWNTs and the thiophene and benzene rings of the repeating units of the PEDOT-Py copolymer. The photoluminescence (PL) quenching process of the PEDOT-Py copolymer was induced by semiconducting SWNTs. The PL quenching of PEDOT-Py copolymer in the presence of SWNT5 was. demonstrated based on the energy level diagrams of the two constituents of the PEDOT-Py/SWNTs composite material. (C) 2016 Elsevier B.V. All rights reserved.
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