Abstract
4-(4-Nitrobenzylideneamine)phenol was used in two strategies allowing the highly selective detection of F{sup -} and CN{sup -}. Firstly, the compound in acetonitrile acts as a chromogenic chemosensor based on the idea that more basic anions cause its deprotonation (colorless solution), generating a colored solution containing phenolate. The discrimination of CN{sup -} over F{sup -} was obtained by adding 1.4% water to acetonitrile: water preferentially solvates F{sup -}, leaving the CN{sup -} free to deprotonate the compound. Another strategy involved an assay comprised of the competition between phenolate dye and the analyte for calyx[4]pyrrole in acetonitrile, a receptor highly selective for F{sup -}. Phenolate and calyx[4]pyrrole form a hydrogen-bonded complex, which changes the color of the medium. On the addition of various anions, only F{sup -} was able to restore the original color corresponding to phenolate in solution due to the fact that the anion dislodges phenolate from the complexation site. (author)
Nicoleti, Celso R;
Marini, Vanderleia G;
Zimmermann, Lizandra M;
Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br
[1]
- Departamento de Quimica, Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil)
Citation Formats
Nicoleti, Celso R, Marini, Vanderleia G, Zimmermann, Lizandra M, and Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br.
Anionic chromogenic chemosensors highly selective for fluoride or cyanide based on 4-(4-Nitrobenzylideneamine)phenol.
Brazil: N. p.,
2012.
Web.
doi:10.1590/S0103-50532012005000007.
Nicoleti, Celso R, Marini, Vanderleia G, Zimmermann, Lizandra M, & Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br.
Anionic chromogenic chemosensors highly selective for fluoride or cyanide based on 4-(4-Nitrobenzylideneamine)phenol.
Brazil.
https://doi.org/10.1590/S0103-50532012005000007
Nicoleti, Celso R, Marini, Vanderleia G, Zimmermann, Lizandra M, and Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br.
2012.
"Anionic chromogenic chemosensors highly selective for fluoride or cyanide based on 4-(4-Nitrobenzylideneamine)phenol."
Brazil.
https://doi.org/10.1590/S0103-50532012005000007.
@misc{etde_22028861,
title = {Anionic chromogenic chemosensors highly selective for fluoride or cyanide based on 4-(4-Nitrobenzylideneamine)phenol}
author = {Nicoleti, Celso R, Marini, Vanderleia G, Zimmermann, Lizandra M, and Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br}
abstractNote = {4-(4-Nitrobenzylideneamine)phenol was used in two strategies allowing the highly selective detection of F{sup -} and CN{sup -}. Firstly, the compound in acetonitrile acts as a chromogenic chemosensor based on the idea that more basic anions cause its deprotonation (colorless solution), generating a colored solution containing phenolate. The discrimination of CN{sup -} over F{sup -} was obtained by adding 1.4% water to acetonitrile: water preferentially solvates F{sup -}, leaving the CN{sup -} free to deprotonate the compound. Another strategy involved an assay comprised of the competition between phenolate dye and the analyte for calyx[4]pyrrole in acetonitrile, a receptor highly selective for F{sup -}. Phenolate and calyx[4]pyrrole form a hydrogen-bonded complex, which changes the color of the medium. On the addition of various anions, only F{sup -} was able to restore the original color corresponding to phenolate in solution due to the fact that the anion dislodges phenolate from the complexation site. (author)}
doi = {10.1590/S0103-50532012005000007}
journal = []
issue = {8}
volume = {23}
journal type = {AC}
place = {Brazil}
year = {2012}
month = {Aug}
}
title = {Anionic chromogenic chemosensors highly selective for fluoride or cyanide based on 4-(4-Nitrobenzylideneamine)phenol}
author = {Nicoleti, Celso R, Marini, Vanderleia G, Zimmermann, Lizandra M, and Machado, Vanderlei G., E-mail: vanderlei.machado@ufsc.br}
abstractNote = {4-(4-Nitrobenzylideneamine)phenol was used in two strategies allowing the highly selective detection of F{sup -} and CN{sup -}. Firstly, the compound in acetonitrile acts as a chromogenic chemosensor based on the idea that more basic anions cause its deprotonation (colorless solution), generating a colored solution containing phenolate. The discrimination of CN{sup -} over F{sup -} was obtained by adding 1.4% water to acetonitrile: water preferentially solvates F{sup -}, leaving the CN{sup -} free to deprotonate the compound. Another strategy involved an assay comprised of the competition between phenolate dye and the analyte for calyx[4]pyrrole in acetonitrile, a receptor highly selective for F{sup -}. Phenolate and calyx[4]pyrrole form a hydrogen-bonded complex, which changes the color of the medium. On the addition of various anions, only F{sup -} was able to restore the original color corresponding to phenolate in solution due to the fact that the anion dislodges phenolate from the complexation site. (author)}
doi = {10.1590/S0103-50532012005000007}
journal = []
issue = {8}
volume = {23}
journal type = {AC}
place = {Brazil}
year = {2012}
month = {Aug}
}