A Highly Sensitive and Selective Fluorescent Chemodosimeter for Hg2+ in Neutral Aqueous Solution |
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Authors: | Fang-Ying Wu Yong-Qiang Zhao Zhao-Jun Ji Yu-Mei Wu |
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Affiliation: | (1) Department of Chemistry, Nanchang University, Nanchang, 330031, China;(2) The Center of Analysis and Testing, Nanchang University, Nanchang, 330047, China |
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Abstract: | A fluorescent assay of Hg2+ in neutral aqueous solution was developed using N-[p-(dimethylamino)benzamido]-N′-phenylthiourea (1). 1’s fluorogenic chemodosimetric behaviors towards various metal ions were studied and a high sensitivity as well as selectivity was achieved for Hg2+. It was because of a strongly fluorescent 1,3,4-oxadiazoles which was produced by the Hg2+ promoted desulfurization reaction. The spectra of ESI mass and IR provided evidences for this reaction. According to fluorescence titration, a good linear relationship ranging from 1.0 × 10−7 to 2.0 × 10−5 mol l−1 was obtained with the limit of detection as 3.1 × 10−8 mol l−1. Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
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Keywords: | N-[p-(dimethylamino)benzamido]-N′ -phenylthiourea Chemodosimeter Fluorescence Mercury ion |
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