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  • Title: BINOL-based fluorescent sensor for recognition of Cu(II) and sulfide anion in water.
    Author: Wang MQ, Li K, Hou JT, Wu MY, Huang Z, Yu XQ.
    Journal: J Org Chem; 2012 Sep 21; 77(18):8350-4. PubMed ID: 22909394.
    Abstract:
    A multifunctional fluorescent sensor based on a cyclen-appended BINOL derivative (R-1) was synthesized and characterized. It can display on-off-type fluorescence change with high selectivity toward Cu(II) among 19 metal ions in 100% aqueous solution. Furthermore, the in situ generated R-1-Cu(II) ensemble could recover the quenched fluorescence upon the addition of sulfide anion resulting in a off-on-type sensing with a detection limit of micromolar range in the same medium. No interference was observed from other biothiols and anions, including GSH, l-Cys, DTT, and sulfates, making it a highly sensitive and selective sulfide probe.
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