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  • Title: Ratiometric determination of Hg2+ ions based on simple molecular motifs of pyrene and dioxaoctanediamide.
    Author: Kim JS, Choi MG, Song KC, No KT, Ahn S, Chang SK.
    Journal: Org Lett; 2007 Mar 15; 9(6):1129-32. PubMed ID: 17309275.
    Abstract:
    A new podand-type dioxaoctanediamide-based chemosensor having two pyrene moieties was prepared, and its fluoroionophoric behaviors toward transition-metal ions were investigated. Pyrene-appended dioxaoctanediamide 1 showed a selective fluorescence quenching toward Hg2+ ions over other transition-metal ions in an aqueous methanol solution. Unique responses in pyrene monomer and excimer emissions allowed selective ratiometric determination of Hg2+ ions in aqueous environments, and the detection limit was found to be 1.6 x 10(-6) M. [structure: see text]
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