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Selective Signaling of Fluoride Anion Based on Imidazole Moieties

Selective Signaling of Fluoride Anion Based on Imidazole Moieties

Yuhui Zheng, Qianming Wang, Chaoliang Tan

Luminescence. Jul-Aug 2012;27(4):302-6.

PMID: 21915986

Abstract:

The imidazole ring unit in both 2-(2'-hydroxyphenyl)-benzimidazole (ligand a) and a europium(III) complex exhibited specific luminescent responses in the presence of fluoride anions. UV-visible and (1) H-nuclear magnetic resonance spectra showed that the NH bond of the imidazole ring can form a hydrogen bond with added fluoride anions. The detection limits are 5 × 10(-6) m for organic ligand and 1.0 × 10(-6) m for the europium complex respectively. The response times are less than 3 s. The europium complex exhibits a linear response in a concentration range lower than 1.0 × 10(-6) m (Y = -666.86X + 730.1).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13765258	Europium(III) fluoride		13765-25-8	Price

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