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Journal Articles physica status solidi (b) Year : 2011

Charge transfer in conjugated oligomers encapsulated into carbon nanotubes

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Abstract

This study deals with a hybrid system consisting in quaterthiophene derivative encapsulated inside single-walled and multi-walled carbon nanotubes. Investigations of the encapsulation step are performed by transmission electron microscopy. Raman spectroscopy data point out different behaviors depending on the laser excitation energy with respect to the optical absorption of quaterthiophene. At low excitation energy (far from the oligomer resonance window) there is no significant modification of the Raman spectra before and after encapsulation. By contrast, at high excitation energy (close to the oligomer resonance window), Raman spectra exhibit a G-band shift together with an important RBM intensity loss, suggesting a significant charge transfer between the inserted molecule and the host nanotubes. Those results suggest a photo induced process leading to a significant charge transfer.

Dates and versions

cea-00960689 , version 1 (18-03-2014)

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Yann Almadori, Laurent Alvarez, Raul Arenal, Moulay-Rachid Babaa, Thierry Michel, et al.. Charge transfer in conjugated oligomers encapsulated into carbon nanotubes. physica status solidi (b), 2011, 148, pp.2560-2563. ⟨10.1002/pssb.201100094⟩. ⟨cea-00960689⟩
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