Ratiometric Determination of Hg2+ Ions Based on Simple Molecular Motifs of Pyrene and Dioxaoctanediamide

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• 作者：Jun Soo Kim ; Myung Gil Choi ; Ki Cheol Song ; Kyoung Tai No ; Sangdoo Ahn ; Suk-Kyu Chang
• 刊名：Organic Letters
• 出版年：2007
• 出版时间：March 15, 2007
• 年：2007
• 卷：9
• 期：6
• 页码：1129 - 1132
• 全文大小：161K
• 年卷期：v.9,no.6(March 15, 2007)
• ISSN：1523-7052

文摘

A new podand-type dioxaoctanediamide-based chemosensor having two pyrene moieties was prepared, and its fluoroionophoric behaviorstoward transition-metal ions were investigated. Pyrene-appended dioxaoctanediamide 1 showed a selective fluorescence quenching towardHg²⁺ ions over other transition-metal ions in an aqueous methanol solution. Unique responses in pyrene monomer and excimer emissionsallowed selective ratiometric determination of Hg²⁺ ions in aqueous environments, and the detection limit was found to be 1.6 × 10^-6 M.