Fluorescence Signaling of Zr4+ by Hydrogen Peroxide Assisted Selective Desulfurization of Thioamide

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• 作者：Jiyoung Hwang ; Myung Gil Choi ; Suyoung Eor ; Suk-Kyu Chang
• 刊名：Inorganic Chemistry
• 出版年：2012
• 出版时间：February 6, 2012
• 年：2012
• 卷：51
• 期：3
• 页码：1634-1639
• 全文大小：347K
• 年卷期：v.51,no.3(February 6, 2012)
• ISSN：1520-510X

文摘

Thioamide derivative with a pyrene fluorophore was smoothly transformed to its corresponding amide by Zr⁴⁺ ions in the presence of hydrogen peroxide. The transformation was evidenced by ¹H NMR spectroscopy and the signaling was completed within 10 min after sample preparation. Interference from Ag⁺ and Hg²⁺ ions in Zr⁴⁺-selective fluorescence signaling was readily suppressed with the use of Sn²⁺ as a reducing additive. Discrimination of Zr⁴⁺ from closely related hafnium, which is a frequent contaminant in commercial zirconium, was not possible. Prominent Zr⁴⁺-selective turn-on type fluorescence signaling was possible with a detection limit of 4.6 脳 10^鈥? M in an aqueous 99% ethanol solution.