Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13268
Título: | The 1,3-dipolar cycloaddition reaction in the functionalization of carbon nanofibers |
Autor(es): | Araújo, R. F. Fernandes, F. M. Braz Proença, M. Fernanda R. P. Silva, Carlos J. R. Paiva, M. C. |
Palavras-chave: | Carbon nanofibers Chemical functionalization Differential scanning calorimetry (DSC) Nuclear magnetic resonance spectroscopy (NMR) |
Data: | Out-2007 |
Editora: | American Scientific Publishers |
Revista: | Journal of Nanoscience and Nanotechnology |
Resumo(s): | Carbon nanofibers were functionalized using a reaction scheme described in the literature for 1,3- dipolar cycloaddition of azomethine ylides generated in situ by the condensation of an -amino acid and an aldehyde. The reagents used were Z-Gly-OH and paraformaldehyde. Their reaction with carbon nanofibers was studied as a solid mixture by controlled heating in the DSC. An oxazolidinone intermediate was formed as the major product. Z-Gly-OH and paraformaldehyde were also reacted with a model compound (anthracene) in DMF solution leading to the formation of a considerable amount of anthraquinone. These studies suggested that, under the conditions investigated, the 1,3- dipolar cycloaddition reaction was not favoured, and the main result of functionalization was the formation of quinone-type groups as a consequence of an oxidation process. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/13268 |
DOI: | 10.1166/jnn.2007.815 |
ISSN: | 1533-4880 1533-4899 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2.The 1,3-Dipolar Cycloaddition Reaction in the Functionalization of Carbon Nanofibers.pdf Acesso restrito! | 376,5 kB | Adobe PDF | Ver/Abrir |