Publicação
Synthesis, characterization and spectroscopic studies of two new schiff-base bithienyl pendant-armed 15-crown-5 molecular probes
| Resumo: | Two new ligands provided with a 15-crown-5 as receptor unit and bithiophen unit as emissive probe have been synthesized and characterized in order to evaluate the coordination capabilities and their sensor effect. Ligand L1 presents an aromatic crown ether moiety directed linked to the imine-2,2´-bithiophene π–conjugated system and ligand L2 is constituted by an aliphatic crown ether moiety linked to the same imine-2,2´-bithiophene system through a methylene unit. Solid metal complexes of Ni(II), Pd(II), Hg(II) and Na(I) have been synthesized using both macrocyclic compounds, and have been studied in solution in the presence of the same metal ions. All solid compounds have been characterized by common analytical and spectroscopic techniques. The sensorial effect has been studied using absorption, emission and MALDI-TOF-MS spectroscopies. |
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| Autores principais: | Pedras, Bruno |
| Outros Autores: | Fernandes, Luz; Oliveira, Elisabete; Rodríguez, Laura; Raposo, M. Manuela M.; Capelo, José Luis; Lodeiro, Carlos |
| Assunto: | Synthesis Bithiophenes Schiff base Luminescence Nickel(II) Palladium(II) Mercury(II) Sodium(I) Chemosensor Fluorescent probes Bithiophene Crown ether |
| Ano: | 2009 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Two new ligands provided with a 15-crown-5 as receptor unit and bithiophen unit as emissive probe have been synthesized and characterized in order to evaluate the coordination capabilities and their sensor effect. Ligand L1 presents an aromatic crown ether moiety directed linked to the imine-2,2´-bithiophene π–conjugated system and ligand L2 is constituted by an aliphatic crown ether moiety linked to the same imine-2,2´-bithiophene system through a methylene unit. Solid metal complexes of Ni(II), Pd(II), Hg(II) and Na(I) have been synthesized using both macrocyclic compounds, and have been studied in solution in the presence of the same metal ions. All solid compounds have been characterized by common analytical and spectroscopic techniques. The sensorial effect has been studied using absorption, emission and MALDI-TOF-MS spectroscopies. |
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