Use este identificador para citar ou linkar para este item:
http://www.repositorio.ufop.br/jspui/handle/123456789/4965
Título: | Preparation of polyaminopyridines using a CuI/L-Proline-Catalyzed C-N polycoupling reaction. |
Autor(es): | Reis, Lindomar A. Ligiéro, Carolina Bastos Pereira Andrade, Acácio Aparecido de Castro Taylor, Jason Guy Miranda, Paulo Cesar Muniz de Lacerda |
Palavras-chave: | Polyaminopyridines Ullmann coupling reaction End-group analysis by XRF |
Data do documento: | 2012 |
Referência: | REIS, L. A. et al. Preparation of polyaminopyridines using a CuI/L-Proline-Catalyzed C-N polycoupling reaction. Materials, Basel, v. 5, p. 2176-2189, 2012. Disponível em: <http://www.mdpi.com/1996-1944/5/11/2176>. Acesso em: 02 fev. 2015. |
Resumo: | Polyaminopyridines (PAPy) were chemically prepared from amino-bromopyridines by a CuI/L-proline-catalyzed C-N polycondensation reaction. The formation of the polymer was confirmed by GPC, XRD, XRF, FTIR, UV-vis (λmax = 400 nm), 1H and 13C NMR. The number-average molecular weights (Mn) were estimated by end-group analysis using X-ray fluorescence (up to 6000 Da). TGA analysis of PAPy with higher Mn showed greater thermal stability up to 170 oC. Viscosity measurements of polymer in formic acid at 30 oC indicated a polyelectrolyte nature of PAPy solutions. Furthermore, the amorphicity of the material was observed by X-ray diffraction analysis. |
URI: | http://www.repositorio.ufop.br/handle/123456789/4965 |
DOI: | https://doi.org/10.3390/ma5112176 |
ISSN: | 1996-1944 |
Licença: | O periódico Materials Science Journal permite o arquivamento da versão PDF do editor. Fonte: Sherpa/Romeo <http://www.sherpa.ac.uk/romeo/search.php?issn=1996-1944>. Acesso em: 03 jan. 2017. |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ARTIGO_PreparationPolyaminopyridineUsing.pdf | 289,09 kB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.