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|Title:||Highly selective optical chemosensor for cyanide in aqueous medium|
|Author:||Rodrigues, João M. M.|
Farinha, Andreia A. S.
Tomé, Augusto C.
Cavaleiro, José A. S.
Tomé, João P. C.
|Abstract:||New cyanide selective chromogenic chemosensors based on metal-phthalocyanines containing four tosylamino groups were developed. These new receptors have high sensitivity for several anions (AcO−, F−, CN−, NO2−, H2PO4− and OH−) over other anions, such as: Br−, Cl−, NO3− and HSO4−. The experiments were conducted by UV–vis spectroscopy in DMSO and THF solutions. The selectivities were also checked in DMSO:water mixtures. In solutions containing water the highest selectivity was obtained for CN− anion. The host:guest complexes formed during the sensing event can be undo by acid treatment with a solution of trifluoroacetic acid without loss of the sensing ability of the chemosensors allowing their reuse.|
|Appears in Collections:||DQ - Artigos|
QOPNA - Artigos
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