Skip to Main content Skip to Navigation
Journal articles

Investigation of the grafting of fluorophores onto double-walled carbon nanotubes: the influence of the geometry of the molecules

Abstract : The functionalization of nanoparticles is nowadays a standard procedure for many applications. Carbon nanotubes are no exception, and their functionalization has become an important part of the research effort these past decades. Nevertheless, there is still a lack of knowledge concerning the efficiency of the grafting processes, and more specifically concerning the question of the competition between covalent and non-covalent grafting when functionalized for example with aromatic fluorescent molecules. In a previous article, we investigated the grafting of fluorescein isothiocyanate onto double-walled carbon nanotubes. In order to explore the influence of the geometry of the fluorophore on the efficiency of the grafting processes, this work investigated the grafting of a streptocyanine onto the same carbon nanotubes using a combination of X-ray photoelectron spectroscopy, inelastic neutron scattering spectroscopy and computational simulations. The selected streptocyanine presents a very different geometry compared to FITC. Nevertheless, we show that, as in the case of FITC, both covalent and non-covalent grafting occurred simultaneously and that a comparable fraction of the fluorophore remained simply adsorbed onto the DWNTs despite thorough washings, indicating that the geometry of the streptocyanine did not exhibit the expected influence on the grafting process efficiency.
Document type :
Journal articles
Complete list of metadata

Cited literature [22 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01878747
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Friday, September 21, 2018 - 1:51:37 PM
Last modification on : Friday, March 12, 2021 - 1:32:08 PM
Long-term archiving on: : Saturday, December 22, 2018 - 4:16:17 PM

File

Lorne_20784.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Thomas Lorne, Mónica Jiménez-Ruiz, Stéphane Rols, Corinne Payrastre, Jean-Marc Escudier, et al.. Investigation of the grafting of fluorophores onto double-walled carbon nanotubes: the influence of the geometry of the molecules. Applied Surface Science, Elsevier, 2018, 457, pp.1181-1191. ⟨10.1016/j.apsusc.2018.06.303⟩. ⟨hal-01878747⟩

Share

Metrics

Record views

114

Files downloads

123