Synthesis and evaluation of new thienyl and bithienyl-bis-indolylmethanes as colorimetric sensors for anions

The synthesis and full characterization of new bis-indolylmethanes containing thienyl and bithienyl moieties are reported. The sensor ability of the compounds in the presence of halide ions (F-, Cl-, Br- and I-), NO3-, ClO4-, SO42-, CN- and OH- ions was investigated in acetonitrile. The experimental...

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Detalhes bibliográficos
Autor principal: Batista, Rosa Maria Ferreira (author)
Outros Autores: Oliveira, M. Elisabete (author), Nuñez, Cristina (author), Costa, Susana P. G. (author), Lodeiro, Carlos (author), Raposo, M. Manuela M. (author)
Formato: article
Idioma:eng
Publicado em: 2009
Assuntos:
Synthesis
(Bi)thiophene
Bis-Indolylmethanes
Anion chemosensors
Heterocycles
colorimetric sensors
Science & Technology
Texto completo:http://hdl.handle.net/1822/10644
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/10644
Descrição
Resumo:The synthesis and full characterization of new bis-indolylmethanes containing thienyl and bithienyl moieties are reported. The sensor ability of the compounds in the presence of halide ions (F-, Cl-, Br- and I-), NO3-, ClO4-, SO42-, CN- and OH- ions was investigated in acetonitrile. The experimental results indicate that they could act as selective chromogenic-sensing molecules for the most basic anions F-, CN- and OH-, as a well-defined color change from yellow to pink was observed. The interaction constants between compounds 1 and 2 in the presence of F-, CN- and OH- were calculated and increased in the order OH- > F- > CN-.

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