Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/15117| Título: | (Oligo)thienyl-imidazo-benzocrown ether derivatives : synthesis, photophysical studies and evaluation of their chemosensory properties |
| Autor(es): | Batista, Rosa Maria Ferreira Oliveira, Elisabete Costa, Susana P. G. Lodeiro, Carlos Raposo, M. Manuela M. Ferreira, R. Cristina M. |
| Palavras-chave: | Benzo-15-crown-5 ether (oligo)thiophene Imidazole Fluorescent chemosensors Hg2+ Pd2+ CHEF effect Benzo-15-crown-5 ether (Oligo)thiophene |
| Data: | 2011 |
| Editora: | Elsevier |
| Revista: | Talanta |
| Resumo(s): | A series of novel (oligo)thienyl-imidazobenzocrown ethers were synthesised through a simple method and evaluated as fluorimetric chemosensors for transition metal cations. Interaction with Ni2+, Pd2+, and Hg2+ in ACN/DMSO solution (99:1) was studied by absorption and emission spectroscopy. Chemoselectivity studies in the presence of Na+ were also carried out and a fluorescence enhancement upon chelation (CHEF) effect was observed following Hg2+ complexation. Considering that most systems using fluorescence spectroscopy for detecting Hg2+ are based on the complexation enhancement of the fluorescence quenching (CHEQ) effect, the present work represents one of the few examples for sensing of Hg2+ based on a CHEF effect. |
| Tipo: | Artigo |
| URI: | https://hdl.handle.net/1822/15117 |
| DOI: | 10.1016/j.talanta.2011.07.107 |
| ISSN: | 0039-9140 |
| Versão da editora: | http://www.journals.elsevier.com/ |
| Arbitragem científica: | yes |
| Acesso: | Acesso aberto |
| Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| talanta manuscript.pdf | Documento principal | 1,54 MB | Adobe PDF | Ver/Abrir |
