Controlling the kinetics of the non-covalent functionalization of carbon nanotubes using sub-cmc dilutions in a co-surfactant environment †

Geraud Delport; Lucile Orcin-Chaix; Stéphane Campidelli; Christophe Voisin; Jean-Sébastien Lauret

doi:10.1039/C6NR08942A

Controlling the kinetics of the non-covalent functionalization of carbon nanotubes using sub-cmc dilutions in a co-surfactant environment †

Geraud Delport ¹ Lucile Orcin-Chaix ^{1, 2} Stéphane Campidelli ² Christophe Voisin ³ Jean-Sébastien Lauret ¹

1 Laboratoire Aimé Cotton, CNRS, ENS Cachan

2 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences

NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)

3 LPA - Laboratoire Pierre Aigrain

Abstract : We investigate the origin of the slow kinetics of functionalization processes in micellar environments. We show that the ionic nature of the surfactants used to solubilize small molecules and nano-objects plays a central role in the slowness of the kinetics. In order to solve this issue, we have developed an innovative method that we apply to the hybrid compound porphyrin molecule/carbon nanotube. We use two ionic surfactants to solubilize the molecules and the nanotubes respectively. Passing the molecule suspension below the cmc allows circumventing the stability of the ionic surfactant while keeping the benefit of working with highly concentrated solutions. This method allows fine control of the functionalization reaction and tuning of the kinetics characteristic time over more than two orders of magnitude.

Type de document :

Article dans une revue

Nanoscale, Royal Society of Chemistry, 2017, 9, pp.2646-2651. 〈http://dx.doi.org/10.1039/C6NR08942A〉. 〈10.1039/C6NR08942A〉

Domaine :

Chimie / Matériaux

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https://hal-cea.archives-ouvertes.fr/cea-01470484
Contributeur : Serge Palacin <>
Soumis le : vendredi 17 février 2017 - 14:44:13
Dernière modification le : mardi 24 avril 2018 - 17:20:06

Controlling the kinetics of the non-covalent functionalization of carbon nanotubes using sub-cmc dilutions in a co-surfactant environment †

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Controlling the kinetics of the non-covalent functionalization of carbon nanotubes using sub-cmc dilutions in a co-surfactant environment †

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