Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/57334
Título: | New fluoroionophores for metal cations based on benzo[d]oxazol-5-yl-alanine bearing pyrrole and imidazole |
Autor(es): | Esteves, Cátia Isabel Canavezes Ferreira, Rosa Cristina Moutinho Raposo, M. Manuela M. Costa, Susana P. G. |
Palavras-chave: | Benzoxazole Pyrrole Imidazole amino acids chemosensors Unnatural amino acids Fluorescent chemosensors |
Data: | 2018 |
Editora: | Elsevier 1 |
Revista: | Dyes and Pigments |
Citação: | C. I. C. Esteves, R. C. M. Ferreira, M. M. M. Raposo, S. P. G. Costa, “New fluoroionophores for metal cations based on benzo[d]oxazol-5-yl-alanine bearing pyrrole and imidazole”, Dyes and Pigments, 2018, 151, 211–218. |
Resumo(s): | Highly emissive heterocyclic alanines bearing a benzo[d]oxazolyl unit functionalised with pyrrole and imidazole at the side chain were synthesised and evaluated as fluorimetric chemosensors for different anions and metal cations. The results obtained by UV-Vis and fluorescence titrations as well as 1H NMR titrations indicate that there is a strong interaction through the donor N and O atoms at the side chain of the benzoxazolyl-alanines, with high selectivity towards Cu2+ and Pd2+ in a ligand-to-metal complex with 1:2 stoichiometry, and association constants were calculated for some ions. The photophysical and ion sensing properties of these unnatural amino acids suggest that they can be used to obtain bioinspired frameworks for metal ion recognition such as peptides/proteins with chemosensory/probing ability. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/57334 |
DOI: | 10.1016/j.dyepig.2017.12.040 |
ISSN: | 0143-7208 |
Versão da editora: | https://www.sciencedirect.com/science/article/abs/pii/S0143720817319940 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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manuscript.pdf Acesso restrito! | 1,49 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons