Reversible microwave-assisted cycloaddition of aziridines to carbon nanotubes.
J Am Chem Soc
; 129(47): 14580-1, 2007 Nov 28.
Article
em En
| MEDLINE
| ID: mdl-17985916
ABSTRACT
We report a new approach that uses microwaves to rapidly functionalize carbon nanotubes by using 1,3-dipolar cycloaddition of aziridines, well-known precursors to azomethine ylides, in solvent-free conditions. The efficiency of our microwave-mediated protocol is confirmed by comparison to a similar protocol in classical conditions for the azomethine ylides in DMF. Under these latter conditions, the reaction proceeds in 5 days (against 1 h under microwave irradiation), and the functionalization degree is much lower, as confirmed by thermogravimetric analysis and Raman spectroscopy. With our procedure, we easily scale-up the reaction up to 250 mg of functionalized MWNT in 1 h. We also provide an indirect proof of the covalent sidewall functionalization of the tubes.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aziridinas
/
Nanotubos de Carbono
/
Micro-Ondas
Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Itália