Thiourea based novel chromogenic sensor for selective detection of fluoride and cyanide anions in organic and aqueous media

Two new indole derivatives as anion receptors for detecting fluoride ion

“…In particular, great effort has been devoted to the recognition of the fluoride ion, because it is highly relevant to environmental and health issues [5][6][7][8][9][10][11][12][13][14]. Several successful examples have been reported [15][16][17][18][19][20], e.g., the receptors based on the chemical affinity between fluoride and silicon can exhibit high selectivity for F À [21][22][23], but the rational design of F À receptors with remarkable fluorescent or colorimetric response is still a great challenge.…”

Synthesis and spectroscopic characterization of urea/thiourea derivatives for potential optical sensors application

“…These compounds will be tested as chemosensors for metallic ions in solution and the results will be reported elsewhere. 5 …”

Indirect Voltammetric Sensing Platforms For Fluoride Detection on Boron-Doped Diamond Electrode Mediated via [FeF 6 ] 3− and [CeF 6 ] 2− Complexes Formation

“…Absorption spectra indicate complex formation between host molecule and the target analyte. The proposed methodology is fast and useful for environmental samples containing F À and CN À ions due to its low cost, simplicity allowing also colorimetrical in-situ analysis without instrument [28]. Another chemosensor based on fluoride complexation with Fe (III) was developed by Lu [29].…”