Bis-triazole-appended azobenzene chromophore for selective sensing of copper(II) ion / Elango Hrishikesan in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8225-8229 Titre : Bis-triazole-appended azobenzene chromophore for selective sensing of copper(II) ion Type de document : texte imprimé Auteurs : Elango Hrishikesan, Auteur ; Chinnusamy Saravanan, Auteur ; Palaninathan Kannan, Auteur Année de publication : 2011 Article en page(s) : pp. 8225-8229 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Azobenzene chromophore sensing of copper ion Résumé : A Cu2+-specific colorimetric sensor of bis-triazole-appended azobenzene receptors I and II was designed and synthesized. Receptor II shows high selectivity toward Cu2+ in acetonitrile/water (80:20, v/v) solution based on the internal charge transfer (ICT) mechanism. The tridentate coordination behavior was proposed with 1:1 stoichiometry between receptor II and Cu2+. Herein, the Cu2+ gives rise to a large change in the absorption spectra (from red to pale yellow) that is clearly visible to the naked eye. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332147 [article] Bis-triazole-appended azobenzene chromophore for selective sensing of copper(II) ion [texte imprimé] / Elango Hrishikesan, Auteur ; Chinnusamy Saravanan, Auteur ; Palaninathan Kannan, Auteur . - 2011 . - pp. 8225-8229. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8225-8229 Mots-clés : Azobenzene chromophore sensing of copper ion Résumé : A Cu2+-specific colorimetric sensor of bis-triazole-appended azobenzene receptors I and II was designed and synthesized. Receptor II shows high selectivity toward Cu2+ in acetonitrile/water (80:20, v/v) solution based on the internal charge transfer (ICT) mechanism. The tridentate coordination behavior was proposed with 1:1 stoichiometry between receptor II and Cu2+. Herein, the Cu2+ gives rise to a large change in the absorption spectra (from red to pale yellow) that is clearly visible to the naked eye. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24332147

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