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A novel probe design of a pyrene-disulfide molecular assembly has been proposed and its application for the fluorescence turn-on detection of mercury(II) ions (Hg2+) has been demonstrated. By taking advantage of the pyrene-assisted efficient photolysis of disulfide bonds, our proposed sensing system exhibits both high selectivity and sensitivity toward Hg2+ detection with a detection limit of 5 nM (1 ppb) (see figure).
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Yin et al. (2012) studied this question.
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