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Chromophore Ordering by Confinement into Carbon Nanotubes

Abstract : We report an experimental study on the confinement of oligothiophene derivatives into single-walled carbon nanotubes over a large range of diameter (from 0.68 to 1.93 nm). We evidence by means of Raman spectroscopy and transmission electron microscopy that the supramolecular organizations of the confined oligothiophenes depend on the nanocontainer size. The Raman Radial Breathing Mode frequency is shown to be monitored by both the number of confined molecules into a nanotube section and the competition between oligothiophene/oligothiophene and oligothiophene/tube wall interactions. We finally propose simple Raman criteria to characterize oligothiophene supramolecular organization at the nanoscale.
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Submitted on : Wednesday, October 29, 2014 - 11:55:15 AM
Last modification on : Friday, June 26, 2020 - 2:01:07 PM
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Y Almadori, L Alvarez, R Le Parc, R Aznar, F Fossard, et al.. Chromophore Ordering by Confinement into Carbon Nanotubes. Journal of Physical Chemistry C, American Chemical Society, 2014, 118, pp.19462 - 19468. ⟨10.1021/jp505804d⟩. ⟨hal-01078525⟩



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