Authors: Chakraborty, Sourav; Tarr, Matthew A.

Source: Canadian Journal of Chemistry, Volume 85, Number 2, February 2007 , pp. 153-156(4)

Publisher: NRC Research Press

Abstract:

A novel thioureido naphthalene derivative was synthesized and characterized. The compound proved itself as an effective fluoride sensor with respect to selectivity and sensitivity. In acetonitrile, the fluorescence intensity increased by 40-fold with the addition of 5 equiv. of fluoride. Fluorescence intensity did not substantially change with other halides, suggesting that the thioureido protons interact strongly with fluoride but not with other halides. The enhanced fluorescence is due to increased quantum efficiency of the fluoride complex.Key words: fluoride sensing, thioureido compound, fluorescence.

On a synthétisé et caractérisé un nouveau dérivé thiouréidonaphtalène. Le composé s'avère être efficace pour détecter l'ion fluorure tant par rapport à la sélectivité que qu'à la sensibilité. Dans l'acétonitrile, l'intensité de la fluorescence est multipliée par quarante lorsqu'on ajoute cinq équivalents de fluorure. L'intensité de la fluorescence ne subit pas de modification substantielle avec les autres halogénures, ce qui suggère que les protons thiouréido interagissent fortement avec l'ion fluorure mais pas avec les autres halogénures. L'augmentation de la fluorescence résulte d'une augmentation de l'efficacité quantique du complexe du fluorure.Mots-clés : détection de l'ion fluorure, composé thiouréido, fluorescence.[Traduit par la Rédaction]

Document Type: Research article

Publication date: 2007-02-01

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