Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/18014
Título: | Exploring the emissive properties of new azacrown compounds bearing aryl, furyl or thienyl moieties: a special case of chelation enhancement of fluorescence upon interaction with Ca2+, Cu2+ or Ni2+ |
Autor(es): | Oliveira, Elisabete Baptista, Rosa M. F. Costa, Susana P. G. Raposo, M. Manuela M. Lodeiro, Carlos |
Palavras-chave: | Fluorescent chemosensors Thiophene Furan Imidazole Azacrown ethers Sensors for Ca2+ Sensors for Cu2+ Sensors for Ni2+ Sensors for Hg2+ Synthesis |
Data: | 2010 |
Editora: | American Chemical Society |
Revista: | Inorganic Chemistry |
Resumo(s): | Three new compounds bearing furyl, aryl or thienyl moieties linked to an imidazo-crown ether system (1, 2 and 3) were synthesized and fully characterized by elemental analysis, infrared, absorption and emission spectroscopy, X-ray crystal diffraction, and MALDI-TOF-MS spectrometry. The interaction towards metal ions (Ca2+, Cu2+, Ni2+ and Hg2+) and F- has been explored in solution by absorption and fluorescence spectroscopy. Mononuclear and binuclear metal complexes using Cu2+ or Hg2+ as metal centers have been synthesized and characterized. Compounds 2 and 3 show a noticeable enhancement of the fluorescence intensity in the presence of Ca2+ and Cu2+ ions. Moreover compound 3 presents a dual sensory detection way by the modification of the fluorimetric and colorimetric properties in the presence of Cu2+ or Hg2+. The EPR studies in frozen solution and in microcrystalline state of the dinuclear Cu(II)2 complex revealed the presence of an unique Cu2+ type. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/18014 |
DOI: | 10.1021/ic101095y |
ISSN: | 0020-1669 |
Versão da editora: | http://pubs.acs.org/doi/pdfplus/10.1021/ic101095y |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
InorgChem 2010.pdf | Documento principal | 2,9 MB | Adobe PDF | Ver/Abrir |