AI Article Synopsis
- - A new method for labeling carbon nanotubes with (14)C is introduced, focusing on the carboxylic acid functions through an optimized decarbonylation reaction.
- - The labeling technique was successfully applied to multiwalled carbon nanotubes (MWNTs) and tested in rats to study their in vivo behavior.
- - Initial findings indicate the liver as the primary organ affected by the nanotubes, facilitating long-term tracking of their presence in organs using sensitive autoradiographic methods.
Article Abstract
A new method allowing the (14)C-labeling of carboxylic acid functions of carbon nanotubes is described. The key step of the labeling process is a decarbonylation reaction that has been developed and optimized with the help of a screening method. The optimized process has been successfully applied to multiwalled carbon nanotubes (MWNTs), and the corresponding (14)C-labeled nanotubes were used to investigate their in vivo behavior. Preliminary results obtained after i.v. contamination of rats revealed liver as the main target organ. Radiolabeling of NTs with a long-life radioactive nucleus like (14)C, coupled to a highly sensitive autoradiographic method, that provides a unique detection threshold, will make it possible to determine for a long time period whether or not NTs remain in any organs after animal exposure.
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