jp505804d_si_001.pdf (436 kB)
Chromophore Ordering by Confinement into Carbon Nanotubes
journal contribution
posted on 2014-08-21, 00:00 authored by Y. Almadori, L. Alvarez, R. Le Parc, R. Aznar, F. Fossard, A. Loiseau, B. Jousselme, S. Campidelli, P. Hermet, A. Belhboub, A. Rahmani, T. Saito, J.-L. BantigniesWe 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.