Abstract
Novel colorimetric receptors for fluoride ion sensing containing anthraquinone as a chromogenic signaling unit and imidazo-2,2′-bithiophene binding sites are reported. Well-defined color change was observed upon addition of fluoride ions to acetonitrile solutions of receptors 2. Compounds 2a-c, deprotonated after fluoride ion addition, were studied as metal ion chemosensors in the presence of Zn(II), Hg(II), and Cu(II) in acetonitrile solutions, especially compound 2a which displayed a marked change from pink to yellow-gold colors upon complexation.
| Original language | English |
|---|---|
| Pages (from-to) | 3201-3204 |
| Number of pages | 4 |
| Journal | Organic Letters |
| Volume | 9 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 16 Aug 2007 |
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Batista, R. M. F., Oliveira, E., Costa, S. P. G., Lodeiro, C., & Raposo, M. M. M. (2007). Synthesis and ion sensing properties of new colorimetric and fluorimetric chemosensors based on bithienyl-imidazo-anthraquinone chromophores. Organic Letters, 9(17), 3201-3204. https://doi.org/10.1021/ol071029b