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  • Title: A new selective colorimetric and fluorescent sensor for Hg(2+) and Cu(2+) based on a thiourea featuring a pyrene unit.
    Author: Lin WC, Wu CY, Liu ZH, Lin CY, Yen YP.
    Journal: Talanta; 2010 Jun 15; 81(4-5):1209-15. PubMed ID: 20441886.
    Abstract:
    A new artificial receptor 1 was developed, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated. Receptor 1 shows exclusively responses toward Hg(2+) and Cu(2+) ions. It selectively senses Hg(2+) and Cu(2+) ions through two different color changes in aqueous solution (DMSO/H(2)O=4/1) and also distinguishes them from other metal ions. In addition, receptor 1 also exhibits pronounced enhancements of the fluorescence, which can visually be discernible by an orchid fluorescence in the presence of Hg(2+) ions and a strong blue fluorescence in the presence of Cu(2+) ions.
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