Understanding the Grafting of fluorescent molecules on double-walled carbon nanotubes.
In the fields of nanotoxicology and biomedical applications of carbon nanotubes (CNTs), it is often required to graft fluorophores on their surface in order to track them inside cells. For covalent grafting, the question of the competition between real grafting and simple adsorption is very relevant and has never been investigated rigorously. However, fundamental questions are raised as there is no simple evidence that a fluorophore adsorbed on a CNT will stay there forever once inside a cell (molecules with a stronger affinity could lead to desorption of the fluorophore), leading to wrong conclusions. These questions have already been investigated in a previous PhD Thesis using different techniques (Raman, IR, etc.) but none of them were able provide clear answers. On the contrary, in this PhD project the use of inelastic neutron scattering spectroscopy has already showed a strong ability to bring essential information that allowed us to have a better understanding of the grafting mechanisms. In order to go further and finally obtain the answers we aim, we need now to quantify precisely these mechanisms.
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LORNE Thomas; FLAHAUT Emmanuel; JIMENEZ RUIZ Monica and ROLS Stephane. (2016). Understanding the Grafting of fluorescent molecules on double-walled carbon nanotubes.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-05-461
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