| Titre : |
Colorimetric detection of Mn(ii) based on a mixture of an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution |
| Type de document : |
texte imprimé |
| Auteurs : |
Yasumasa Fukushima, Auteur ; Shunichi Aikawa, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 450-456 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Capteurs chimiques
Colorants organiques
Colorimétrie
Mélanges (chimie)
Polyélectrolytes
Solutions aqueuses (chimie)
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
We have developed a simple and valuable method for the construction of a colorimetric chemosensor for detecting Mn(ii) in aqueous media. The chemosensor was prepared by mixing two commercial products, an anionic organic dye, 2‐(5‐nitro‐2‐pyridylazo)‐5‐(N‐propyl‐N‐sulphopropylamino)phenol (Nitro‐PAPS) and a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDADMAC). Upon gradual addition of Mn(ii) to the chemosensor, the absorption spectra showed a remarkable bathochromic shift concomitantly with a distinct colour change from yellow to blue‐green, while Nitro‐PAPS alone could not detect Mn(ii) in a colorimetric method. PDADMAC played a key role in sensing Mn(ii) for the mixture. The colour change might be due to the formation of the aggregate obtained through electrostatic interactions of a Nitro‐PAPS‐based Mn(ii) complex with PDADMAC. This investigation can inform the development of a new chemosensor by the combination of an anionic dye and a cationic polyelectrolyte. |
| DOI : |
https://doi.org/10.1111/cote.12489 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12489 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34488 |
in COLORATION TECHNOLOGY > Vol. 136, N° 5 (10/2020) . - p. 450-456
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Colorimetric detection of Mn(ii) based on a mixture of an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution in COLORATION TECHNOLOGY, Vol. 136, N° 5 (10/2020)
