Here, we report novel dual-emissive gold nanoclusters (d-Au NCs) that have two distinctive emissions (420 and 630 nm) under a single wavelength excitation. The two-stage formation mechanism evidences their sensitive response to valine and trivalent chromium ions (Cr) in completely different spectral ratiometric modes in living cells with high contrast to successfully avoid signal fluctuations.
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| http://dx.doi.org/10.1039/d0cc03036h | DOI Listing |
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