Figure 5.

FL response. Of the etched Au NCs (etching for 2 days) upon addition of Hg2+ ions ((a) 0 nM, (b) 1 nM, (c) 100 nM, (d) 10 μM, and (e) 1 mM); FL spectra (down) and photo of the samples taken under UV lamp (up).

Lian et al. Nanoscale Research Letters 2012 7:348   doi:10.1186/1556-276X-7-348
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