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Journal articles
Charge transfer in conjugated oligomers encapsulated into carbon nanotubes
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.
https://hal-cea.archives-ouvertes.fr/cea-00960689
Contributor : Serge Palacin Connect in order to contact the contributor
Submitted on : Tuesday, March 18, 2014 - 3:30:32 PM
Last modification on : Monday, October 11, 2021 - 1:23:47 PM
Contributor : Serge Palacin Connect in order to contact the contributor
Submitted on : Tuesday, March 18, 2014 - 3:30:32 PM
Last modification on : Monday, October 11, 2021 - 1:23:47 PM
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