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Influence of Single-Walled Carbon Nanotubes Enriched in Semiconducting and Metallic Tubes on the Vibrational and Photoluminescence Properties of Poly(para-phenylenevinylene)

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Lab. Optical Processes in Nanostructured Materials, National Institute of Materials Physics, P.O. Box MG-7, Bucharest R077125, Romania
Faculty of Physics, University of Bucharest, P.O. Box MG-1, 077125 Bucharest, Romania
§ Institut des Matériaux “Jean Rouxel” (UMR CNRS-Université de Nantes 6502), 2 rue de la Houssinière, B.P. 32229, F-44322 Nantes, France
*Tel: +40 21 3690170. Fax: + 40 21 3690177. E-mail: [email protected]
Cite this: J. Phys. Chem. C 2016, 120, 10, 5694–5705
Publication Date (Web):February 18, 2016
Copyright © 2016 American Chemical Society

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    Abstract Image

    A new synthesis method based on the electrochemical reduction of α,α,α′,α′-tetrabromo-p-xylene in the presence of single-walled carbon nanotubes (SWNTs) is used to obtain composites of carbon nanotubes (CNTs) functionalized with poly(para-phenylenevinylene) (PPV). To separate the effects of metallic and semiconducting CNTs on their interaction with PPV, the experiments are carried out with SWNTs enriched in semiconducting (S, 99%) and metallic (M, 98%) tubes. Significant changes in the relative intensity and shift of the radial breathing vibrational mode are reported in the Raman spectra of the as-prepared SWNTs samples, i.e., as mixtures of metallic (33%) and semiconducting (66%) entities and SWNTs enriched in M tubes (98%) that result from the electrofunctionalization with PPV. This different behavior originates in the noncovalent and covalent functionalization of SWNTs enriched in M and S SWNTs tubes with PPV, respectively. A gradual decrease in the absorption of the infrared (IR) bands of PPV situated in the spectral range of 750–1000 cm–1 as a result of the increase of the polymer weight on the blank Au support is reported. The electrofunctionalization of the as-prepared SWNTs induces position changes of the PPV IR absorption bands. In the presence of S-enriched SWNTs, a significant increase in the absorbance of the two IR bands peaked at 1452 and 1471 cm–1, which are assigned to the vibrational modes of the phenyl ring stretching and the quinoid structure of the PPV, respectively, is reported. This results from the covalent bonding of the PPV macromolecular chains onto the surface of the SWNTs enriched in S tubes. Our results also demonstrate that the photoluminescence quenching effect reported for the PPV/SWNTs composites is due to the metallic nanotubes.

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    Cited By

    This article is cited by 5 publications.

    1. Mirela Ilie, Daniela Dragoman, Mihaela Baibarac. Photoconductive Behavior of the PPV/RGO Composites: Insights of Charge Transfer Process. physica status solidi (b) 2019, 256 (7)
    2. Mihaela Baibarac, Adelina Matea, Monica Daescu, Ionel Mercioniu, Sophie Quillard, Jean-Yves Mevellec, Serge Lefrant. Polyaniline photoluminescence quenching induced by single-walled carbon nanotubes enriched in metallic and semiconducting tubes. Scientific Reports 2018, 8 (1)
    3. Mirela Ilie, Mihaela Baibarac. The spectrochemical behavior of composites based on poly (para-phenylenevinylene), reduced graphene oxide and pyrene. Optical Materials 2017, 72 , 140-146.
    4. M. Baibarac, A. Nila, I. Baltog, S. Lefrant, J.Y. Mevellec, S. Quillard, B. Humbert. Influence of single-walled carbon nanotubes enriched in semiconducting and metallic tubes on the electropolymerization of tetrabromo ortho-xylene: Insights on the synthesis mechanism of poly(ortho-phenylenevinylene). European Polymer Journal 2017, 88 , 109-125.
    5. M. Baibarac, M. Ilie, I. Baltog, S. Lefrant, B. Humbert. Infrared dichroism studies and anisotropic photoluminescence properties of poly(para-phenylene vinylene) functionalized reduced graphene oxide. RSC Advances 2017, 7 (12) , 6931-6942.

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